Resguardo inicial

2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
94853 changed files with 43200404 additions and 0 deletions
@@ -0,0 +1,232 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig ARCH_MXC
+	bool "Freescale i.MX family"
+	depends on ((ARCH_MULTI_V4T || ARCH_MULTI_V5) && CPU_LITTLE_ENDIAN) || \
+		ARCH_MULTI_V6_V7 || ARM_SINGLE_ARMV7M
+	select CLKSRC_IMX_GPT
+	select GENERIC_IRQ_CHIP
+	select GPIOLIB
+	select PINCTRL
+	select PM_OPP if PM
+	select SOC_BUS
+	select SRAM
+	help
+	  Support for Freescale MXC/iMX-based family of processors
+
+if ARCH_MXC
+
+config MXC_TZIC
+	bool
+
+config MXC_AVIC
+	bool
+
+config HAVE_IMX_ANATOP
+	bool
+
+config HAVE_IMX_GPC
+	bool
+	select PM_GENERIC_DOMAINS if PM
+
+config HAVE_IMX_MMDC
+	bool
+
+config HAVE_IMX_SRC
+	def_bool y if SMP
+	select ARCH_HAS_RESET_CONTROLLER
+
+if ARCH_MULTI_V6
+
+comment "ARM1136 platforms"
+
+config SOC_IMX31
+	bool "i.MX31 support"
+	select CPU_V6
+	select MXC_AVIC
+	help
+	  This enables support for Freescale i.MX31 processor
+
+config SOC_IMX35
+	bool "i.MX35 support"
+	select MXC_AVIC
+	help
+	  This enables support for Freescale i.MX35 processor
+
+endif
+
+if ARCH_MULTI_V4T
+
+config SOC_IMX1
+	bool "i.MX1 support"
+	select CPU_ARM920T
+	select MXC_AVIC
+	help
+	  This enables support for Freescale i.MX1 processor
+
+endif
+
+if ARCH_MULTI_V5
+
+config SOC_IMX25
+	bool "i.MX25 support"
+	select CPU_ARM926T
+	select MXC_AVIC
+	help
+	  This enables support for Freescale i.MX25 processor
+
+config SOC_IMX27
+	bool "i.MX27 support"
+	select CPU_ARM926T
+	select MXC_AVIC
+	help
+	  This enables support for Freescale i.MX27 processor
+
+endif
+
+if ARCH_MULTI_V7
+
+comment "Cortex-A platforms"
+
+config SOC_IMX5
+	bool
+	select HAVE_IMX_SRC
+	select MXC_TZIC
+
+config SOC_IMX50
+	bool "i.MX50 support"
+	select SOC_IMX5
+
+	help
+	  This enables support for Freescale i.MX50 processor.
+
+config SOC_IMX51
+	bool "i.MX51 support"
+	select SOC_IMX5
+	help
+	  This enables support for Freescale i.MX51 processor
+
+config SOC_IMX53
+	bool "i.MX53 support"
+	select SOC_IMX5
+
+	help
+	  This enables support for Freescale i.MX53 processor.
+
+config SOC_IMX6
+	bool
+	select ARM_CPU_SUSPEND if (PM || CPU_IDLE)
+	select ARM_GIC
+	select HAVE_IMX_ANATOP
+	select HAVE_IMX_GPC
+	select HAVE_IMX_MMDC
+	select HAVE_IMX_SRC
+	select MFD_SYSCON
+	select PL310_ERRATA_769419 if CACHE_L2X0
+
+config SOC_IMX6Q
+	bool "i.MX6 Quad/DualLite support"
+	select ARM_ERRATA_764369 if SMP
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_775420
+	select HAVE_ARM_SCU if SMP
+	select HAVE_ARM_TWD
+	select SOC_IMX6
+
+	help
+	  This enables support for Freescale i.MX6 Quad processor.
+
+config SOC_IMX6SL
+	bool "i.MX6 SoloLite support"
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_775420
+	select SOC_IMX6
+
+	help
+	  This enables support for Freescale i.MX6 SoloLite processor.
+
+config SOC_IMX6SLL
+	bool "i.MX6 SoloLiteLite support"
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_775420
+	select SOC_IMX6
+
+	help
+	  This enables support for Freescale i.MX6 SoloLiteLite processor.
+
+config SOC_IMX6SX
+	bool "i.MX6 SoloX support"
+	select ARM_ERRATA_754322
+	select ARM_ERRATA_775420
+	select SOC_IMX6
+
+	help
+	  This enables support for Freescale i.MX6 SoloX processor.
+
+config SOC_IMX6UL
+	bool "i.MX6 UltraLite support"
+	select SOC_IMX6
+	select ARM_ERRATA_814220
+
+	help
+	  This enables support for Freescale i.MX6 UltraLite processor.
+
+config SOC_LS1021A
+	bool "Freescale LS1021A support"
+	select ARM_GIC
+	select HAVE_ARM_ARCH_TIMER
+	select ZONE_DMA if ARM_LPAE
+	help
+	  This enables support for Freescale LS1021A processor.
+
+endif
+
+if ARCH_MULTI_V7 || ARM_SINGLE_ARMV7M
+
+comment "Cortex-A/Cortex-M asymmetric multiprocessing platforms"
+
+config SOC_IMX7D_CA7
+	bool
+	select ARM_GIC
+	select HAVE_ARM_ARCH_TIMER
+	select HAVE_IMX_ANATOP
+	select HAVE_IMX_MMDC
+	select HAVE_IMX_SRC
+	select IMX_GPCV2
+
+config SOC_IMX7D_CM4
+	bool
+	select ARMV7M_SYSTICK
+
+config SOC_IMX7D
+	bool "i.MX7 Dual support"
+	select SOC_IMX7D_CA7 if ARCH_MULTI_V7
+	select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
+	select ARM_ERRATA_814220 if ARCH_MULTI_V7
+	help
+	  This enables support for Freescale i.MX7 Dual processor.
+
+config SOC_IMX7ULP
+	bool "i.MX7ULP support"
+	select CLKSRC_IMX_TPM
+	select SOC_IMX7D_CA7 if ARCH_MULTI_V7
+	select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
+	help
+	  This enables support for Freescale i.MX7 Ultra Low Power processor.
+
+config SOC_IMXRT
+	bool "i.MXRT support"
+	depends on ARM_SINGLE_ARMV7M
+	select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
+	help
+	  This enables support for Freescale i.MXRT Crossover processor.
+
+config SOC_VF610
+	bool "Vybrid Family VF610 support"
+	select ARM_GIC if ARCH_MULTI_V7
+
+	help
+	  This enables support for Freescale Vybrid VF610 processor.
+
+endif
+
+endif
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-y := cpu.o system.o irq-common.o
+
+obj-$(CONFIG_SOC_IMX25) += cpu-imx25.o mach-imx25.o pm-imx25.o
+
+obj-$(CONFIG_SOC_IMX27) += cpu-imx27.o pm-imx27.o mach-imx27.o
+
+obj-$(CONFIG_SOC_IMX31) += mm-imx3.o cpu-imx31.o mach-imx31.o
+obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o mach-imx35.o
+
+imx5-pm-$(CONFIG_PM) += pm-imx5.o
+obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o $(imx5-pm-y)
+
+obj-$(CONFIG_MXC_TZIC) += tzic.o
+obj-$(CONFIG_MXC_AVIC) += avic.o
+
+ifeq ($(CONFIG_CPU_IDLE),y)
+obj-$(CONFIG_SOC_IMX5) += cpuidle-imx5.o
+obj-$(CONFIG_SOC_IMX6Q) += cpuidle-imx6q.o
+obj-$(CONFIG_SOC_IMX6SL) += cpuidle-imx6sl.o
+obj-$(CONFIG_SOC_IMX6SLL) += cpuidle-imx6sx.o
+obj-$(CONFIG_SOC_IMX6SX) += cpuidle-imx6sx.o
+obj-$(CONFIG_SOC_IMX6UL) += cpuidle-imx6sx.o
+obj-$(CONFIG_SOC_IMX7ULP) += cpuidle-imx7ulp.o
+endif
+
+ifdef CONFIG_SND_SOC_IMX_PCM_FIQ
+obj-y += ssi-fiq.o
+obj-y += ssi-fiq-ksym.o
+endif
+
+obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
+obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
+obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
+obj-$(CONFIG_HAVE_IMX_SRC) += src.o
+ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_IMX7D_CA7)$(CONFIG_SOC_LS1021A),)
+obj-$(CONFIG_SMP) += headsmp.o platsmp.o
+obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
+endif
+obj-$(CONFIG_SOC_IMX6Q) += mach-imx6q.o
+obj-$(CONFIG_SOC_IMX6SL) += mach-imx6sl.o
+obj-$(CONFIG_SOC_IMX6SLL) += mach-imx6sl.o
+obj-$(CONFIG_SOC_IMX6SX) += mach-imx6sx.o
+obj-$(CONFIG_SOC_IMX6UL) += mach-imx6ul.o
+obj-$(CONFIG_SOC_IMX7D_CA7) += mach-imx7d.o
+obj-$(CONFIG_SOC_IMX7D_CM4) += mach-imx7d-cm4.o
+obj-$(CONFIG_SOC_IMX7ULP) += mach-imx7ulp.o pm-imx7ulp.o
+
+ifeq ($(CONFIG_SUSPEND),y)
+obj-$(CONFIG_SOC_IMX6) += suspend-imx6.o
+obj-$(CONFIG_SOC_IMX53) += suspend-imx53.o
+endif
+ifeq ($(CONFIG_ARM_CPU_SUSPEND),y)
+obj-$(CONFIG_SOC_IMX6) += resume-imx6.o
+endif
+obj-$(CONFIG_SOC_IMX6) += pm-imx6.o
+
+obj-$(CONFIG_SOC_IMX1) += mach-imx1.o
+obj-$(CONFIG_SOC_IMX50) += mach-imx50.o
+obj-$(CONFIG_SOC_IMX51) += mach-imx51.o
+obj-$(CONFIG_SOC_IMX53) += mach-imx53.o
+
+obj-$(CONFIG_SOC_IMXRT) += mach-imxrt.o
+
+obj-$(CONFIG_SOC_VF610) += mach-vf610.o
+
+obj-$(CONFIG_SOC_LS1021A) += mach-ls1021a.o
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2013-2015 Freescale Semiconductor, Inc.
+ * Copyright 2017-2018 NXP.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include "common.h"
+#include "hardware.h"
+
+#define REG_SET		0x4
+#define REG_CLR		0x8
+
+#define ANADIG_REG_2P5		0x130
+#define ANADIG_REG_CORE		0x140
+#define ANADIG_ANA_MISC0	0x150
+#define ANADIG_DIGPROG		0x260
+#define ANADIG_DIGPROG_IMX6SL	0x280
+#define ANADIG_DIGPROG_IMX7D	0x800
+
+#define SRC_SBMR2		0x1c
+
+#define BM_ANADIG_REG_2P5_ENABLE_WEAK_LINREG	0x40000
+#define BM_ANADIG_REG_2P5_ENABLE_PULLDOWN	0x8
+#define BM_ANADIG_REG_CORE_FET_ODRIVE		0x20000000
+#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG	0x1000
+/* Below MISC0_DISCON_HIGH_SNVS is only for i.MX6SL */
+#define BM_ANADIG_ANA_MISC0_DISCON_HIGH_SNVS	0x2000
+
+static struct regmap *anatop;
+
+static void imx_anatop_enable_weak2p5(bool enable)
+{
+	u32 reg, val;
+
+	regmap_read(anatop, ANADIG_ANA_MISC0, &val);
+
+	/* can only be enabled when stop_mode_config is clear. */
+	reg = ANADIG_REG_2P5;
+	reg += (enable && (val & BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG) == 0) ?
+		REG_SET : REG_CLR;
+	regmap_write(anatop, reg, BM_ANADIG_REG_2P5_ENABLE_WEAK_LINREG);
+}
+
+static void imx_anatop_enable_fet_odrive(bool enable)
+{
+	regmap_write(anatop, ANADIG_REG_CORE + (enable ? REG_SET : REG_CLR),
+		BM_ANADIG_REG_CORE_FET_ODRIVE);
+}
+
+static inline void imx_anatop_enable_2p5_pulldown(bool enable)
+{
+	regmap_write(anatop, ANADIG_REG_2P5 + (enable ? REG_SET : REG_CLR),
+		BM_ANADIG_REG_2P5_ENABLE_PULLDOWN);
+}
+
+static inline void imx_anatop_disconnect_high_snvs(bool enable)
+{
+	regmap_write(anatop, ANADIG_ANA_MISC0 + (enable ? REG_SET : REG_CLR),
+		BM_ANADIG_ANA_MISC0_DISCON_HIGH_SNVS);
+}
+
+void imx_anatop_pre_suspend(void)
+{
+	if (imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2)
+		imx_anatop_enable_2p5_pulldown(true);
+	else
+		imx_anatop_enable_weak2p5(true);
+
+	imx_anatop_enable_fet_odrive(true);
+
+	if (cpu_is_imx6sl())
+		imx_anatop_disconnect_high_snvs(true);
+}
+
+void imx_anatop_post_resume(void)
+{
+	if (imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2)
+		imx_anatop_enable_2p5_pulldown(false);
+	else
+		imx_anatop_enable_weak2p5(false);
+
+	imx_anatop_enable_fet_odrive(false);
+
+	if (cpu_is_imx6sl())
+		imx_anatop_disconnect_high_snvs(false);
+}
+
+void __init imx_init_revision_from_anatop(void)
+{
+	struct device_node *np, *src_np;
+	void __iomem *anatop_base;
+	unsigned int revision;
+	u32 digprog;
+	u16 offset = ANADIG_DIGPROG;
+	u8 major_part, minor_part;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
+	anatop_base = of_iomap(np, 0);
+	WARN_ON(!anatop_base);
+	if (of_device_is_compatible(np, "fsl,imx6sl-anatop"))
+		offset = ANADIG_DIGPROG_IMX6SL;
+	if (of_device_is_compatible(np, "fsl,imx7d-anatop"))
+		offset = ANADIG_DIGPROG_IMX7D;
+	digprog = readl_relaxed(anatop_base + offset);
+	iounmap(anatop_base);
+
+	/*
+	 * On i.MX7D digprog value match linux version format, so
+	 * it needn't map again and we can use register value directly.
+	 */
+	if (of_device_is_compatible(np, "fsl,imx7d-anatop")) {
+		revision = digprog & 0xff;
+	} else {
+		/*
+		 * MAJOR: [15:8], the major silicon revison;
+		 * MINOR: [7: 0], the minor silicon revison;
+		 *
+		 * please refer to the i.MX RM for the detailed
+		 * silicon revison bit define.
+		 * format the major part and minor part to match the
+		 * linux kernel soc version format.
+		 */
+		major_part = (digprog >> 8) & 0xf;
+		minor_part = digprog & 0xf;
+		revision = ((major_part + 1) << 4) | minor_part;
+
+		if ((digprog >> 16) == MXC_CPU_IMX6ULL) {
+			void __iomem *src_base;
+			u32 sbmr2;
+
+			src_np = of_find_compatible_node(NULL, NULL,
+						     "fsl,imx6ul-src");
+			src_base = of_iomap(src_np, 0);
+			of_node_put(src_np);
+			WARN_ON(!src_base);
+			sbmr2 = readl_relaxed(src_base + SRC_SBMR2);
+			iounmap(src_base);
+
+			/* src_sbmr2 bit 6 is to identify if it is i.MX6ULZ */
+			if (sbmr2 & (1 << 6)) {
+				digprog &= ~(0xff << 16);
+				digprog |= (MXC_CPU_IMX6ULZ << 16);
+			}
+		}
+	}
+	of_node_put(np);
+
+	mxc_set_cpu_type(digprog >> 16 & 0xff);
+	imx_set_soc_revision(revision);
+}
+
+void __init imx_anatop_init(void)
+{
+	anatop = syscon_regmap_lookup_by_compatible("fsl,imx6q-anatop");
+	if (IS_ERR(anatop))
+		pr_err("%s: failed to find imx6q-anatop regmap!\n", __func__);
+}
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ */
+
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/irqchip.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <asm/mach/irq.h>
+#include <asm/exception.h>
+
+#include "common.h"
+#include "hardware.h"
+#include "irq-common.h"
+
+#define AVIC_INTCNTL		0x00	/* int control reg */
+#define AVIC_NIMASK		0x04	/* int mask reg */
+#define AVIC_INTENNUM		0x08	/* int enable number reg */
+#define AVIC_INTDISNUM		0x0C	/* int disable number reg */
+#define AVIC_INTENABLEH		0x10	/* int enable reg high */
+#define AVIC_INTENABLEL		0x14	/* int enable reg low */
+#define AVIC_INTTYPEH		0x18	/* int type reg high */
+#define AVIC_INTTYPEL		0x1C	/* int type reg low */
+#define AVIC_NIPRIORITY(x)	(0x20 + 4 * (7 - (x))) /* int priority */
+#define AVIC_NIVECSR		0x40	/* norm int vector/status */
+#define AVIC_FIVECSR		0x44	/* fast int vector/status */
+#define AVIC_INTSRCH		0x48	/* int source reg high */
+#define AVIC_INTSRCL		0x4C	/* int source reg low */
+#define AVIC_INTFRCH		0x50	/* int force reg high */
+#define AVIC_INTFRCL		0x54	/* int force reg low */
+#define AVIC_NIPNDH		0x58	/* norm int pending high */
+#define AVIC_NIPNDL		0x5C	/* norm int pending low */
+#define AVIC_FIPNDH		0x60	/* fast int pending high */
+#define AVIC_FIPNDL		0x64	/* fast int pending low */
+
+#define AVIC_NUM_IRQS 64
+
+/* low power interrupt mask registers */
+#define MX25_CCM_LPIMR0	0x68
+#define MX25_CCM_LPIMR1	0x6C
+
+static void __iomem *avic_base;
+static void __iomem *mx25_ccm_base;
+static struct irq_domain *domain;
+
+#ifdef CONFIG_FIQ
+static int avic_set_irq_fiq(unsigned int hwirq, unsigned int type)
+{
+	unsigned int irqt;
+
+	if (hwirq >= AVIC_NUM_IRQS)
+		return -EINVAL;
+
+	if (hwirq < AVIC_NUM_IRQS / 2) {
+		irqt = imx_readl(avic_base + AVIC_INTTYPEL) & ~(1 << hwirq);
+		imx_writel(irqt | (!!type << hwirq), avic_base + AVIC_INTTYPEL);
+	} else {
+		hwirq -= AVIC_NUM_IRQS / 2;
+		irqt = imx_readl(avic_base + AVIC_INTTYPEH) & ~(1 << hwirq);
+		imx_writel(irqt | (!!type << hwirq), avic_base + AVIC_INTTYPEH);
+	}
+
+	return 0;
+}
+#endif /* CONFIG_FIQ */
+
+
+static struct mxc_extra_irq avic_extra_irq = {
+#ifdef CONFIG_FIQ
+	.set_irq_fiq = avic_set_irq_fiq,
+#endif
+};
+
+#ifdef CONFIG_PM
+static u32 avic_saved_mask_reg[2];
+
+static void avic_irq_suspend(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = gc->chip_types;
+	int idx = d->hwirq >> 5;
+
+	avic_saved_mask_reg[idx] = imx_readl(avic_base + ct->regs.mask);
+	imx_writel(gc->wake_active, avic_base + ct->regs.mask);
+
+	if (mx25_ccm_base) {
+		u8 offs = d->hwirq < AVIC_NUM_IRQS / 2 ?
+			MX25_CCM_LPIMR0 : MX25_CCM_LPIMR1;
+		/*
+		 * The interrupts which are still enabled will be used as wakeup
+		 * sources. Allow those interrupts in low-power mode.
+		 * The LPIMR registers use 0 to allow an interrupt, the AVIC
+		 * registers use 1.
+		 */
+		imx_writel(~gc->wake_active, mx25_ccm_base + offs);
+	}
+}
+
+static void avic_irq_resume(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = gc->chip_types;
+	int idx = d->hwirq >> 5;
+
+	imx_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask);
+
+	if (mx25_ccm_base) {
+		u8 offs = d->hwirq < AVIC_NUM_IRQS / 2 ?
+			MX25_CCM_LPIMR0 : MX25_CCM_LPIMR1;
+
+		imx_writel(0xffffffff, mx25_ccm_base + offs);
+	}
+}
+
+#else
+#define avic_irq_suspend NULL
+#define avic_irq_resume NULL
+#endif
+
+static __init void avic_init_gc(int idx, unsigned int irq_start)
+{
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
+
+	gc = irq_alloc_generic_chip("mxc-avic", 1, irq_start, avic_base,
+				    handle_level_irq);
+	gc->private = &avic_extra_irq;
+	gc->wake_enabled = IRQ_MSK(32);
+
+	ct = gc->chip_types;
+	ct->chip.irq_mask = irq_gc_mask_clr_bit;
+	ct->chip.irq_unmask = irq_gc_mask_set_bit;
+	ct->chip.irq_ack = irq_gc_mask_clr_bit;
+	ct->chip.irq_set_wake = irq_gc_set_wake;
+	ct->chip.irq_suspend = avic_irq_suspend;
+	ct->chip.irq_resume = avic_irq_resume;
+	ct->regs.mask = !idx ? AVIC_INTENABLEL : AVIC_INTENABLEH;
+	ct->regs.ack = ct->regs.mask;
+
+	irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
+}
+
+static void __exception_irq_entry avic_handle_irq(struct pt_regs *regs)
+{
+	u32 nivector;
+
+	do {
+		nivector = imx_readl(avic_base + AVIC_NIVECSR) >> 16;
+		if (nivector == 0xffff)
+			break;
+
+		generic_handle_domain_irq(domain, nivector);
+	} while (1);
+}
+
+/*
+ * This function initializes the AVIC hardware and disables all the
+ * interrupts. It registers the interrupt enable and disable functions
+ * to the kernel for each interrupt source.
+ */
+static void __init mxc_init_irq(void __iomem *irqbase)
+{
+	struct device_node *np;
+	int irq_base;
+	int i;
+
+	avic_base = irqbase;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx25-ccm");
+	mx25_ccm_base = of_iomap(np, 0);
+
+	if (mx25_ccm_base) {
+		/*
+		 * By default, we mask all interrupts. We set the actual mask
+		 * before we go into low-power mode.
+		 */
+		imx_writel(0xffffffff, mx25_ccm_base + MX25_CCM_LPIMR0);
+		imx_writel(0xffffffff, mx25_ccm_base + MX25_CCM_LPIMR1);
+	}
+
+	/* put the AVIC into the reset value with
+	 * all interrupts disabled
+	 */
+	imx_writel(0, avic_base + AVIC_INTCNTL);
+	imx_writel(0x1f, avic_base + AVIC_NIMASK);
+
+	/* disable all interrupts */
+	imx_writel(0, avic_base + AVIC_INTENABLEH);
+	imx_writel(0, avic_base + AVIC_INTENABLEL);
+
+	/* all IRQ no FIQ */
+	imx_writel(0, avic_base + AVIC_INTTYPEH);
+	imx_writel(0, avic_base + AVIC_INTTYPEL);
+
+	irq_base = irq_alloc_descs(-1, 0, AVIC_NUM_IRQS, numa_node_id());
+	WARN_ON(irq_base < 0);
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,avic");
+	domain = irq_domain_create_legacy(of_fwnode_handle(np), AVIC_NUM_IRQS, irq_base, 0,
+					  &irq_domain_simple_ops, NULL);
+	WARN_ON(!domain);
+
+	for (i = 0; i < AVIC_NUM_IRQS / 32; i++, irq_base += 32)
+		avic_init_gc(i, irq_base);
+
+	/* Set default priority value (0) for all IRQ's */
+	for (i = 0; i < 8; i++)
+		imx_writel(0, avic_base + AVIC_NIPRIORITY(i));
+
+	set_handle_irq(avic_handle_irq);
+
+#ifdef CONFIG_FIQ
+	/* Initialize FIQ */
+	init_FIQ(FIQ_START);
+#endif
+
+	printk(KERN_INFO "MXC IRQ initialized\n");
+}
+
+static int __init imx_avic_init(struct device_node *node,
+			       struct device_node *parent)
+{
+	void __iomem *avic_base;
+
+	avic_base = of_iomap(node, 0);
+	BUG_ON(!avic_base);
+	mxc_init_irq(avic_base);
+	return 0;
+}
+
+IRQCHIP_DECLARE(imx_avic, "fsl,avic", imx_avic_init);
@@ -0,0 +1,139 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2004-2014 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+
+#ifndef __ASM_ARCH_MXC_COMMON_H__
+#define __ASM_ARCH_MXC_COMMON_H__
+
+#include <linux/reboot.h>
+
+struct irq_data;
+struct platform_device;
+struct pt_regs;
+struct clk;
+struct device_node;
+enum mxc_cpu_pwr_mode;
+struct of_device_id;
+
+void mx31_map_io(void);
+void mx35_map_io(void);
+void imx21_init_early(void);
+void imx31_init_early(void);
+void imx35_init_early(void);
+void mx31_init_irq(void);
+void mx35_init_irq(void);
+void mxc_set_cpu_type(unsigned int type);
+void mxc_restart(enum reboot_mode, const char *);
+void mxc_arch_reset_init(void __iomem *);
+void imx1_reset_init(void __iomem *);
+void imx_set_aips(void __iomem *);
+void imx_aips_allow_unprivileged_access(const char *compat);
+int mxc_device_init(void);
+void imx_set_soc_revision(unsigned int rev);
+void imx_init_revision_from_anatop(void);
+void imx6_enable_rbc(bool enable);
+void imx_gpc_check_dt(void);
+void imx_gpc_set_arm_power_in_lpm(bool power_off);
+void imx_gpc_set_l2_mem_power_in_lpm(bool power_off);
+void imx_gpc_set_arm_power_up_timing(u32 sw2iso, u32 sw);
+void imx_gpc_set_arm_power_down_timing(u32 sw2iso, u32 sw);
+void imx25_pm_init(void);
+void imx27_pm_init(void);
+void imx5_pmu_init(void);
+
+enum mxc_cpu_pwr_mode {
+	WAIT_CLOCKED,		/* wfi only */
+	WAIT_UNCLOCKED,		/* WAIT */
+	WAIT_UNCLOCKED_POWER_OFF,	/* WAIT + SRPG */
+	STOP_POWER_ON,		/* just STOP */
+	STOP_POWER_OFF,		/* STOP + SRPG */
+};
+
+enum ulp_cpu_pwr_mode {
+	ULP_PM_HSRUN,    /* High speed run mode */
+	ULP_PM_RUN,      /* Run mode */
+	ULP_PM_WAIT,     /* Wait mode */
+	ULP_PM_STOP,     /* Stop mode */
+	ULP_PM_VLPS,     /* Very low power stop mode */
+	ULP_PM_VLLS,     /* very low leakage stop mode */
+};
+
+void imx_enable_cpu(int cpu, bool enable);
+void imx_set_cpu_jump(int cpu, void *jump_addr);
+u32 imx_get_cpu_arg(int cpu);
+void imx_set_cpu_arg(int cpu, u32 arg);
+#ifdef CONFIG_SMP
+void v7_secondary_startup(void);
+void imx_scu_map_io(void);
+void imx_smp_prepare(void);
+#else
+static inline void imx_scu_map_io(void) {}
+static inline void imx_smp_prepare(void) {}
+#endif
+void imx_src_init(void);
+void imx7_src_init(void);
+void imx_gpc_pre_suspend(bool arm_power_off);
+void imx_gpc_post_resume(void);
+void imx_gpc_mask_all(void);
+void imx_gpc_restore_all(void);
+void imx_gpc_hwirq_mask(unsigned int hwirq);
+void imx_gpc_hwirq_unmask(unsigned int hwirq);
+void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn);
+void imx_anatop_init(void);
+void imx_anatop_pre_suspend(void);
+void imx_anatop_post_resume(void);
+int imx6_set_lpm(enum mxc_cpu_pwr_mode mode);
+void imx6_set_int_mem_clk_lpm(bool enable);
+int imx_mmdc_get_ddr_type(void);
+int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode);
+
+void imx_cpu_die(unsigned int cpu);
+int imx_cpu_kill(unsigned int cpu);
+
+#ifdef CONFIG_SUSPEND
+void imx53_suspend(void __iomem *ocram_vbase);
+extern const u32 imx53_suspend_sz;
+void imx6_suspend(void __iomem *ocram_vbase);
+#else
+static inline void imx53_suspend(void __iomem *ocram_vbase) {}
+static __maybe_unused const u32 imx53_suspend_sz;
+static inline void imx6_suspend(void __iomem *ocram_vbase) {}
+#endif
+
+void v7_cpu_resume(void);
+
+void imx6_pm_ccm_init(const char *ccm_compat);
+void imx6q_pm_init(void);
+void imx6dl_pm_init(void);
+void imx6sl_pm_init(void);
+void imx6sx_pm_init(void);
+void imx6ul_pm_init(void);
+void imx7ulp_pm_init(void);
+
+#ifdef CONFIG_PM
+void imx51_pm_init(void);
+void imx53_pm_init(void);
+#else
+static inline void imx51_pm_init(void) {}
+static inline void imx53_pm_init(void) {}
+#endif
+
+#ifdef CONFIG_NEON
+int mx51_neon_fixup(void);
+#else
+static inline int mx51_neon_fixup(void) { return 0; }
+#endif
+
+#ifdef CONFIG_CACHE_L2X0
+void imx_init_l2cache(void);
+#else
+static inline void imx_init_l2cache(void) {}
+#endif
+
+extern const struct smp_operations imx_smp_ops;
+extern const struct smp_operations imx7_smp_ops;
+extern const struct smp_operations ls1021a_smp_ops;
+
+#endif
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MX25 CPU type detection
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved
+ */
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "iim.h"
+#include "hardware.h"
+
+static int mx25_cpu_rev = -1;
+
+static int mx25_read_cpu_rev(void)
+{
+	u32 rev;
+	void __iomem *iim_base;
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx25-iim");
+	iim_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!iim_base);
+	rev = readl(iim_base + MXC_IIMSREV);
+	iounmap(iim_base);
+
+	switch (rev) {
+	case 0x00:
+		return IMX_CHIP_REVISION_1_0;
+	case 0x01:
+		return IMX_CHIP_REVISION_1_1;
+	case 0x02:
+		return IMX_CHIP_REVISION_1_2;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
+int mx25_revision(void)
+{
+	if (mx25_cpu_rev == -1)
+		mx25_cpu_rev = mx25_read_cpu_rev();
+
+	return mx25_cpu_rev;
+}
+EXPORT_SYMBOL(mx25_revision);
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ */
+
+/*
+ * i.MX27 specific CPU detection code
+ */
+
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/module.h>
+
+#include "hardware.h"
+
+static int mx27_cpu_rev = -1;
+static int mx27_cpu_partnumber;
+
+#define SYS_CHIP_ID             0x00    /* The offset of CHIP ID register */
+#define SYSCTRL_OFFSET		0x800	/* Offset from CCM base address */
+
+static int mx27_read_cpu_rev(void)
+{
+	void __iomem *ccm_base;
+	struct device_node *np;
+	u32 val;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
+	ccm_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!ccm_base);
+	/*
+	 * now we have access to the IO registers. As we need
+	 * the silicon revision very early we read it here to
+	 * avoid any further hooks
+	*/
+	val = imx_readl(ccm_base + SYSCTRL_OFFSET + SYS_CHIP_ID);
+
+	mx27_cpu_partnumber = (int)((val >> 12) & 0xFFFF);
+
+	switch (val >> 28) {
+	case 0:
+		return IMX_CHIP_REVISION_1_0;
+	case 1:
+		return IMX_CHIP_REVISION_2_0;
+	case 2:
+		return IMX_CHIP_REVISION_2_1;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
+/*
+ * Returns:
+ *	the silicon revision of the cpu
+ *	-EINVAL - not a mx27
+ */
+int mx27_revision(void)
+{
+	if (mx27_cpu_rev == -1)
+		mx27_cpu_rev = mx27_read_cpu_rev();
+
+	if (mx27_cpu_partnumber != 0x8821)
+		return -EINVAL;
+
+	return mx27_cpu_rev;
+}
+EXPORT_SYMBOL(mx27_revision);
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MX31 CPU type detection
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ */
+
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "common.h"
+#include "hardware.h"
+#include "iim.h"
+
+static int mx31_cpu_rev = -1;
+
+static struct {
+	u8 srev;
+	const char *name;
+	unsigned int rev;
+} mx31_cpu_type[] = {
+	{ .srev = 0x00, .name = "i.MX31(L)", .rev = IMX_CHIP_REVISION_1_0 },
+	{ .srev = 0x10, .name = "i.MX31",    .rev = IMX_CHIP_REVISION_1_1 },
+	{ .srev = 0x11, .name = "i.MX31L",   .rev = IMX_CHIP_REVISION_1_1 },
+	{ .srev = 0x12, .name = "i.MX31",    .rev = IMX_CHIP_REVISION_1_1 },
+	{ .srev = 0x13, .name = "i.MX31L",   .rev = IMX_CHIP_REVISION_1_1 },
+	{ .srev = 0x14, .name = "i.MX31",    .rev = IMX_CHIP_REVISION_1_2 },
+	{ .srev = 0x15, .name = "i.MX31L",   .rev = IMX_CHIP_REVISION_1_2 },
+	{ .srev = 0x28, .name = "i.MX31",    .rev = IMX_CHIP_REVISION_2_0 },
+	{ .srev = 0x29, .name = "i.MX31L",   .rev = IMX_CHIP_REVISION_2_0 },
+};
+
+static int mx31_read_cpu_rev(void)
+{
+	void __iomem *iim_base;
+	struct device_node *np;
+	u32 i, srev;
+	int rev = IMX_CHIP_REVISION_UNKNOWN;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx31-iim");
+	iim_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!iim_base);
+
+	/* read SREV register from IIM module */
+	srev = imx_readl(iim_base + MXC_IIMSREV);
+	srev &= 0xff;
+
+	for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++)
+		if (srev == mx31_cpu_type[i].srev) {
+			rev = mx31_cpu_type[i].rev;
+			imx_print_silicon_rev(mx31_cpu_type[i].name,
+						mx31_cpu_type[i].rev);
+			goto out;
+		}
+
+	imx_print_silicon_rev("i.MX31", IMX_CHIP_REVISION_UNKNOWN);
+
+out:
+	iounmap(iim_base);
+	return rev;
+}
+
+int mx31_revision(void)
+{
+	if (mx31_cpu_rev == -1)
+		mx31_cpu_rev = mx31_read_cpu_rev();
+
+	return mx31_cpu_rev;
+}
+EXPORT_SYMBOL(mx31_revision);
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MX35 CPU type detection
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ */
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+
+#include "hardware.h"
+#include "iim.h"
+
+static int mx35_cpu_rev = -1;
+
+static int mx35_read_cpu_rev(void)
+{
+	void __iomem *iim_base;
+	struct device_node *np;
+	u32 rev;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx35-iim");
+	iim_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!iim_base);
+
+	rev = imx_readl(iim_base + MXC_IIMSREV);
+	switch (rev) {
+	case 0x00:
+		return IMX_CHIP_REVISION_1_0;
+	case 0x10:
+		return IMX_CHIP_REVISION_2_0;
+	case 0x11:
+		return IMX_CHIP_REVISION_2_1;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
+int mx35_revision(void)
+{
+	if (mx35_cpu_rev == -1)
+		mx35_cpu_rev = mx35_read_cpu_rev();
+
+	return mx35_cpu_rev;
+}
+EXPORT_SYMBOL(mx35_revision);
@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This file contains the CPU initialization code.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "hardware.h"
+#include "common.h"
+
+static int mx5_cpu_rev = -1;
+
+#define IIM_SREV 0x24
+
+static u32 imx5_read_srev_reg(const char *compat)
+{
+	void __iomem *iim_base;
+	struct device_node *np;
+	u32 srev;
+
+	np = of_find_compatible_node(NULL, NULL, compat);
+	iim_base = of_iomap(np, 0);
+	of_node_put(np);
+	WARN_ON(!iim_base);
+
+	srev = readl(iim_base + IIM_SREV) & 0xff;
+
+	iounmap(iim_base);
+
+	return srev;
+}
+
+static int get_mx51_srev(void)
+{
+	u32 rev = imx5_read_srev_reg("fsl,imx51-iim");
+
+	switch (rev) {
+	case 0x0:
+		return IMX_CHIP_REVISION_2_0;
+	case 0x10:
+		return IMX_CHIP_REVISION_3_0;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
+/*
+ * Returns:
+ *	the silicon revision of the cpu
+ */
+int mx51_revision(void)
+{
+	if (mx5_cpu_rev == -1)
+		mx5_cpu_rev = get_mx51_srev();
+
+	return mx5_cpu_rev;
+}
+EXPORT_SYMBOL(mx51_revision);
+
+#ifdef CONFIG_NEON
+
+/*
+ * All versions of the silicon before Rev. 3 have broken NEON implementations.
+ * Dependent on link order - so the assumption is that vfp_init is called
+ * before us.
+ */
+int __init mx51_neon_fixup(void)
+{
+	if (mx51_revision() < IMX_CHIP_REVISION_3_0 &&
+			(elf_hwcap & HWCAP_NEON)) {
+		elf_hwcap &= ~HWCAP_NEON;
+		pr_info("Turning off NEON support, detected broken NEON implementation\n");
+	}
+	return 0;
+}
+
+#endif
+
+static int get_mx53_srev(void)
+{
+	u32 rev = imx5_read_srev_reg("fsl,imx53-iim");
+
+	switch (rev) {
+	case 0x0:
+		return IMX_CHIP_REVISION_1_0;
+	case 0x2:
+		return IMX_CHIP_REVISION_2_0;
+	case 0x3:
+		return IMX_CHIP_REVISION_2_1;
+	default:
+		return IMX_CHIP_REVISION_UNKNOWN;
+	}
+}
+
+/*
+ * Returns:
+ *	the silicon revision of the cpu
+ */
+int mx53_revision(void)
+{
+	if (mx5_cpu_rev == -1)
+		mx5_cpu_rev = get_mx53_srev();
+
+	return mx5_cpu_rev;
+}
+EXPORT_SYMBOL(mx53_revision);
+
+#define ARM_GPC		0x4
+#define DBGEN		BIT(16)
+
+/*
+ * This enables the DBGEN bit in ARM_GPC register, which is
+ * required for accessing some performance counter features.
+ * Technically it is only required while perf is used, but to
+ * keep the source code simple we just enable it all the time
+ * when the kernel configuration allows using the feature.
+ */
+void __init imx5_pmu_init(void)
+{
+	void __iomem *tigerp_base;
+	struct device_node *np;
+	u32 gpc;
+
+	if (!IS_ENABLED(CONFIG_ARM_PMU))
+		return;
+
+	np = of_find_compatible_node(NULL, NULL, "arm,cortex-a8-pmu");
+	if (!np)
+		return;
+
+	if (!of_property_read_bool(np, "secure-reg-access"))
+		goto exit;
+
+	of_node_put(np);
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx51-tigerp");
+	if (!np)
+		return;
+
+	tigerp_base = of_iomap(np, 0);
+	if (!tigerp_base)
+		goto exit;
+
+	gpc = readl_relaxed(tigerp_base + ARM_GPC);
+	gpc |= DBGEN;
+	writel_relaxed(gpc, tigerp_base + ARM_GPC);
+	iounmap(tigerp_base);
+exit:
+	of_node_put(np);
+
+}
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "hardware.h"
+#include "common.h"
+
+unsigned int __mxc_cpu_type;
+static unsigned int imx_soc_revision;
+
+void mxc_set_cpu_type(unsigned int type)
+{
+	__mxc_cpu_type = type;
+}
+
+void imx_set_soc_revision(unsigned int rev)
+{
+	imx_soc_revision = rev;
+}
+
+unsigned int imx_get_soc_revision(void)
+{
+	return imx_soc_revision;
+}
+
+void imx_print_silicon_rev(const char *cpu, int srev)
+{
+	if (srev == IMX_CHIP_REVISION_UNKNOWN)
+		pr_info("CPU identified as %s, unknown revision\n", cpu);
+	else
+		pr_info("CPU identified as %s, silicon rev %d.%d\n",
+				cpu, (srev >> 4) & 0xf, srev & 0xf);
+}
+
+void __init imx_set_aips(void __iomem *base)
+{
+	unsigned int reg;
+/*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+	imx_writel(0x77777777, base + 0x0);
+	imx_writel(0x77777777, base + 0x4);
+
+/*
+ * Set all OPACRx to be non-bufferable, to not require
+ * supervisor privilege level for access, allow for
+ * write access and untrusted master access.
+ */
+	imx_writel(0x0, base + 0x40);
+	imx_writel(0x0, base + 0x44);
+	imx_writel(0x0, base + 0x48);
+	imx_writel(0x0, base + 0x4C);
+	reg = imx_readl(base + 0x50) & 0x00FFFFFF;
+	imx_writel(reg, base + 0x50);
+}
+
+void __init imx_aips_allow_unprivileged_access(
+		const char *compat)
+{
+	void __iomem *aips_base_addr;
+	struct device_node *np;
+
+	for_each_compatible_node(np, NULL, compat) {
+		aips_base_addr = of_iomap(np, 0);
+		WARN_ON(!aips_base_addr);
+		imx_set_aips(aips_base_addr);
+	}
+}
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/system_misc.h>
+#include "cpuidle.h"
+
+static __cpuidle int imx5_cpuidle_enter(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
+{
+	arm_pm_idle();
+	return index;
+}
+
+static struct cpuidle_driver imx5_cpuidle_driver = {
+	.name             = "imx5_cpuidle",
+	.owner            = THIS_MODULE,
+	.states[0] = {
+		.enter            = imx5_cpuidle_enter,
+		.exit_latency     = 2,
+		.target_residency = 1,
+		.name             = "IMX5 SRPG",
+		.desc             = "CPU state retained,powered off",
+	},
+	.state_count = 1,
+};
+
+int __init imx5_cpuidle_init(void)
+{
+	return cpuidle_register(&imx5_cpuidle_driver, NULL);
+}
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/context_tracking.h>
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/cpuidle.h>
+
+#include <soc/imx/cpuidle.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+static int num_idle_cpus = 0;
+static DEFINE_RAW_SPINLOCK(cpuidle_lock);
+
+static __cpuidle int imx6q_enter_wait(struct cpuidle_device *dev,
+				      struct cpuidle_driver *drv, int index)
+{
+	raw_spin_lock(&cpuidle_lock);
+	if (++num_idle_cpus == num_online_cpus())
+		imx6_set_lpm(WAIT_UNCLOCKED);
+	raw_spin_unlock(&cpuidle_lock);
+
+	ct_cpuidle_enter();
+	cpu_do_idle();
+	ct_cpuidle_exit();
+
+	raw_spin_lock(&cpuidle_lock);
+	if (num_idle_cpus-- == num_online_cpus())
+		imx6_set_lpm(WAIT_CLOCKED);
+	raw_spin_unlock(&cpuidle_lock);
+
+	return index;
+}
+
+static struct cpuidle_driver imx6q_cpuidle_driver = {
+	.name = "imx6q_cpuidle",
+	.owner = THIS_MODULE,
+	.states = {
+		/* WFI */
+		ARM_CPUIDLE_WFI_STATE,
+		/* WAIT */
+		{
+			.exit_latency = 50,
+			.target_residency = 75,
+			.flags = CPUIDLE_FLAG_TIMER_STOP | CPUIDLE_FLAG_RCU_IDLE,
+			.enter = imx6q_enter_wait,
+			.name = "WAIT",
+			.desc = "Clock off",
+		},
+	},
+	.state_count = 2,
+	.safe_state_index = 0,
+};
+
+/*
+ * i.MX6 Q/DL has an erratum (ERR006687) that prevents the FEC from waking the
+ * CPUs when they are in wait(unclocked) state. As the hardware workaround isn't
+ * applicable to all boards, disable the deeper idle state when the workaround
+ * isn't present and the FEC is in use.
+ */
+void imx6q_cpuidle_fec_irqs_used(void)
+{
+	cpuidle_driver_state_disabled(&imx6q_cpuidle_driver, 1, true);
+}
+EXPORT_SYMBOL_GPL(imx6q_cpuidle_fec_irqs_used);
+
+void imx6q_cpuidle_fec_irqs_unused(void)
+{
+	cpuidle_driver_state_disabled(&imx6q_cpuidle_driver, 1, false);
+}
+EXPORT_SYMBOL_GPL(imx6q_cpuidle_fec_irqs_unused);
+
+int __init imx6q_cpuidle_init(void)
+{
+	/* Set INT_MEM_CLK_LPM bit to get a reliable WAIT mode support */
+	imx6_set_int_mem_clk_lpm(true);
+
+	return cpuidle_register(&imx6q_cpuidle_driver, NULL);
+}
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/clk/imx.h>
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/cpuidle.h>
+
+#include "common.h"
+#include "cpuidle.h"
+
+static __cpuidle int imx6sl_enter_wait(struct cpuidle_device *dev,
+				       struct cpuidle_driver *drv, int index)
+{
+	imx6_set_lpm(WAIT_UNCLOCKED);
+	/*
+	 * Software workaround for ERR005311, see function
+	 * description for details.
+	 */
+	imx6sl_set_wait_clk(true);
+	cpu_do_idle();
+	imx6sl_set_wait_clk(false);
+	imx6_set_lpm(WAIT_CLOCKED);
+
+	return index;
+}
+
+static struct cpuidle_driver imx6sl_cpuidle_driver = {
+	.name = "imx6sl_cpuidle",
+	.owner = THIS_MODULE,
+	.states = {
+		/* WFI */
+		ARM_CPUIDLE_WFI_STATE,
+		/* WAIT */
+		{
+			.exit_latency = 50,
+			.target_residency = 75,
+			.flags = CPUIDLE_FLAG_TIMER_STOP,
+			.enter = imx6sl_enter_wait,
+			.name = "WAIT",
+			.desc = "Clock off",
+		},
+	},
+	.state_count = 2,
+	.safe_state_index = 0,
+};
+
+int __init imx6sl_cpuidle_init(void)
+{
+	return cpuidle_register(&imx6sl_cpuidle_driver, NULL);
+}
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/cpu_pm.h>
+#include <linux/module.h>
+#include <asm/cacheflush.h>
+#include <asm/cpuidle.h>
+#include <asm/suspend.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+static int imx6sx_idle_finish(unsigned long val)
+{
+	/*
+	 * for Cortex-A7 which has an internal L2
+	 * cache, need to flush it before powering
+	 * down ARM platform, since flushing L1 cache
+	 * here again has very small overhead, compared
+	 * to adding conditional code for L2 cache type,
+	 * just call flush_cache_all() is fine.
+	 */
+	flush_cache_all();
+	cpu_do_idle();
+
+	return 0;
+}
+
+static __cpuidle int imx6sx_enter_wait(struct cpuidle_device *dev,
+				       struct cpuidle_driver *drv, int index)
+{
+	imx6_set_lpm(WAIT_UNCLOCKED);
+
+	switch (index) {
+	case 1:
+		cpu_do_idle();
+		break;
+	case 2:
+		imx6_enable_rbc(true);
+		imx_gpc_set_arm_power_in_lpm(true);
+		imx_set_cpu_jump(0, v7_cpu_resume);
+		/* Need to notify there is a cpu pm operation. */
+		cpu_pm_enter();
+		cpu_cluster_pm_enter();
+
+		ct_cpuidle_enter();
+		cpu_suspend(0, imx6sx_idle_finish);
+		ct_cpuidle_exit();
+
+		cpu_cluster_pm_exit();
+		cpu_pm_exit();
+		imx_gpc_set_arm_power_in_lpm(false);
+		imx6_enable_rbc(false);
+		break;
+	default:
+		break;
+	}
+
+	imx6_set_lpm(WAIT_CLOCKED);
+
+	return index;
+}
+
+static struct cpuidle_driver imx6sx_cpuidle_driver = {
+	.name = "imx6sx_cpuidle",
+	.owner = THIS_MODULE,
+	.states = {
+		/* WFI */
+		ARM_CPUIDLE_WFI_STATE,
+		/* WAIT */
+		{
+			.exit_latency = 50,
+			.target_residency = 75,
+			.flags = CPUIDLE_FLAG_TIMER_STOP,
+			.enter = imx6sx_enter_wait,
+			.name = "WAIT",
+			.desc = "Clock off",
+		},
+		/* WAIT + ARM power off  */
+		{
+			/*
+			 * ARM gating 31us * 5 + RBC clear 65us
+			 * and some margin for SW execution, here set it
+			 * to 300us.
+			 */
+			.exit_latency = 300,
+			.target_residency = 500,
+			.flags = CPUIDLE_FLAG_TIMER_STOP |
+				 CPUIDLE_FLAG_RCU_IDLE,
+			.enter = imx6sx_enter_wait,
+			.name = "LOW-POWER-IDLE",
+			.desc = "ARM power off",
+		},
+	},
+	.state_count = 3,
+	.safe_state_index = 0,
+};
+
+int __init imx6sx_cpuidle_init(void)
+{
+	imx6_set_int_mem_clk_lpm(true);
+	imx6_enable_rbc(false);
+	imx_gpc_set_l2_mem_power_in_lpm(false);
+	/*
+	 * set ARM power up/down timing to the fastest,
+	 * sw2iso and sw can be set to one 32K cycle = 31us
+	 * except for power up sw2iso which need to be
+	 * larger than LDO ramp up time.
+	 */
+	imx_gpc_set_arm_power_up_timing(cpu_is_imx6sx() ? 0xf : 0x2, 1);
+	imx_gpc_set_arm_power_down_timing(1, 1);
+
+	return cpuidle_register(&imx6sx_cpuidle_driver, NULL);
+}
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017-2018 NXP
+ *   Anson Huang <Anson.Huang@nxp.com>
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/module.h>
+#include <asm/cpuidle.h>
+
+#include "common.h"
+#include "cpuidle.h"
+
+static __cpuidle int imx7ulp_enter_wait(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
+{
+	if (index == 1)
+		imx7ulp_set_lpm(ULP_PM_WAIT);
+	else
+		imx7ulp_set_lpm(ULP_PM_STOP);
+
+	cpu_do_idle();
+
+	imx7ulp_set_lpm(ULP_PM_RUN);
+
+	return index;
+}
+
+static struct cpuidle_driver imx7ulp_cpuidle_driver = {
+	.name = "imx7ulp_cpuidle",
+	.owner = THIS_MODULE,
+	.states = {
+		/* WFI */
+		ARM_CPUIDLE_WFI_STATE,
+		/* WAIT */
+		{
+			.exit_latency = 50,
+			.target_residency = 75,
+			.enter = imx7ulp_enter_wait,
+			.name = "WAIT",
+			.desc = "PSTOP2",
+		},
+		/* STOP */
+		{
+			.exit_latency = 100,
+			.target_residency = 150,
+			.enter = imx7ulp_enter_wait,
+			.name = "STOP",
+			.desc = "PSTOP1",
+		},
+	},
+	.state_count = 3,
+	.safe_state_index = 0,
+};
+
+int __init imx7ulp_cpuidle_init(void)
+{
+	return cpuidle_register(&imx7ulp_cpuidle_driver, NULL);
+}
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ */
+
+#ifdef CONFIG_CPU_IDLE
+extern int imx5_cpuidle_init(void);
+extern int imx6q_cpuidle_init(void);
+extern int imx6sl_cpuidle_init(void);
+extern int imx6sx_cpuidle_init(void);
+extern int imx7ulp_cpuidle_init(void);
+#else
+static inline int imx5_cpuidle_init(void)
+{
+	return 0;
+}
+static inline int imx6q_cpuidle_init(void)
+{
+	return 0;
+}
+static inline int imx6sl_cpuidle_init(void)
+{
+	return 0;
+}
+static inline int imx6sx_cpuidle_init(void)
+{
+	return 0;
+}
+static inline int imx7ulp_cpuidle_init(void)
+{
+	return 0;
+}
+#endif
@@ -0,0 +1,248 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
+ */
+
+#ifndef __ARCH_ARM_MACH_MX3_CRM_REGS_H__
+#define __ARCH_ARM_MACH_MX3_CRM_REGS_H__
+
+#define CKIH_CLK_FREQ           26000000
+#define CKIH_CLK_FREQ_27MHZ     27000000
+#define CKIL_CLK_FREQ           32768
+
+extern void __iomem *mx3_ccm_base;
+
+/* Register addresses */
+#define MXC_CCM_CCMR		0x00
+#define MXC_CCM_PDR0		0x04
+#define MXC_CCM_PDR1		0x08
+#define MX35_CCM_PDR2		0x0C
+#define MXC_CCM_RCSR		0x0C
+#define MX35_CCM_PDR3		0x10
+#define MXC_CCM_MPCTL		0x10
+#define MX35_CCM_PDR4		0x14
+#define MXC_CCM_UPCTL		0x14
+#define MX35_CCM_RCSR		0x18
+#define MXC_CCM_SRPCTL		0x18
+#define MX35_CCM_MPCTL		0x1C
+#define MXC_CCM_COSR		0x1C
+#define MX35_CCM_PPCTL		0x20
+#define MXC_CCM_CGR0		0x20
+#define MX35_CCM_ACMR		0x24
+#define MXC_CCM_CGR1		0x24
+#define MX35_CCM_COSR		0x28
+#define MXC_CCM_CGR2		0x28
+#define MX35_CCM_CGR0		0x2C
+#define MXC_CCM_WIMR		0x2C
+#define MX35_CCM_CGR1		0x30
+#define MXC_CCM_LDC		0x30
+#define MX35_CCM_CGR2		0x34
+#define MXC_CCM_DCVR0		0x34
+#define MX35_CCM_CGR3		0x38
+#define MXC_CCM_DCVR1		0x38
+#define MXC_CCM_DCVR2		0x3C
+#define MXC_CCM_DCVR3		0x40
+#define MXC_CCM_LTR0		0x44
+#define MXC_CCM_LTR1		0x48
+#define MXC_CCM_LTR2		0x4C
+#define MXC_CCM_LTR3		0x50
+#define MXC_CCM_LTBR0		0x54
+#define MXC_CCM_LTBR1		0x58
+#define MXC_CCM_PMCR0		0x5C
+#define MXC_CCM_PMCR1		0x60
+#define MXC_CCM_PDR2		0x64
+
+/* Register bit definitions */
+#define MXC_CCM_CCMR_WBEN                       (1 << 27)
+#define MXC_CCM_CCMR_CSCS                       (1 << 25)
+#define MXC_CCM_CCMR_PERCS                      (1 << 24)
+#define MXC_CCM_CCMR_SSI1S_OFFSET               18
+#define MXC_CCM_CCMR_SSI1S_MASK                 (0x3 << 18)
+#define MXC_CCM_CCMR_SSI2S_OFFSET               21
+#define MXC_CCM_CCMR_SSI2S_MASK                 (0x3 << 21)
+#define MXC_CCM_CCMR_LPM_OFFSET                 14
+#define MXC_CCM_CCMR_LPM_MASK                   (0x3 << 14)
+#define MXC_CCM_CCMR_LPM_WAIT_MX35		(0x1 << 14)
+#define MXC_CCM_CCMR_FIRS_OFFSET                11
+#define MXC_CCM_CCMR_FIRS_MASK                  (0x3 << 11)
+#define MXC_CCM_CCMR_UPE                        (1 << 9)
+#define MXC_CCM_CCMR_SPE                        (1 << 8)
+#define MXC_CCM_CCMR_MDS                        (1 << 7)
+#define MXC_CCM_CCMR_SBYCS                      (1 << 4)
+#define MXC_CCM_CCMR_MPE                        (1 << 3)
+#define MXC_CCM_CCMR_PRCS_OFFSET                1
+#define MXC_CCM_CCMR_PRCS_MASK                  (0x3 << 1)
+
+#define MXC_CCM_PDR0_CSI_PODF_OFFSET            26
+#define MXC_CCM_PDR0_CSI_PODF_MASK              (0x3F << 26)
+#define MXC_CCM_PDR0_CSI_PRDF_OFFSET            23
+#define MXC_CCM_PDR0_CSI_PRDF_MASK              (0x7 << 23)
+#define MXC_CCM_PDR0_PER_PODF_OFFSET            16
+#define MXC_CCM_PDR0_PER_PODF_MASK              (0x1F << 16)
+#define MXC_CCM_PDR0_HSP_PODF_OFFSET            11
+#define MXC_CCM_PDR0_HSP_PODF_MASK              (0x7 << 11)
+#define MXC_CCM_PDR0_NFC_PODF_OFFSET            8
+#define MXC_CCM_PDR0_NFC_PODF_MASK              (0x7 << 8)
+#define MXC_CCM_PDR0_IPG_PODF_OFFSET            6
+#define MXC_CCM_PDR0_IPG_PODF_MASK              (0x3 << 6)
+#define MXC_CCM_PDR0_MAX_PODF_OFFSET            3
+#define MXC_CCM_PDR0_MAX_PODF_MASK              (0x7 << 3)
+#define MXC_CCM_PDR0_MCU_PODF_OFFSET            0
+#define MXC_CCM_PDR0_MCU_PODF_MASK              0x7
+
+#define MXC_CCM_PDR1_USB_PRDF_OFFSET            30
+#define MXC_CCM_PDR1_USB_PRDF_MASK              (0x3 << 30)
+#define MXC_CCM_PDR1_USB_PODF_OFFSET            27
+#define MXC_CCM_PDR1_USB_PODF_MASK              (0x7 << 27)
+#define MXC_CCM_PDR1_FIRI_PRE_PODF_OFFSET       24
+#define MXC_CCM_PDR1_FIRI_PRE_PODF_MASK         (0x7 << 24)
+#define MXC_CCM_PDR1_FIRI_PODF_OFFSET           18
+#define MXC_CCM_PDR1_FIRI_PODF_MASK             (0x3F << 18)
+#define MXC_CCM_PDR1_SSI2_PRE_PODF_OFFSET       15
+#define MXC_CCM_PDR1_SSI2_PRE_PODF_MASK         (0x7 << 15)
+#define MXC_CCM_PDR1_SSI2_PODF_OFFSET           9
+#define MXC_CCM_PDR1_SSI2_PODF_MASK             (0x3F << 9)
+#define MXC_CCM_PDR1_SSI1_PRE_PODF_OFFSET       6
+#define MXC_CCM_PDR1_SSI1_PRE_PODF_MASK         (0x7 << 6)
+#define MXC_CCM_PDR1_SSI1_PODF_OFFSET           0
+#define MXC_CCM_PDR1_SSI1_PODF_MASK             0x3F
+
+/* Bit definitions for RCSR */
+#define MXC_CCM_RCSR_NF16B			0x80000000
+
+/*
+ * LTR0 register offsets
+ */
+#define MXC_CCM_LTR0_DIV3CK_OFFSET              1
+#define MXC_CCM_LTR0_DIV3CK_MASK                (0x3 << 1)
+#define MXC_CCM_LTR0_DNTHR_OFFSET               16
+#define MXC_CCM_LTR0_DNTHR_MASK                 (0x3F << 16)
+#define MXC_CCM_LTR0_UPTHR_OFFSET               22
+#define MXC_CCM_LTR0_UPTHR_MASK                 (0x3F << 22)
+
+/*
+ * LTR1 register offsets
+ */
+#define MXC_CCM_LTR1_PNCTHR_OFFSET              0
+#define MXC_CCM_LTR1_PNCTHR_MASK                0x3F
+#define MXC_CCM_LTR1_UPCNT_OFFSET               6
+#define MXC_CCM_LTR1_UPCNT_MASK                 (0xFF << 6)
+#define MXC_CCM_LTR1_DNCNT_OFFSET               14
+#define MXC_CCM_LTR1_DNCNT_MASK                 (0xFF << 14)
+#define MXC_CCM_LTR1_LTBRSR_MASK                0x400000
+#define MXC_CCM_LTR1_LTBRSR_OFFSET              22
+#define MXC_CCM_LTR1_LTBRSR                     0x400000
+#define MXC_CCM_LTR1_LTBRSH                     0x800000
+
+/*
+ * LTR2 bit definitions. x ranges from 0 for WSW9 to 6 for WSW15
+ */
+#define MXC_CCM_LTR2_WSW_OFFSET(x)              (11 + (x) * 3)
+#define MXC_CCM_LTR2_WSW_MASK(x)                (0x7 << \
+					MXC_CCM_LTR2_WSW_OFFSET((x)))
+#define MXC_CCM_LTR2_EMAC_OFFSET                0
+#define MXC_CCM_LTR2_EMAC_MASK                  0x1FF
+
+/*
+ * LTR3 bit definitions. x ranges from 0 for WSW0 to 8 for WSW8
+ */
+#define MXC_CCM_LTR3_WSW_OFFSET(x)              (5 + (x) * 3)
+#define MXC_CCM_LTR3_WSW_MASK(x)                (0x7 << \
+					MXC_CCM_LTR3_WSW_OFFSET((x)))
+
+#define MXC_CCM_PMCR0_DFSUP1                    0x80000000
+#define MXC_CCM_PMCR0_DFSUP1_SPLL               (0 << 31)
+#define MXC_CCM_PMCR0_DFSUP1_MPLL               (1 << 31)
+#define MXC_CCM_PMCR0_DFSUP0                    0x40000000
+#define MXC_CCM_PMCR0_DFSUP0_PLL                (0 << 30)
+#define MXC_CCM_PMCR0_DFSUP0_PDR                (1 << 30)
+#define MXC_CCM_PMCR0_DFSUP_MASK                (0x3 << 30)
+
+#define DVSUP_TURBO				0
+#define DVSUP_HIGH				1
+#define DVSUP_MEDIUM				2
+#define DVSUP_LOW				3
+#define MXC_CCM_PMCR0_DVSUP_TURBO               (DVSUP_TURBO << 28)
+#define MXC_CCM_PMCR0_DVSUP_HIGH                (DVSUP_HIGH << 28)
+#define MXC_CCM_PMCR0_DVSUP_MEDIUM              (DVSUP_MEDIUM << 28)
+#define MXC_CCM_PMCR0_DVSUP_LOW                 (DVSUP_LOW << 28)
+#define MXC_CCM_PMCR0_DVSUP_OFFSET              28
+#define MXC_CCM_PMCR0_DVSUP_MASK                (0x3 << 28)
+#define MXC_CCM_PMCR0_UDSC                      0x08000000
+#define MXC_CCM_PMCR0_UDSC_MASK                 (1 << 27)
+#define MXC_CCM_PMCR0_UDSC_UP                   (1 << 27)
+#define MXC_CCM_PMCR0_UDSC_DOWN                 (0 << 27)
+
+#define MXC_CCM_PMCR0_VSCNT_1                   (0x0 << 24)
+#define MXC_CCM_PMCR0_VSCNT_2                   (0x1 << 24)
+#define MXC_CCM_PMCR0_VSCNT_3                   (0x2 << 24)
+#define MXC_CCM_PMCR0_VSCNT_4                   (0x3 << 24)
+#define MXC_CCM_PMCR0_VSCNT_5                   (0x4 << 24)
+#define MXC_CCM_PMCR0_VSCNT_6                   (0x5 << 24)
+#define MXC_CCM_PMCR0_VSCNT_7                   (0x6 << 24)
+#define MXC_CCM_PMCR0_VSCNT_8                   (0x7 << 24)
+#define MXC_CCM_PMCR0_VSCNT_OFFSET              24
+#define MXC_CCM_PMCR0_VSCNT_MASK                (0x7 << 24)
+#define MXC_CCM_PMCR0_DVFEV                     0x00800000
+#define MXC_CCM_PMCR0_DVFIS                     0x00400000
+#define MXC_CCM_PMCR0_LBMI                      0x00200000
+#define MXC_CCM_PMCR0_LBFL                      0x00100000
+#define MXC_CCM_PMCR0_LBCF_4                    (0x0 << 18)
+#define MXC_CCM_PMCR0_LBCF_8                    (0x1 << 18)
+#define MXC_CCM_PMCR0_LBCF_12                   (0x2 << 18)
+#define MXC_CCM_PMCR0_LBCF_16                   (0x3 << 18)
+#define MXC_CCM_PMCR0_LBCF_OFFSET               18
+#define MXC_CCM_PMCR0_LBCF_MASK                 (0x3 << 18)
+#define MXC_CCM_PMCR0_PTVIS                     0x00020000
+#define MXC_CCM_PMCR0_UPDTEN                    0x00010000
+#define MXC_CCM_PMCR0_UPDTEN_MASK               (0x1 << 16)
+#define MXC_CCM_PMCR0_FSVAIM                    0x00008000
+#define MXC_CCM_PMCR0_FSVAI_OFFSET              13
+#define MXC_CCM_PMCR0_FSVAI_MASK                (0x3 << 13)
+#define MXC_CCM_PMCR0_DPVCR                     0x00001000
+#define MXC_CCM_PMCR0_DPVV                      0x00000800
+#define MXC_CCM_PMCR0_WFIM                      0x00000400
+#define MXC_CCM_PMCR0_DRCE3                     0x00000200
+#define MXC_CCM_PMCR0_DRCE2                     0x00000100
+#define MXC_CCM_PMCR0_DRCE1                     0x00000080
+#define MXC_CCM_PMCR0_DRCE0                     0x00000040
+#define MXC_CCM_PMCR0_DCR                       0x00000020
+#define MXC_CCM_PMCR0_DVFEN                     0x00000010
+#define MXC_CCM_PMCR0_PTVAIM                    0x00000008
+#define MXC_CCM_PMCR0_PTVAI_OFFSET              1
+#define MXC_CCM_PMCR0_PTVAI_MASK                (0x3 << 1)
+#define MXC_CCM_PMCR0_DPTEN                     0x00000001
+
+#define MXC_CCM_PMCR1_DVGP_OFFSET               0
+#define MXC_CCM_PMCR1_DVGP_MASK                 (0xF)
+
+#define MXC_CCM_PMCR1_PLLRDIS                      (0x1 << 7)
+#define MXC_CCM_PMCR1_EMIRQ_EN                      (0x1 << 8)
+
+#define MXC_CCM_DCVR_ULV_MASK                   (0x3FF << 22)
+#define MXC_CCM_DCVR_ULV_OFFSET                 22
+#define MXC_CCM_DCVR_LLV_MASK                   (0x3FF << 12)
+#define MXC_CCM_DCVR_LLV_OFFSET                 12
+#define MXC_CCM_DCVR_ELV_MASK                   (0x3FF << 2)
+#define MXC_CCM_DCVR_ELV_OFFSET                 2
+
+#define MXC_CCM_PDR2_MST2_PDF_MASK              (0x3F << 7)
+#define MXC_CCM_PDR2_MST2_PDF_OFFSET            7
+#define MXC_CCM_PDR2_MST1_PDF_MASK              0x3F
+#define MXC_CCM_PDR2_MST1_PDF_OFFSET            0
+
+#define MXC_CCM_COSR_CLKOSEL_MASK               0x0F
+#define MXC_CCM_COSR_CLKOSEL_OFFSET             0
+#define MXC_CCM_COSR_CLKOUTDIV_MASK             (0x07 << 6)
+#define MXC_CCM_COSR_CLKOUTDIV_OFFSET           6
+#define MXC_CCM_COSR_CLKOEN                     (1 << 9)
+
+/*
+ * PMCR0 register offsets
+ */
+#define MXC_CCM_PMCR0_LBFL_OFFSET   20
+#define MXC_CCM_PMCR0_DFSUP0_OFFSET 30
+#define MXC_CCM_PMCR0_DFSUP1_OFFSET 31
+
+#endif				/* __ARCH_ARM_MACH_MX3_CRM_REGS_H__ */
@@ -0,0 +1,284 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011-2013 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+#include "common.h"
+#include "hardware.h"
+
+#define GPC_CNTR		0x0
+#define GPC_IMR1		0x008
+#define GPC_PGC_CPU_PDN		0x2a0
+#define GPC_PGC_CPU_PUPSCR	0x2a4
+#define GPC_PGC_CPU_PDNSCR	0x2a8
+#define GPC_PGC_SW2ISO_SHIFT	0x8
+#define GPC_PGC_SW_SHIFT	0x0
+
+#define GPC_CNTR_L2_PGE_SHIFT	22
+
+#define IMR_NUM			4
+#define GPC_MAX_IRQS		(IMR_NUM * 32)
+
+static void __iomem *gpc_base;
+static u32 gpc_wake_irqs[IMR_NUM];
+static u32 gpc_saved_imrs[IMR_NUM];
+
+void imx_gpc_set_arm_power_up_timing(u32 sw2iso, u32 sw)
+{
+	writel_relaxed((sw2iso << GPC_PGC_SW2ISO_SHIFT) |
+		(sw << GPC_PGC_SW_SHIFT), gpc_base + GPC_PGC_CPU_PUPSCR);
+}
+
+void imx_gpc_set_arm_power_down_timing(u32 sw2iso, u32 sw)
+{
+	writel_relaxed((sw2iso << GPC_PGC_SW2ISO_SHIFT) |
+		(sw << GPC_PGC_SW_SHIFT), gpc_base + GPC_PGC_CPU_PDNSCR);
+}
+
+void imx_gpc_set_arm_power_in_lpm(bool power_off)
+{
+	writel_relaxed(power_off, gpc_base + GPC_PGC_CPU_PDN);
+}
+
+void imx_gpc_set_l2_mem_power_in_lpm(bool power_off)
+{
+	u32 val;
+
+	val = readl_relaxed(gpc_base + GPC_CNTR);
+	val &= ~(1 << GPC_CNTR_L2_PGE_SHIFT);
+	if (power_off)
+		val |= 1 << GPC_CNTR_L2_PGE_SHIFT;
+	writel_relaxed(val, gpc_base + GPC_CNTR);
+}
+
+void imx_gpc_pre_suspend(bool arm_power_off)
+{
+	void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
+	int i;
+
+	/* Tell GPC to power off ARM core when suspend */
+	if (arm_power_off)
+		imx_gpc_set_arm_power_in_lpm(arm_power_off);
+
+	for (i = 0; i < IMR_NUM; i++) {
+		gpc_saved_imrs[i] = readl_relaxed(reg_imr1 + i * 4);
+		writel_relaxed(~gpc_wake_irqs[i], reg_imr1 + i * 4);
+	}
+}
+
+void imx_gpc_post_resume(void)
+{
+	void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
+	int i;
+
+	/* Keep ARM core powered on for other low-power modes */
+	imx_gpc_set_arm_power_in_lpm(false);
+
+	for (i = 0; i < IMR_NUM; i++)
+		writel_relaxed(gpc_saved_imrs[i], reg_imr1 + i * 4);
+}
+
+static int imx_gpc_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+	unsigned int idx = d->hwirq / 32;
+	u32 mask;
+
+	mask = 1 << d->hwirq % 32;
+	gpc_wake_irqs[idx] = on ? gpc_wake_irqs[idx] | mask :
+				  gpc_wake_irqs[idx] & ~mask;
+
+	/*
+	 * Do *not* call into the parent, as the GIC doesn't have any
+	 * wake-up facility...
+	 */
+	return 0;
+}
+
+void imx_gpc_mask_all(void)
+{
+	void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
+	int i;
+
+	for (i = 0; i < IMR_NUM; i++) {
+		gpc_saved_imrs[i] = readl_relaxed(reg_imr1 + i * 4);
+		writel_relaxed(~0, reg_imr1 + i * 4);
+	}
+}
+
+void imx_gpc_restore_all(void)
+{
+	void __iomem *reg_imr1 = gpc_base + GPC_IMR1;
+	int i;
+
+	for (i = 0; i < IMR_NUM; i++)
+		writel_relaxed(gpc_saved_imrs[i], reg_imr1 + i * 4);
+}
+
+void imx_gpc_hwirq_unmask(unsigned int hwirq)
+{
+	void __iomem *reg;
+	u32 val;
+
+	reg = gpc_base + GPC_IMR1 + hwirq / 32 * 4;
+	val = readl_relaxed(reg);
+	val &= ~(1 << hwirq % 32);
+	writel_relaxed(val, reg);
+}
+
+void imx_gpc_hwirq_mask(unsigned int hwirq)
+{
+	void __iomem *reg;
+	u32 val;
+
+	reg = gpc_base + GPC_IMR1 + hwirq / 32 * 4;
+	val = readl_relaxed(reg);
+	val |= 1 << (hwirq % 32);
+	writel_relaxed(val, reg);
+}
+
+static void imx_gpc_irq_unmask(struct irq_data *d)
+{
+	imx_gpc_hwirq_unmask(d->hwirq);
+	irq_chip_unmask_parent(d);
+}
+
+static void imx_gpc_irq_mask(struct irq_data *d)
+{
+	imx_gpc_hwirq_mask(d->hwirq);
+	irq_chip_mask_parent(d);
+}
+
+static struct irq_chip imx_gpc_chip = {
+	.name			= "GPC",
+	.irq_eoi		= irq_chip_eoi_parent,
+	.irq_mask		= imx_gpc_irq_mask,
+	.irq_unmask		= imx_gpc_irq_unmask,
+	.irq_retrigger		= irq_chip_retrigger_hierarchy,
+	.irq_set_wake		= imx_gpc_irq_set_wake,
+	.irq_set_type           = irq_chip_set_type_parent,
+#ifdef CONFIG_SMP
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#endif
+};
+
+static int imx_gpc_domain_translate(struct irq_domain *d,
+				    struct irq_fwspec *fwspec,
+				    unsigned long *hwirq,
+				    unsigned int *type)
+{
+	if (is_of_node(fwspec->fwnode)) {
+		if (fwspec->param_count != 3)
+			return -EINVAL;
+
+		/* No PPI should point to this domain */
+		if (fwspec->param[0] != 0)
+			return -EINVAL;
+
+		*hwirq = fwspec->param[1];
+		*type = fwspec->param[2];
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int imx_gpc_domain_alloc(struct irq_domain *domain,
+				  unsigned int irq,
+				  unsigned int nr_irqs, void *data)
+{
+	struct irq_fwspec *fwspec = data;
+	struct irq_fwspec parent_fwspec;
+	irq_hw_number_t hwirq;
+	int i;
+
+	if (fwspec->param_count != 3)
+		return -EINVAL;	/* Not GIC compliant */
+	if (fwspec->param[0] != 0)
+		return -EINVAL;	/* No PPI should point to this domain */
+
+	hwirq = fwspec->param[1];
+	if (hwirq >= GPC_MAX_IRQS)
+		return -EINVAL;	/* Can't deal with this */
+
+	for (i = 0; i < nr_irqs; i++)
+		irq_domain_set_hwirq_and_chip(domain, irq + i, hwirq + i,
+					      &imx_gpc_chip, NULL);
+
+	parent_fwspec = *fwspec;
+	parent_fwspec.fwnode = domain->parent->fwnode;
+	return irq_domain_alloc_irqs_parent(domain, irq, nr_irqs,
+					    &parent_fwspec);
+}
+
+static const struct irq_domain_ops imx_gpc_domain_ops = {
+	.translate	= imx_gpc_domain_translate,
+	.alloc		= imx_gpc_domain_alloc,
+	.free		= irq_domain_free_irqs_common,
+};
+
+static int __init imx_gpc_init(struct device_node *node,
+			       struct device_node *parent)
+{
+	struct irq_domain *parent_domain, *domain;
+	int i;
+
+	if (!parent) {
+		pr_err("%pOF: no parent, giving up\n", node);
+		return -ENODEV;
+	}
+
+	parent_domain = irq_find_host(parent);
+	if (!parent_domain) {
+		pr_err("%pOF: unable to obtain parent domain\n", node);
+		return -ENXIO;
+	}
+
+	gpc_base = of_iomap(node, 0);
+	if (WARN_ON(!gpc_base))
+	        return -ENOMEM;
+
+	domain = irq_domain_create_hierarchy(parent_domain, 0, GPC_MAX_IRQS, of_fwnode_handle(node),
+					     &imx_gpc_domain_ops, NULL);
+	if (!domain) {
+		iounmap(gpc_base);
+		return -ENOMEM;
+	}
+
+	/* Initially mask all interrupts */
+	for (i = 0; i < IMR_NUM; i++)
+		writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
+
+	/*
+	 * Clear the OF_POPULATED flag set in of_irq_init so that
+	 * later the GPC power domain driver will not be skipped.
+	 */
+	of_node_clear_flag(node, OF_POPULATED);
+
+	return 0;
+}
+IRQCHIP_DECLARE(imx_gpc, "fsl,imx6q-gpc", imx_gpc_init);
+
+void __init imx_gpc_check_dt(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc");
+	if (WARN_ON(!np))
+		return;
+
+	if (WARN_ON(!of_property_read_bool(np, "interrupt-controller"))) {
+		pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
+
+		/* map GPC, so that at least CPUidle and WARs keep working */
+		gpc_base = of_iomap(np, 0);
+	}
+	of_node_put(np);
+}
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007, 2014 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ */
+
+#ifndef __ASM_ARCH_MXC_HARDWARE_H__
+#define __ASM_ARCH_MXC_HARDWARE_H__
+
+#ifndef __ASSEMBLY__
+#include <asm/io.h>
+#include <soc/imx/revision.h>
+#endif
+#include <linux/sizes.h>
+
+#define addr_in_module(addr, mod) \
+	((unsigned long)(addr) - mod ## _BASE_ADDR < mod ## _SIZE)
+
+#define IMX_IO_P2V_MODULE(addr, module)					\
+	(((addr) - module ## _BASE_ADDR) < module ## _SIZE ?		\
+	 (addr) - (module ## _BASE_ADDR) + (module ## _BASE_ADDR_VIRT) : 0)
+
+/*
+ * This is rather complicated for humans and ugly to verify, but for a machine
+ * it's OK.  Still more as it is usually only applied to constants.  The upsides
+ * on using this approach are:
+ *
+ *  - same mapping on all i.MX machines
+ *  - works for assembler, too
+ *  - no need to nurture #defines for virtual addresses
+ *
+ * The downside it, it's hard to verify (but I have a script for that).
+ *
+ * Obviously this needs to be injective for each SoC.  In general it maps the
+ * whole address space to [0xf4000000, 0xf5ffffff].  So [0xf6000000,0xfeffffff]
+ * is free for per-machine use (e.g. KZM_ARM11_01 uses 64MiB there).
+ *
+ * It applies the following mappings for the different SoCs:
+ *
+ * mx1:
+ *	IO	0x00200000+0x100000	->	0xf4000000+0x100000
+ * mx21:
+ *	AIPI	0x10000000+0x100000	->	0xf4400000+0x100000
+ *	SAHB1	0x80000000+0x100000	->	0xf5000000+0x100000
+ *	X_MEMC	0xdf000000+0x004000	->	0xf5f00000+0x004000
+ * mx25:
+ *	AIPS1	0x43f00000+0x100000	->	0xf5300000+0x100000
+ *	AIPS2	0x53f00000+0x100000	->	0xf5700000+0x100000
+ *	AVIC	0x68000000+0x100000	->	0xf5800000+0x100000
+ * mx27:
+ *	AIPI	0x10000000+0x100000	->	0xf4400000+0x100000
+ *	SAHB1	0x80000000+0x100000	->	0xf5000000+0x100000
+ *	X_MEMC	0xd8000000+0x100000	->	0xf5c00000+0x100000
+ * mx31:
+ *	AIPS1	0x43f00000+0x100000	->	0xf5300000+0x100000
+ *	AIPS2	0x53f00000+0x100000	->	0xf5700000+0x100000
+ *	AVIC	0x68000000+0x100000	->	0xf5800000+0x100000
+ *	X_MEMC	0xb8000000+0x010000	->	0xf5c00000+0x010000
+ *	SPBA0	0x50000000+0x100000	->	0xf5400000+0x100000
+ * mx35:
+ *	AIPS1	0x43f00000+0x100000	->	0xf5300000+0x100000
+ *	AIPS2	0x53f00000+0x100000	->	0xf5700000+0x100000
+ *	AVIC	0x68000000+0x100000	->	0xf5800000+0x100000
+ *	X_MEMC	0xb8000000+0x010000	->	0xf5c00000+0x010000
+ *	SPBA0	0x50000000+0x100000	->	0xf5400000+0x100000
+ * mx51:
+ *	TZIC	0x0fffc000+0x004000	->	0xf4bfc000+0x004000
+ *	IRAM	0x1ffe0000+0x020000	->	0xf4fe0000+0x020000
+ *	DEBUG	0x60000000+0x100000	->	0xf5000000+0x100000
+ *	SPBA0	0x70000000+0x100000	->	0xf5400000+0x100000
+ *	AIPS1	0x73f00000+0x100000	->	0xf5700000+0x100000
+ *	AIPS2	0x83f00000+0x100000	->	0xf5300000+0x100000
+ * mx53:
+ *	TZIC	0x0fffc000+0x004000	->	0xf4bfc000+0x004000
+ *	DEBUG	0x40000000+0x100000	->	0xf5000000+0x100000
+ *	SPBA0	0x50000000+0x100000	->	0xf5400000+0x100000
+ *	AIPS1	0x53f00000+0x100000	->	0xf5700000+0x100000
+ *	AIPS2	0x63f00000+0x100000	->	0xf5300000+0x100000
+ * mx6q:
+ *	SCU	0x00a00000+0x004000	->	0xf4000000+0x004000
+ *	CCM	0x020c4000+0x004000	->	0xf42c4000+0x004000
+ *	ANATOP	0x020c8000+0x004000	->	0xf42c8000+0x004000
+ *	UART4	0x021f0000+0x004000	->	0xf42f0000+0x004000
+ */
+#define IMX_IO_P2V(x)	(						\
+			(((x) & 0x80000000) >> 7) |			\
+			(0xf4000000 +					\
+			(((x) & 0x50000000) >> 6) +			\
+			(((x) & 0x0b000000) >> 4) +			\
+			(((x) & 0x000fffff))))
+
+#define IMX_IO_ADDRESS(x)	IOMEM(IMX_IO_P2V(x))
+
+#include "mxc.h"
+
+#include "mx3x.h"
+#include "mx31.h"
+#include "mx35.h"
+#include "mx2x.h"
+#include "mx27.h"
+
+#define imx_map_entry(soc, name, _type)	{				\
+	.virtual = soc ## _IO_P2V(soc ## _ ## name ## _BASE_ADDR),	\
+	.pfn = __phys_to_pfn(soc ## _ ## name ## _BASE_ADDR),		\
+	.length = soc ## _ ## name ## _SIZE,				\
+	.type = _type,							\
+}
+
+#endif /* __ASM_ARCH_MXC_HARDWARE_H__ */
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/assembler.h>
+
+.arch armv7-a
+
+diag_reg_offset:
+	.word	g_diag_reg - .
+
+	.macro	set_diag_reg
+	adr	r0, diag_reg_offset
+	ldr	r1, [r0]
+	add	r1, r1, r0		@ r1 = physical &g_diag_reg
+	ldr	r0, [r1]
+	mcr	p15, 0, r0, c15, c0, 1	@ write diagnostic register
+	.endm
+
+ENTRY(v7_secondary_startup)
+ARM_BE8(setend be)			@ go BE8 if entered LE
+	mrc	p15, 0, r0, c0, c0, 0
+	lsl	r0, r0, #16
+	lsr	r0, r0, #20
+	/* 0xc07 is cortex A7's ID */
+	mov	r1, #0xc00
+	orr	r1, #0x7
+	cmp	r0, r1
+	beq	secondary_startup
+
+	set_diag_reg
+	b	secondary_startup
+ENDPROC(v7_secondary_startup)
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/errno.h>
+#include <linux/jiffies.h>
+#include <asm/cacheflush.h>
+#include <asm/cp15.h>
+#include <asm/proc-fns.h>
+
+#include "common.h"
+#include "hardware.h"
+
+/*
+ * platform-specific code to shutdown a CPU
+ *
+ * Called with IRQs disabled
+ */
+void imx_cpu_die(unsigned int cpu)
+{
+	v7_exit_coherency_flush(louis);
+	/*
+	 * We use the cpu jumping argument register to sync with
+	 * imx_cpu_kill() which is running on cpu0 and waiting for
+	 * the register being cleared to kill the cpu.
+	 */
+	imx_set_cpu_arg(cpu, ~0);
+
+	while (1)
+		cpu_do_idle();
+}
+
+int imx_cpu_kill(unsigned int cpu)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(50);
+
+	while (imx_get_cpu_arg(cpu) == 0)
+		if (time_after(jiffies, timeout))
+			return 0;
+	imx_enable_cpu(cpu, false);
+	imx_set_cpu_arg(cpu, 0);
+	if (cpu_is_imx7d())
+		imx_gpcv2_set_core1_pdn_pup_by_software(true);
+	return 1;
+}
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ */
+
+#ifndef __ASM_ARCH_MXC_IIM_H__
+#define __ASM_ARCH_MXC_IIM_H__
+
+/* Register offsets */
+#define MXC_IIMSTAT             0x0000
+#define MXC_IIMSTATM            0x0004
+#define MXC_IIMERR              0x0008
+#define MXC_IIMEMASK            0x000C
+#define MXC_IIMFCTL             0x0010
+#define MXC_IIMUA               0x0014
+#define MXC_IIMLA               0x0018
+#define MXC_IIMSDAT             0x001C
+#define MXC_IIMPREV             0x0020
+#define MXC_IIMSREV             0x0024
+#define MXC_IIMPRG_P            0x0028
+#define MXC_IIMSCS0             0x002C
+#define MXC_IIMSCS1             0x0030
+#define MXC_IIMSCS2             0x0034
+#define MXC_IIMSCS3             0x0038
+#define MXC_IIMFBAC0            0x0800
+#define MXC_IIMJAC              0x0804
+#define MXC_IIMHWV1             0x0808
+#define MXC_IIMHWV2             0x080C
+#define MXC_IIMHAB0             0x0810
+#define MXC_IIMHAB1             0x0814
+/* Definitions for i.MX27 TO2 */
+#define MXC_IIMMAC              0x0814
+#define MXC_IIMPREV_FUSE        0x0818
+#define MXC_IIMSREV_FUSE        0x081C
+#define MXC_IIMSJC_CHALL_0      0x0820
+#define MXC_IIMSJC_CHALL_7      0x083C
+#define MXC_IIMFB0UC17          0x0840
+#define MXC_IIMFB0UC255         0x0BFC
+#define MXC_IIMFBAC1            0x0C00
+/* Definitions for i.MX27 TO2 */
+#define MXC_IIMSUID             0x0C04
+#define MXC_IIMKEY0             0x0C04
+#define MXC_IIMKEY20            0x0C54
+#define MXC_IIMSJC_RESP_0       0x0C58
+#define MXC_IIMSJC_RESP_7       0x0C74
+#define MXC_IIMFB1UC30          0x0C78
+#define MXC_IIMFB1UC255         0x0FFC
+
+/* Bit definitions */
+
+#define MXC_IIMHWV1_WLOCK               (0x1 << 7)
+#define MXC_IIMHWV1_MCU_ENDIAN          (0x1 << 6)
+#define MXC_IIMHWV1_DSP_ENDIAN          (0x1 << 5)
+#define MXC_IIMHWV1_BOOT_INT            (0x1 << 4)
+#define MXC_IIMHWV1_SCC_DISABLE         (0x1 << 3)
+#define MXC_IIMHWV1_HANTRO_DISABLE      (0x1 << 2)
+#define MXC_IIMHWV1_MEMSTICK_DIS        (0x1 << 1)
+
+#define MXC_IIMHWV2_WLOCK               (0x1 << 7)
+#define MXC_IIMHWV2_BP_SDMA             (0x1 << 6)
+#define MXC_IIMHWV2_SCM_DCM             (0x1 << 5)
+
+#endif /* __ASM_ARCH_MXC_IIM_H__ */
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) BitBox Ltd 2010
+ */
+
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/platform_data/asoc-imx-ssi.h>
+
+#include "irq-common.h"
+
+int mxc_set_irq_fiq(unsigned int irq, unsigned int type)
+{
+	struct irq_chip_generic *gc;
+	struct mxc_extra_irq *exirq;
+	int ret;
+
+	ret = -ENOSYS;
+
+	gc = irq_get_chip_data(irq);
+	if (gc && gc->private) {
+		exirq = gc->private;
+		if (exirq->set_irq_fiq) {
+			struct irq_data *d = irq_get_irq_data(irq);
+			ret = exirq->set_irq_fiq(irqd_to_hwirq(d), type);
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(mxc_set_irq_fiq);
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) BitBox Ltd 2010
+ */
+
+#ifndef __PLAT_MXC_IRQ_COMMON_H__
+#define __PLAT_MXC_IRQ_COMMON_H__
+
+/* all normal IRQs can be FIQs */
+#define FIQ_START	0
+
+struct mxc_extra_irq
+{
+	int (*set_irq_fiq)(unsigned int irq, unsigned int type);
+};
+
+#endif
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
+ */
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static void __init imx1_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX1);
+}
+
+static const char * const imx1_dt_board_compat[] __initconst = {
+	"fsl,imx1",
+	NULL
+};
+
+DT_MACHINE_START(IMX1_DT, "Freescale i.MX1 (Device Tree Support)")
+	.init_early	= imx1_init_early,
+	.dt_compat	= imx1_dt_board_compat,
+	.restart	= mxc_restart,
+MACHINE_END
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ */
+
+#include <asm/mach/arch.h>
+#include "common.h"
+#include "hardware.h"
+
+static void __init imx25_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX25);
+}
+
+static void __init imx25_dt_init(void)
+{
+	imx_aips_allow_unprivileged_access("fsl,imx25-aips");
+}
+
+static const char * const imx25_dt_board_compat[] __initconst = {
+	"fsl,imx25",
+	NULL
+};
+
+DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)")
+	.init_early	= imx25_init_early,
+	.init_machine	= imx25_dt_init,
+	.init_late      = imx25_pm_init,
+	.dt_compat	= imx25_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ */
+
+#include <linux/init.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+#include "hardware.h"
+#include "mx27.h"
+
+/* MX27 memory map definition */
+static struct map_desc imx27_io_desc[] __initdata = {
+	/*
+	 * this fixed mapping covers:
+	 * - AIPI1
+	 * - AIPI2
+	 * - AITC
+	 * - ROM Patch
+	 * - and some reserved space
+	 */
+	imx_map_entry(MX27, AIPI, MT_DEVICE),
+	/*
+	 * this fixed mapping covers:
+	 * - CSI
+	 * - ATA
+	 */
+	imx_map_entry(MX27, SAHB1, MT_DEVICE),
+	/*
+	 * this fixed mapping covers:
+	 * - EMI
+	 */
+	imx_map_entry(MX27, X_MEMC, MT_DEVICE),
+};
+
+/*
+ * Initialize the memory map. It is called during the
+ * system startup to create static physical to virtual
+ * memory map for the IO modules.
+ */
+static void __init mx27_map_io(void)
+{
+	iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
+}
+
+static void __init imx27_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX27);
+}
+
+static const char * const imx27_dt_board_compat[] __initconst = {
+	"fsl,imx27",
+	NULL
+};
+
+DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
+	.map_io		= mx27_map_io,
+	.init_early	= imx27_init_early,
+	.init_late	= imx27_pm_init,
+	.dt_compat	= imx27_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ */
+
+#include <asm/mach/arch.h>
+#include "common.h"
+
+static const char * const imx31_dt_board_compat[] __initconst = {
+	"fsl,imx31",
+	NULL
+};
+
+DT_MACHINE_START(IMX31_DT, "Freescale i.MX31 (Device Tree Support)")
+	.map_io		= mx31_map_io,
+	.init_early	= imx31_init_early,
+	.dt_compat	= imx31_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2012 Steffen Trumtrar, Pengutronix
+ *
+ * based on imx27-dt.c
+ */
+
+#include <asm/mach/arch.h>
+#include "common.h"
+#include "mx35.h"
+
+static const char * const imx35_dt_board_compat[] __initconst = {
+	"fsl,imx35",
+	NULL
+};
+
+DT_MACHINE_START(IMX35_DT, "Freescale i.MX35 (Device Tree Support)")
+	.l2c_aux_val 	= 0,
+	.l2c_aux_mask	= ~0,
+	.map_io		= mx35_map_io,
+	.init_early	= imx35_init_early,
+	.dt_compat	= imx35_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2013 Greg Ungerer <gerg@uclinux.org>
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static void __init imx50_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX50);
+}
+
+static const char * const imx50_dt_board_compat[] __initconst = {
+	"fsl,imx50",
+	NULL
+};
+
+DT_MACHINE_START(IMX50_DT, "Freescale i.MX50 (Device Tree Support)")
+	.init_early	= imx50_init_early,
+	.dt_compat	= imx50_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static void __init imx51_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX51);
+}
+
+/*
+ * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
+ * the Freescale marketing division. However this did not remove the
+ * hardware from the chip which still needs to be configured for proper
+ * IPU support.
+ */
+#define MX51_MIPI_HSC_BASE 0x83fdc000
+static void __init imx51_ipu_mipi_setup(void)
+{
+	void __iomem *hsc_addr;
+
+	hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K);
+	WARN_ON(!hsc_addr);
+
+	/* setup MIPI module to legacy mode */
+	imx_writel(0xf00, hsc_addr);
+
+	/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
+	imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800);
+
+	iounmap(hsc_addr);
+}
+
+static void __init imx51_m4if_setup(void)
+{
+	void __iomem *m4if_base;
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx51-m4if");
+	if (!np)
+		return;
+
+	m4if_base = of_iomap(np, 0);
+	of_node_put(np);
+	if (!m4if_base) {
+		pr_err("Unable to map M4IF registers\n");
+		return;
+	}
+
+	/*
+	 * Configure VPU and IPU with higher priorities
+	 * in order to avoid artifacts during video playback
+	 */
+	writel_relaxed(0x00000203, m4if_base + 0x40);
+	writel_relaxed(0x00000000, m4if_base + 0x44);
+	writel_relaxed(0x00120125, m4if_base + 0x9c);
+	writel_relaxed(0x001901A3, m4if_base + 0x48);
+	iounmap(m4if_base);
+}
+
+static void __init imx51_dt_init(void)
+{
+	imx51_ipu_mipi_setup();
+	imx_src_init();
+	imx51_m4if_setup();
+	imx5_pmu_init();
+	imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");
+}
+
+static void __init imx51_init_late(void)
+{
+	mx51_neon_fixup();
+	imx51_pm_init();
+}
+
+static const char * const imx51_dt_board_compat[] __initconst = {
+	"fsl,imx51",
+	NULL
+};
+
+DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)")
+	.init_early	= imx51_init_early,
+	.init_machine	= imx51_dt_init,
+	.init_late	= imx51_init_late,
+	.dt_compat	= imx51_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static void __init imx53_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX53);
+}
+
+static void __init imx53_dt_init(void)
+{
+	imx_src_init();
+	imx5_pmu_init();
+	imx_aips_allow_unprivileged_access("fsl,imx53-aipstz");
+}
+
+static void __init imx53_init_late(void)
+{
+	imx53_pm_init();
+}
+
+static const char * const imx53_dt_board_compat[] __initconst = {
+	"fsl,imx53",
+	NULL
+};
+
+DT_MACHINE_START(IMX53_DT, "Freescale i.MX53 (Device Tree Support)")
+	.init_early	= imx53_init_early,
+	.init_machine	= imx53_dt_init,
+	.init_late	= imx53_init_late,
+	.dt_compat	= imx53_dt_board_compat,
+MACHINE_END
@@ -0,0 +1,240 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011-2013 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+#include <linux/pci.h>
+#include <linux/phy.h>
+#include <linux/regmap.h>
+#include <linux/micrel_phy.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+/* For imx6q sabrelite board: set KSZ9021RN RGMII pad skew */
+static int ksz9021rn_phy_fixup(struct phy_device *phydev)
+{
+	if (IS_BUILTIN(CONFIG_PHYLIB)) {
+		/* min rx data delay */
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			0x8000 | MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_DATA_WRITE, 0x0000);
+
+		/* max rx/tx clock delay, min rx/tx control delay */
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			0x8000 | MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_DATA_WRITE, 0xf0f0);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW);
+	}
+
+	return 0;
+}
+
+/*
+ * fixup for PLX PEX8909 bridge to configure GPIO1-7 as output High
+ * as they are used for slots1-7 PERST#
+ */
+static void ventana_pciesw_early_fixup(struct pci_dev *dev)
+{
+	u32 dw;
+
+	if (!of_machine_is_compatible("gw,ventana"))
+		return;
+
+	if (dev->devfn != 0)
+		return;
+
+	pci_read_config_dword(dev, 0x62c, &dw);
+	dw |= 0xaaa8; // GPIO1-7 outputs
+	pci_write_config_dword(dev, 0x62c, dw);
+
+	pci_read_config_dword(dev, 0x644, &dw);
+	dw |= 0xfe;   // GPIO1-7 output high
+	pci_write_config_dword(dev, 0x644, dw);
+
+	msleep(100);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, ventana_pciesw_early_fixup);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, ventana_pciesw_early_fixup);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, ventana_pciesw_early_fixup);
+
+static void __init imx6q_enet_phy_init(void)
+{
+	if (IS_BUILTIN(CONFIG_PHYLIB)) {
+		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
+				ksz9021rn_phy_fixup);
+	}
+}
+
+static void __init imx6q_1588_init(void)
+{
+	struct device_node *np;
+	struct clk *ptp_clk, *fec_enet_ref;
+	struct clk *enet_ref;
+	struct regmap *gpr;
+	u32 clksel;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-fec");
+	if (!np) {
+		pr_warn("%s: failed to find fec node\n", __func__);
+		return;
+	}
+
+	/*
+	 * If enet_clk_ref configured, we assume DT did it properly and .
+	 * clk-imx6q.c will do needed configuration.
+	 */
+	fec_enet_ref = of_clk_get_by_name(np, "enet_clk_ref");
+	if (!IS_ERR(fec_enet_ref))
+		goto put_node;
+
+	ptp_clk = of_clk_get(np, 2);
+	if (IS_ERR(ptp_clk)) {
+		pr_warn("%s: failed to get ptp clock\n", __func__);
+		goto put_node;
+	}
+
+	enet_ref = clk_get_sys(NULL, "enet_ref");
+	if (IS_ERR(enet_ref)) {
+		pr_warn("%s: failed to get enet clock\n", __func__);
+		goto put_ptp_clk;
+	}
+
+	/*
+	 * If enet_ref from ANATOP/CCM is the PTP clock source, we need to
+	 * set bit IOMUXC_GPR1[21].  Or the PTP clock must be from pad
+	 * (external OSC), and we need to clear the bit.
+	 */
+	clksel = clk_is_match(ptp_clk, enet_ref) ?
+				IMX6Q_GPR1_ENET_CLK_SEL_ANATOP :
+				IMX6Q_GPR1_ENET_CLK_SEL_PAD;
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+	if (!IS_ERR(gpr))
+		regmap_update_bits(gpr, IOMUXC_GPR1,
+				IMX6Q_GPR1_ENET_CLK_SEL_MASK,
+				clksel);
+	else
+		pr_err("failed to find fsl,imx6q-iomuxc-gpr regmap\n");
+
+	clk_put(enet_ref);
+put_ptp_clk:
+	clk_put(ptp_clk);
+put_node:
+	of_node_put(np);
+}
+
+static void __init imx6q_axi_init(void)
+{
+	struct regmap *gpr;
+	unsigned int mask;
+
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+	if (!IS_ERR(gpr)) {
+		/*
+		 * Enable the cacheable attribute of VPU and IPU
+		 * AXI transactions.
+		 */
+		mask = IMX6Q_GPR4_VPU_WR_CACHE_SEL |
+			IMX6Q_GPR4_VPU_RD_CACHE_SEL |
+			IMX6Q_GPR4_VPU_P_WR_CACHE_VAL |
+			IMX6Q_GPR4_VPU_P_RD_CACHE_VAL_MASK |
+			IMX6Q_GPR4_IPU_WR_CACHE_CTL |
+			IMX6Q_GPR4_IPU_RD_CACHE_CTL;
+		regmap_update_bits(gpr, IOMUXC_GPR4, mask, mask);
+
+		/* Increase IPU read QoS priority */
+		regmap_update_bits(gpr, IOMUXC_GPR6,
+				IMX6Q_GPR6_IPU1_ID00_RD_QOS_MASK |
+				IMX6Q_GPR6_IPU1_ID01_RD_QOS_MASK,
+				(0xf << 16) | (0x7 << 20));
+		regmap_update_bits(gpr, IOMUXC_GPR7,
+				IMX6Q_GPR7_IPU2_ID00_RD_QOS_MASK |
+				IMX6Q_GPR7_IPU2_ID01_RD_QOS_MASK,
+				(0xf << 16) | (0x7 << 20));
+	} else {
+		pr_warn("failed to find fsl,imx6q-iomuxc-gpr regmap\n");
+	}
+}
+
+static void __init imx6q_init_machine(void)
+{
+	if (cpu_is_imx6q() && imx_get_soc_revision() >= IMX_CHIP_REVISION_2_0)
+		/*
+		 * SoCs that identify as i.MX6Q >= rev 2.0 are really i.MX6QP.
+		 * Quirk: i.MX6QP revision = i.MX6Q revision - (1, 0),
+		 * e.g. i.MX6QP rev 1.1 identifies as i.MX6Q rev 2.1.
+		 */
+		imx_print_silicon_rev("i.MX6QP", imx_get_soc_revision() - 0x10);
+	else
+		imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q",
+				imx_get_soc_revision());
+
+	imx6q_enet_phy_init();
+
+	of_platform_default_populate(NULL, NULL, NULL);
+
+	imx_anatop_init();
+	cpu_is_imx6q() ?  imx6q_pm_init() : imx6dl_pm_init();
+	imx6q_1588_init();
+	imx6q_axi_init();
+}
+
+static void __init imx6q_init_late(void)
+{
+	/*
+	 * WAIT mode is broken on imx6 Dual/Quad revision 1.0 and 1.1 so
+	 * there is no point to run cpuidle on them.
+	 *
+	 * It does work on imx6 Solo/DualLite starting from 1.1
+	 */
+	if ((cpu_is_imx6q() && imx_get_soc_revision() > IMX_CHIP_REVISION_1_1) ||
+	    (cpu_is_imx6dl() && imx_get_soc_revision() > IMX_CHIP_REVISION_1_0))
+		imx6q_cpuidle_init();
+
+	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+}
+
+static void __init imx6q_map_io(void)
+{
+	debug_ll_io_init();
+	imx_scu_map_io();
+}
+
+static void __init imx6q_init_irq(void)
+{
+	imx_gpc_check_dt();
+	imx_init_revision_from_anatop();
+	imx_init_l2cache();
+	imx_src_init();
+	irqchip_init();
+	imx6_pm_ccm_init("fsl,imx6q-ccm");
+}
+
+static const char * const imx6q_dt_compat[] __initconst = {
+	"fsl,imx6dl",
+	"fsl,imx6q",
+	"fsl,imx6qp",
+	NULL,
+};
+
+DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad/DualLite (Device Tree)")
+	.l2c_aux_val 	= 0,
+	.l2c_aux_mask	= ~0,
+	.smp		= smp_ops(imx_smp_ops),
+	.map_io		= imx6q_map_io,
+	.init_irq	= imx6q_init_irq,
+	.init_machine	= imx6q_init_machine,
+	.init_late      = imx6q_init_late,
+	.dt_compat	= imx6q_dt_compat,
+MACHINE_END
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+#include <linux/regmap.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+static void __init imx6sl_fec_init(void)
+{
+	struct regmap *gpr;
+
+	/* set FEC clock from internal PLL clock source */
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
+	if (!IS_ERR(gpr)) {
+		regmap_update_bits(gpr, IOMUXC_GPR1,
+			IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
+		regmap_update_bits(gpr, IOMUXC_GPR1,
+			IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
+	} else {
+		pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
+	}
+}
+
+static void __init imx6sl_init_late(void)
+{
+	/* imx6sl reuses imx6q cpufreq driver */
+	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+
+	if (IS_ENABLED(CONFIG_SOC_IMX6SL) && cpu_is_imx6sl())
+		imx6sl_cpuidle_init();
+	else if (IS_ENABLED(CONFIG_SOC_IMX6SLL))
+		imx6sx_cpuidle_init();
+}
+
+static void __init imx6sl_init_machine(void)
+{
+	of_platform_default_populate(NULL, NULL, NULL);
+
+	if (cpu_is_imx6sl())
+		imx6sl_fec_init();
+	imx_anatop_init();
+	imx6sl_pm_init();
+}
+
+static void __init imx6sl_init_irq(void)
+{
+	imx_gpc_check_dt();
+	imx_init_revision_from_anatop();
+	imx_init_l2cache();
+	imx_src_init();
+	irqchip_init();
+	if (cpu_is_imx6sl())
+		imx6_pm_ccm_init("fsl,imx6sl-ccm");
+	else
+		imx6_pm_ccm_init("fsl,imx6sll-ccm");
+}
+
+static const char * const imx6sl_dt_compat[] __initconst = {
+	"fsl,imx6sl",
+	"fsl,imx6sll",
+	NULL,
+};
+
+DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
+	.l2c_aux_val 	= 0,
+	.l2c_aux_mask	= ~0,
+	.init_irq	= imx6sl_init_irq,
+	.init_machine	= imx6sl_init_machine,
+	.init_late      = imx6sl_init_late,
+	.dt_compat	= imx6sl_dt_compat,
+MACHINE_END
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "cpuidle.h"
+
+static void __init imx6sx_init_machine(void)
+{
+	of_platform_default_populate(NULL, NULL, NULL);
+
+	imx_anatop_init();
+	imx6sx_pm_init();
+}
+
+static void __init imx6sx_init_irq(void)
+{
+	imx_gpc_check_dt();
+	imx_init_revision_from_anatop();
+	imx_init_l2cache();
+	imx_src_init();
+	irqchip_init();
+	imx6_pm_ccm_init("fsl,imx6sx-ccm");
+}
+
+static void __init imx6sx_init_late(void)
+{
+	imx6sx_cpuidle_init();
+
+	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+}
+
+static const char * const imx6sx_dt_compat[] __initconst = {
+	"fsl,imx6sx",
+	NULL,
+};
+
+DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
+	.l2c_aux_val 	= 0,
+	.l2c_aux_mask	= ~0,
+	.init_irq	= imx6sx_init_irq,
+	.init_machine	= imx6sx_init_machine,
+	.dt_compat	= imx6sx_dt_compat,
+	.init_late	= imx6sx_init_late,
+MACHINE_END
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ */
+#include <linux/irqchip.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+static void __init imx6ul_init_machine(void)
+{
+	imx_print_silicon_rev(cpu_is_imx6ull() ? "i.MX6ULL" : "i.MX6UL",
+		imx_get_soc_revision());
+
+	of_platform_default_populate(NULL, NULL, NULL);
+	imx_anatop_init();
+	imx6ul_pm_init();
+}
+
+static void __init imx6ul_init_irq(void)
+{
+	imx_init_revision_from_anatop();
+	imx_src_init();
+	irqchip_init();
+	imx6_pm_ccm_init("fsl,imx6ul-ccm");
+}
+
+static void __init imx6ul_init_late(void)
+{
+	imx6sx_cpuidle_init();
+
+	if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
+		platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
+}
+
+static const char * const imx6ul_dt_compat[] __initconst = {
+	"fsl,imx6ul",
+	"fsl,imx6ull",
+	"fsl,imx6ulz",
+	NULL,
+};
+
+DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)")
+	.init_irq	= imx6ul_init_irq,
+	.init_machine	= imx6ul_init_machine,
+	.init_late	= imx6ul_init_late,
+	.dt_compat	= imx6ul_dt_compat,
+MACHINE_END
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Pengutronix, Oleksij Rempel <o.rempel@pengutronix.de>
+ */
+
+#include <linux/kernel.h>
+#include <asm/v7m.h>
+#include <asm/mach/arch.h>
+
+static const char * const imx7d_cm4_dt_compat[] __initconst = {
+	"fsl,imx7d-cm4",
+	NULL,
+};
+
+DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual Cortex-M4 (Device Tree)")
+	.dt_compat = imx7d_cm4_dt_compat,
+	.restart = armv7m_restart,
+MACHINE_END
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ */
+#include <linux/irqchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/imx7-iomuxc-gpr.h>
+#include <linux/platform_device.h>
+#include <linux/phy.h>
+#include <linux/regmap.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+
+static int bcm54220_phy_fixup(struct phy_device *dev)
+{
+	/* enable RXC skew select RGMII copper mode */
+	phy_write(dev, 0x1e, 0x21);
+	phy_write(dev, 0x1f, 0x7ea8);
+	phy_write(dev, 0x1e, 0x2f);
+	phy_write(dev, 0x1f, 0x71b7);
+
+	return 0;
+}
+
+#define PHY_ID_BCM54220	0x600d8589
+
+static void __init imx7d_enet_phy_init(void)
+{
+	if (IS_BUILTIN(CONFIG_PHYLIB)) {
+		phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
+					   bcm54220_phy_fixup);
+	}
+}
+
+static void __init imx7d_enet_clk_sel(void)
+{
+	struct regmap *gpr;
+
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");
+	if (!IS_ERR(gpr)) {
+		regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);
+		regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);
+	} else {
+		pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
+	}
+}
+
+static void __init imx7d_enet_init(void)
+{
+	imx7d_enet_phy_init();
+	imx7d_enet_clk_sel();
+}
+
+static void __init imx7d_init_machine(void)
+{
+	imx_anatop_init();
+	imx7d_enet_init();
+}
+
+static void __init imx7d_init_late(void)
+{
+	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
+		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
+}
+
+static void __init imx7d_init_irq(void)
+{
+	imx_init_revision_from_anatop();
+	imx7_src_init();
+	irqchip_init();
+}
+
+static const char *const imx7d_dt_compat[] __initconst = {
+	"fsl,imx7d",
+	"fsl,imx7s",
+	NULL,
+};
+
+DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
+	.smp            = smp_ops(imx7_smp_ops),
+	.init_irq	= imx7d_init_irq,
+	.init_machine	= imx7d_init_machine,
+	.init_late      = imx7d_init_late,
+	.dt_compat	= imx7d_dt_compat,
+MACHINE_END
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017-2018 NXP
+ *   Author: Dong Aisheng <aisheng.dong@nxp.com>
+ */
+
+#include <linux/irqchip.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_platform.h>
+#include <linux/regmap.h>
+#include <asm/mach/arch.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+#define SIM_JTAG_ID_REG		0x8c
+
+static void __init imx7ulp_set_revision(void)
+{
+	struct regmap *sim;
+	u32 revision;
+
+	sim = syscon_regmap_lookup_by_compatible("fsl,imx7ulp-sim");
+	if (IS_ERR(sim)) {
+		pr_warn("failed to find fsl,imx7ulp-sim regmap!\n");
+		return;
+	}
+
+	if (regmap_read(sim, SIM_JTAG_ID_REG, &revision)) {
+		pr_warn("failed to read sim regmap!\n");
+		return;
+	}
+
+	/*
+	 * bit[31:28] of JTAG_ID register defines revision as below from B0:
+	 * 0001        B0
+	 * 0010        B1
+	 * 0011        B2
+	 */
+	switch (revision >> 28) {
+	case 1:
+		imx_set_soc_revision(IMX_CHIP_REVISION_2_0);
+		break;
+	case 2:
+		imx_set_soc_revision(IMX_CHIP_REVISION_2_1);
+		break;
+	case 3:
+		imx_set_soc_revision(IMX_CHIP_REVISION_2_2);
+		break;
+	default:
+		imx_set_soc_revision(IMX_CHIP_REVISION_1_0);
+		break;
+	}
+}
+
+static void __init imx7ulp_init_machine(void)
+{
+	imx7ulp_pm_init();
+
+	mxc_set_cpu_type(MXC_CPU_IMX7ULP);
+	imx7ulp_set_revision();
+	of_platform_default_populate(NULL, NULL, NULL);
+}
+
+static const char *const imx7ulp_dt_compat[] __initconst = {
+	"fsl,imx7ulp",
+	NULL,
+};
+
+static void __init imx7ulp_init_late(void)
+{
+	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
+		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
+
+	imx7ulp_cpuidle_init();
+}
+
+DT_MACHINE_START(IMX7ulp, "Freescale i.MX7ULP (Device Tree)")
+	.init_machine	= imx7ulp_init_machine,
+	.dt_compat	= imx7ulp_dt_compat,
+	.init_late	= imx7ulp_init_late,
+MACHINE_END
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019
+ * Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
+ */
+
+#include <linux/kernel.h>
+#include <asm/mach/arch.h>
+#include <asm/v7m.h>
+
+static const char *const imxrt_compat[] __initconst = {
+	"fsl,imxrt1050",
+	NULL
+};
+
+DT_MACHINE_START(IMXRTDT, "IMXRT (Device Tree Support)")
+	.dt_compat = imxrt_compat,
+	.restart = armv7m_restart,
+MACHINE_END
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ */
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+
+static const char * const ls1021a_dt_compat[] __initconst = {
+	"fsl,ls1021a",
+	NULL,
+};
+
+DT_MACHINE_START(LS1021A, "Freescale LS1021A")
+	.smp		= smp_ops(ls1021a_smp_ops),
+	.dt_compat	= ls1021a_dt_compat,
+MACHINE_END
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2012-2013 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+
+#include <linux/irqchip.h>
+#include <asm/mach/arch.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "common.h"
+#include "hardware.h"
+
+#define MSCM_CPxCOUNT		0x00c
+#define MSCM_CPxCFG1		0x014
+
+static void __init vf610_detect_cpu(void)
+{
+	struct device_node *np;
+	u32 cpxcount, cpxcfg1;
+	unsigned int cpu_type;
+	void __iomem *mscm;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,vf610-mscm-cpucfg");
+	if (WARN_ON(!np))
+		return;
+
+	mscm = of_iomap(np, 0);
+	of_node_put(np);
+
+	if (WARN_ON(!mscm))
+		return;
+
+	cpxcount = readl_relaxed(mscm + MSCM_CPxCOUNT);
+	cpxcfg1  = readl_relaxed(mscm + MSCM_CPxCFG1);
+
+	iounmap(mscm);
+
+	cpu_type = cpxcount ? MXC_CPU_VF600 : MXC_CPU_VF500;
+
+	if (cpxcfg1)
+		cpu_type |= MXC_CPU_VFx10;
+
+	mxc_set_cpu_type(cpu_type);
+}
+
+static void __init vf610_init_machine(void)
+{
+	vf610_detect_cpu();
+
+	of_platform_default_populate(NULL, NULL, NULL);
+}
+
+static const char * const vf610_dt_compat[] __initconst = {
+	"fsl,vf500",
+	"fsl,vf510",
+	"fsl,vf600",
+	"fsl,vf610",
+	"fsl,vf610m4",
+	NULL,
+};
+
+DT_MACHINE_START(VYBRID_VF610, "Freescale Vybrid VF5xx/VF6xx (Device Tree)")
+	.l2c_aux_val	= 0,
+	.l2c_aux_mask	= ~0,
+	.init_machine   = vf610_init_machine,
+	.dt_compat	= vf610_dt_compat,
+MACHINE_END
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (C) 1999,2000 Arm Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *    - add MX31 specific definitions
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+
+#include <asm/system_misc.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+#include "crmregs-imx3.h"
+#include "hardware.h"
+
+void __iomem *mx3_ccm_base;
+
+static void imx3_idle(void)
+{
+	unsigned long reg = 0;
+
+	__asm__ __volatile__(
+		/* disable I and D cache */
+		"mrc p15, 0, %0, c1, c0, 0\n"
+		"bic %0, %0, #0x00001000\n"
+		"bic %0, %0, #0x00000004\n"
+		"mcr p15, 0, %0, c1, c0, 0\n"
+		/* invalidate I cache */
+		"mov %0, #0\n"
+		"mcr p15, 0, %0, c7, c5, 0\n"
+		/* clear and invalidate D cache */
+		"mov %0, #0\n"
+		"mcr p15, 0, %0, c7, c14, 0\n"
+		/* WFI */
+		"mov %0, #0\n"
+		"mcr p15, 0, %0, c7, c0, 4\n"
+		"nop\n" "nop\n" "nop\n" "nop\n"
+		"nop\n" "nop\n" "nop\n"
+		/* enable I and D cache */
+		"mrc p15, 0, %0, c1, c0, 0\n"
+		"orr %0, %0, #0x00001000\n"
+		"orr %0, %0, #0x00000004\n"
+		"mcr p15, 0, %0, c1, c0, 0\n"
+		: "=r" (reg));
+}
+
+static void __iomem *imx3_ioremap_caller(phys_addr_t phys_addr, size_t size,
+					 unsigned int mtype, void *caller)
+{
+	if (mtype == MT_DEVICE) {
+		/*
+		 * Access all peripherals below 0x80000000 as nonshared device
+		 * on mx3, but leave l2cc alone.  Otherwise cache corruptions
+		 * can occur.
+		 */
+		if (phys_addr < 0x80000000 &&
+				!addr_in_module(phys_addr, MX3x_L2CC))
+			mtype = MT_DEVICE_NONSHARED;
+	}
+
+	return __arm_ioremap_caller(phys_addr, size, mtype, caller);
+}
+
+#ifdef CONFIG_SOC_IMX31
+static struct map_desc mx31_io_desc[] __initdata = {
+	imx_map_entry(MX31, X_MEMC, MT_DEVICE),
+	imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
+};
+
+/*
+ * This function initializes the memory map. It is called during the
+ * system startup to create static physical to virtual memory mappings
+ * for the IO modules.
+ */
+void __init mx31_map_io(void)
+{
+	iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
+}
+
+static void imx31_idle(void)
+{
+	int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
+	reg &= ~MXC_CCM_CCMR_LPM_MASK;
+	imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
+
+	imx3_idle();
+}
+
+void __init imx31_init_early(void)
+{
+	struct device_node *np;
+
+	mxc_set_cpu_type(MXC_CPU_MX31);
+	arch_ioremap_caller = imx3_ioremap_caller;
+	arm_pm_idle = imx31_idle;
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx31-ccm");
+	mx3_ccm_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!mx3_ccm_base);
+}
+#endif /* ifdef CONFIG_SOC_IMX31 */
+
+#ifdef CONFIG_SOC_IMX35
+static struct map_desc mx35_io_desc[] __initdata = {
+	imx_map_entry(MX35, X_MEMC, MT_DEVICE),
+	imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
+	imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
+};
+
+void __init mx35_map_io(void)
+{
+	iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
+}
+
+static void imx35_idle(void)
+{
+	int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
+	reg &= ~MXC_CCM_CCMR_LPM_MASK;
+	reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
+	imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
+
+	imx3_idle();
+}
+
+void __init imx35_init_early(void)
+{
+	struct device_node *np;
+
+	mxc_set_cpu_type(MXC_CPU_MX35);
+	arm_pm_idle = imx35_idle;
+	arch_ioremap_caller = imx3_ioremap_caller;
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx35-ccm");
+	mx3_ccm_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!mx3_ccm_base);
+}
+#endif /* ifdef CONFIG_SOC_IMX35 */
@@ -0,0 +1,605 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2017 NXP
+ * Copyright 2011,2016 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/hrtimer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/perf_event.h>
+#include <linux/slab.h>
+
+#include "common.h"
+
+#define MMDC_MAPSR		0x404
+#define BP_MMDC_MAPSR_PSD	0
+#define BP_MMDC_MAPSR_PSS	4
+
+#define MMDC_MDMISC		0x18
+#define BM_MMDC_MDMISC_DDR_TYPE	0x18
+#define BP_MMDC_MDMISC_DDR_TYPE	0x3
+
+#define TOTAL_CYCLES		0x0
+#define BUSY_CYCLES		0x1
+#define READ_ACCESSES		0x2
+#define WRITE_ACCESSES		0x3
+#define READ_BYTES		0x4
+#define WRITE_BYTES		0x5
+
+/* Enables, resets, freezes, overflow profiling*/
+#define DBG_DIS			0x0
+#define DBG_EN			0x1
+#define DBG_RST			0x2
+#define PRF_FRZ			0x4
+#define CYC_OVF			0x8
+#define PROFILE_SEL		0x10
+
+#define MMDC_MADPCR0	0x410
+#define MMDC_MADPCR1	0x414
+#define MMDC_MADPSR0	0x418
+#define MMDC_MADPSR1	0x41C
+#define MMDC_MADPSR2	0x420
+#define MMDC_MADPSR3	0x424
+#define MMDC_MADPSR4	0x428
+#define MMDC_MADPSR5	0x42C
+
+#define MMDC_NUM_COUNTERS	6
+
+#define MMDC_FLAG_PROFILE_SEL	0x1
+#define MMDC_PRF_AXI_ID_CLEAR	0x0
+
+#define to_mmdc_pmu(p) container_of(p, struct mmdc_pmu, pmu)
+
+static int ddr_type;
+
+struct fsl_mmdc_devtype_data {
+	unsigned int flags;
+};
+
+static const struct fsl_mmdc_devtype_data imx6q_data = {
+};
+
+static const struct fsl_mmdc_devtype_data imx6qp_data = {
+	.flags = MMDC_FLAG_PROFILE_SEL,
+};
+
+static const struct of_device_id imx_mmdc_dt_ids[] = {
+	{ .compatible = "fsl,imx6q-mmdc", .data = (void *)&imx6q_data},
+	{ .compatible = "fsl,imx6qp-mmdc", .data = (void *)&imx6qp_data},
+	{ /* sentinel */ }
+};
+
+#ifdef CONFIG_PERF_EVENTS
+
+static enum cpuhp_state cpuhp_mmdc_state;
+static DEFINE_IDA(mmdc_ida);
+
+PMU_EVENT_ATTR_STRING(total-cycles, mmdc_pmu_total_cycles, "event=0x00")
+PMU_EVENT_ATTR_STRING(busy-cycles, mmdc_pmu_busy_cycles, "event=0x01")
+PMU_EVENT_ATTR_STRING(read-accesses, mmdc_pmu_read_accesses, "event=0x02")
+PMU_EVENT_ATTR_STRING(write-accesses, mmdc_pmu_write_accesses, "event=0x03")
+PMU_EVENT_ATTR_STRING(read-bytes, mmdc_pmu_read_bytes, "event=0x04")
+PMU_EVENT_ATTR_STRING(read-bytes.unit, mmdc_pmu_read_bytes_unit, "MB");
+PMU_EVENT_ATTR_STRING(read-bytes.scale, mmdc_pmu_read_bytes_scale, "0.000001");
+PMU_EVENT_ATTR_STRING(write-bytes, mmdc_pmu_write_bytes, "event=0x05")
+PMU_EVENT_ATTR_STRING(write-bytes.unit, mmdc_pmu_write_bytes_unit, "MB");
+PMU_EVENT_ATTR_STRING(write-bytes.scale, mmdc_pmu_write_bytes_scale, "0.000001");
+
+struct mmdc_pmu {
+	struct pmu pmu;
+	void __iomem *mmdc_base;
+	cpumask_t cpu;
+	struct hrtimer hrtimer;
+	unsigned int active_events;
+	int id;
+	struct device *dev;
+	struct perf_event *mmdc_events[MMDC_NUM_COUNTERS];
+	struct hlist_node node;
+	const struct fsl_mmdc_devtype_data *devtype_data;
+	struct clk *mmdc_ipg_clk;
+};
+
+/*
+ * Polling period is set to one second, overflow of total-cycles (the fastest
+ * increasing counter) takes ten seconds so one second is safe
+ */
+static unsigned int mmdc_pmu_poll_period_us = 1000000;
+
+module_param_named(pmu_pmu_poll_period_us, mmdc_pmu_poll_period_us, uint,
+		S_IRUGO | S_IWUSR);
+
+static ktime_t mmdc_pmu_timer_period(void)
+{
+	return ns_to_ktime((u64)mmdc_pmu_poll_period_us * 1000);
+}
+
+static ssize_t mmdc_pmu_cpumask_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct mmdc_pmu *pmu_mmdc = dev_get_drvdata(dev);
+
+	return cpumap_print_to_pagebuf(true, buf, &pmu_mmdc->cpu);
+}
+
+static struct device_attribute mmdc_pmu_cpumask_attr =
+	__ATTR(cpumask, S_IRUGO, mmdc_pmu_cpumask_show, NULL);
+
+static struct attribute *mmdc_pmu_cpumask_attrs[] = {
+	&mmdc_pmu_cpumask_attr.attr,
+	NULL,
+};
+
+static struct attribute_group mmdc_pmu_cpumask_attr_group = {
+	.attrs = mmdc_pmu_cpumask_attrs,
+};
+
+static struct attribute *mmdc_pmu_events_attrs[] = {
+	&mmdc_pmu_total_cycles.attr.attr,
+	&mmdc_pmu_busy_cycles.attr.attr,
+	&mmdc_pmu_read_accesses.attr.attr,
+	&mmdc_pmu_write_accesses.attr.attr,
+	&mmdc_pmu_read_bytes.attr.attr,
+	&mmdc_pmu_read_bytes_unit.attr.attr,
+	&mmdc_pmu_read_bytes_scale.attr.attr,
+	&mmdc_pmu_write_bytes.attr.attr,
+	&mmdc_pmu_write_bytes_unit.attr.attr,
+	&mmdc_pmu_write_bytes_scale.attr.attr,
+	NULL,
+};
+
+static struct attribute_group mmdc_pmu_events_attr_group = {
+	.name = "events",
+	.attrs = mmdc_pmu_events_attrs,
+};
+
+PMU_FORMAT_ATTR(event, "config:0-63");
+PMU_FORMAT_ATTR(axi_id, "config1:0-63");
+
+static struct attribute *mmdc_pmu_format_attrs[] = {
+	&format_attr_event.attr,
+	&format_attr_axi_id.attr,
+	NULL,
+};
+
+static struct attribute_group mmdc_pmu_format_attr_group = {
+	.name = "format",
+	.attrs = mmdc_pmu_format_attrs,
+};
+
+static const struct attribute_group *attr_groups[] = {
+	&mmdc_pmu_events_attr_group,
+	&mmdc_pmu_format_attr_group,
+	&mmdc_pmu_cpumask_attr_group,
+	NULL,
+};
+
+static u32 mmdc_pmu_read_counter(struct mmdc_pmu *pmu_mmdc, int cfg)
+{
+	void __iomem *mmdc_base, *reg;
+
+	mmdc_base = pmu_mmdc->mmdc_base;
+
+	switch (cfg) {
+	case TOTAL_CYCLES:
+		reg = mmdc_base + MMDC_MADPSR0;
+		break;
+	case BUSY_CYCLES:
+		reg = mmdc_base + MMDC_MADPSR1;
+		break;
+	case READ_ACCESSES:
+		reg = mmdc_base + MMDC_MADPSR2;
+		break;
+	case WRITE_ACCESSES:
+		reg = mmdc_base + MMDC_MADPSR3;
+		break;
+	case READ_BYTES:
+		reg = mmdc_base + MMDC_MADPSR4;
+		break;
+	case WRITE_BYTES:
+		reg = mmdc_base + MMDC_MADPSR5;
+		break;
+	default:
+		return WARN_ONCE(1,
+			"invalid configuration %d for mmdc counter", cfg);
+	}
+	return readl(reg);
+}
+
+static int mmdc_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
+{
+	struct mmdc_pmu *pmu_mmdc = hlist_entry_safe(node, struct mmdc_pmu, node);
+	int target;
+
+	if (!cpumask_test_and_clear_cpu(cpu, &pmu_mmdc->cpu))
+		return 0;
+
+	target = cpumask_any_but(cpu_online_mask, cpu);
+	if (target >= nr_cpu_ids)
+		return 0;
+
+	perf_pmu_migrate_context(&pmu_mmdc->pmu, cpu, target);
+	cpumask_set_cpu(target, &pmu_mmdc->cpu);
+
+	return 0;
+}
+
+static bool mmdc_pmu_group_event_is_valid(struct perf_event *event,
+					  struct pmu *pmu,
+					  unsigned long *used_counters)
+{
+	int cfg = event->attr.config;
+
+	if (is_software_event(event))
+		return true;
+
+	if (event->pmu != pmu)
+		return false;
+
+	return !test_and_set_bit(cfg, used_counters);
+}
+
+/*
+ * Each event has a single fixed-purpose counter, so we can only have a
+ * single active event for each at any point in time. Here we just check
+ * for duplicates, and rely on mmdc_pmu_event_init to verify that the HW
+ * event numbers are valid.
+ */
+static bool mmdc_pmu_group_is_valid(struct perf_event *event)
+{
+	struct pmu *pmu = event->pmu;
+	struct perf_event *leader = event->group_leader;
+	struct perf_event *sibling;
+	unsigned long counter_mask = 0;
+
+	set_bit(leader->attr.config, &counter_mask);
+
+	if (event != leader) {
+		if (!mmdc_pmu_group_event_is_valid(event, pmu, &counter_mask))
+			return false;
+	}
+
+	for_each_sibling_event(sibling, leader) {
+		if (!mmdc_pmu_group_event_is_valid(sibling, pmu, &counter_mask))
+			return false;
+	}
+
+	return true;
+}
+
+static int mmdc_pmu_event_init(struct perf_event *event)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	int cfg = event->attr.config;
+
+	if (event->attr.type != event->pmu->type)
+		return -ENOENT;
+
+	if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
+		return -EOPNOTSUPP;
+
+	if (event->cpu < 0) {
+		dev_warn(pmu_mmdc->dev, "Can't provide per-task data!\n");
+		return -EOPNOTSUPP;
+	}
+
+	if (event->attr.sample_period)
+		return -EINVAL;
+
+	if (cfg < 0 || cfg >= MMDC_NUM_COUNTERS)
+		return -EINVAL;
+
+	if (!mmdc_pmu_group_is_valid(event))
+		return -EINVAL;
+
+	event->cpu = cpumask_first(&pmu_mmdc->cpu);
+	return 0;
+}
+
+static void mmdc_pmu_event_update(struct perf_event *event)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	u64 delta, prev_raw_count, new_raw_count;
+
+	do {
+		prev_raw_count = local64_read(&hwc->prev_count);
+		new_raw_count = mmdc_pmu_read_counter(pmu_mmdc,
+						      event->attr.config);
+	} while (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
+		new_raw_count) != prev_raw_count);
+
+	delta = (new_raw_count - prev_raw_count) & 0xFFFFFFFF;
+
+	local64_add(delta, &event->count);
+}
+
+static void mmdc_pmu_event_start(struct perf_event *event, int flags)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+	void __iomem *mmdc_base, *reg;
+	u32 val;
+
+	mmdc_base = pmu_mmdc->mmdc_base;
+	reg = mmdc_base + MMDC_MADPCR0;
+
+	/*
+	 * hrtimer is required because mmdc does not provide an interrupt so
+	 * polling is necessary
+	 */
+	hrtimer_start(&pmu_mmdc->hrtimer, mmdc_pmu_timer_period(),
+			HRTIMER_MODE_REL_PINNED);
+
+	local64_set(&hwc->prev_count, 0);
+
+	writel(DBG_RST, reg);
+
+	/*
+	 * Write the AXI id parameter to MADPCR1.
+	 */
+	val = event->attr.config1;
+	reg = mmdc_base + MMDC_MADPCR1;
+	writel(val, reg);
+
+	reg = mmdc_base + MMDC_MADPCR0;
+	val = DBG_EN;
+	if (pmu_mmdc->devtype_data->flags & MMDC_FLAG_PROFILE_SEL)
+		val |= PROFILE_SEL;
+
+	writel(val, reg);
+}
+
+static int mmdc_pmu_event_add(struct perf_event *event, int flags)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	struct hw_perf_event *hwc = &event->hw;
+
+	int cfg = event->attr.config;
+
+	if (flags & PERF_EF_START)
+		mmdc_pmu_event_start(event, flags);
+
+	if (pmu_mmdc->mmdc_events[cfg] != NULL)
+		return -EAGAIN;
+
+	pmu_mmdc->mmdc_events[cfg] = event;
+	pmu_mmdc->active_events++;
+
+	local64_set(&hwc->prev_count, mmdc_pmu_read_counter(pmu_mmdc, cfg));
+
+	return 0;
+}
+
+static void mmdc_pmu_event_stop(struct perf_event *event, int flags)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	void __iomem *mmdc_base, *reg;
+
+	mmdc_base = pmu_mmdc->mmdc_base;
+	reg = mmdc_base + MMDC_MADPCR0;
+
+	writel(PRF_FRZ, reg);
+
+	reg = mmdc_base + MMDC_MADPCR1;
+	writel(MMDC_PRF_AXI_ID_CLEAR, reg);
+
+	mmdc_pmu_event_update(event);
+}
+
+static void mmdc_pmu_event_del(struct perf_event *event, int flags)
+{
+	struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
+	int cfg = event->attr.config;
+
+	pmu_mmdc->mmdc_events[cfg] = NULL;
+	pmu_mmdc->active_events--;
+
+	if (pmu_mmdc->active_events == 0)
+		hrtimer_cancel(&pmu_mmdc->hrtimer);
+
+	mmdc_pmu_event_stop(event, PERF_EF_UPDATE);
+}
+
+static void mmdc_pmu_overflow_handler(struct mmdc_pmu *pmu_mmdc)
+{
+	int i;
+
+	for (i = 0; i < MMDC_NUM_COUNTERS; i++) {
+		struct perf_event *event = pmu_mmdc->mmdc_events[i];
+
+		if (event)
+			mmdc_pmu_event_update(event);
+	}
+}
+
+static enum hrtimer_restart mmdc_pmu_timer_handler(struct hrtimer *hrtimer)
+{
+	struct mmdc_pmu *pmu_mmdc = container_of(hrtimer, struct mmdc_pmu,
+			hrtimer);
+
+	mmdc_pmu_overflow_handler(pmu_mmdc);
+	hrtimer_forward_now(hrtimer, mmdc_pmu_timer_period());
+
+	return HRTIMER_RESTART;
+}
+
+static int mmdc_pmu_init(struct mmdc_pmu *pmu_mmdc,
+		void __iomem *mmdc_base, struct device *dev)
+{
+	*pmu_mmdc = (struct mmdc_pmu) {
+		.pmu = (struct pmu) {
+			.parent		= dev,
+			.task_ctx_nr    = perf_invalid_context,
+			.attr_groups    = attr_groups,
+			.event_init     = mmdc_pmu_event_init,
+			.add            = mmdc_pmu_event_add,
+			.del            = mmdc_pmu_event_del,
+			.start          = mmdc_pmu_event_start,
+			.stop           = mmdc_pmu_event_stop,
+			.read           = mmdc_pmu_event_update,
+			.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
+		},
+		.mmdc_base = mmdc_base,
+		.dev = dev,
+		.active_events = 0,
+	};
+
+	pmu_mmdc->id = ida_alloc(&mmdc_ida, GFP_KERNEL);
+
+	return pmu_mmdc->id;
+}
+
+static void imx_mmdc_remove(struct platform_device *pdev)
+{
+	struct mmdc_pmu *pmu_mmdc = platform_get_drvdata(pdev);
+
+	ida_free(&mmdc_ida, pmu_mmdc->id);
+	cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
+	perf_pmu_unregister(&pmu_mmdc->pmu);
+	iounmap(pmu_mmdc->mmdc_base);
+	clk_disable_unprepare(pmu_mmdc->mmdc_ipg_clk);
+	kfree(pmu_mmdc);
+}
+
+static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_base,
+			      struct clk *mmdc_ipg_clk)
+{
+	struct mmdc_pmu *pmu_mmdc;
+	char *name;
+	int ret;
+
+	pmu_mmdc = kzalloc_obj(*pmu_mmdc);
+	if (!pmu_mmdc) {
+		pr_err("failed to allocate PMU device!\n");
+		return -ENOMEM;
+	}
+
+	/* The first instance registers the hotplug state */
+	if (!cpuhp_mmdc_state) {
+		ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
+					      "perf/arm/mmdc:online", NULL,
+					      mmdc_pmu_offline_cpu);
+		if (ret < 0) {
+			pr_err("cpuhp_setup_state_multi failed\n");
+			goto pmu_free;
+		}
+		cpuhp_mmdc_state = ret;
+	}
+
+	ret = mmdc_pmu_init(pmu_mmdc, mmdc_base, &pdev->dev);
+	if (ret < 0)
+		goto  pmu_free;
+
+	name = devm_kasprintf(&pdev->dev,
+				GFP_KERNEL, "mmdc%d", ret);
+	if (!name) {
+		ret = -ENOMEM;
+		goto pmu_release_id;
+	}
+
+	pmu_mmdc->mmdc_ipg_clk = mmdc_ipg_clk;
+	pmu_mmdc->devtype_data = device_get_match_data(&pdev->dev);
+
+	hrtimer_setup(&pmu_mmdc->hrtimer, mmdc_pmu_timer_handler, CLOCK_MONOTONIC,
+		      HRTIMER_MODE_REL);
+
+	cpumask_set_cpu(raw_smp_processor_id(), &pmu_mmdc->cpu);
+
+	/* Register the pmu instance for cpu hotplug */
+	cpuhp_state_add_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
+
+	ret = perf_pmu_register(&(pmu_mmdc->pmu), name, -1);
+	if (ret)
+		goto pmu_register_err;
+
+	platform_set_drvdata(pdev, pmu_mmdc);
+	return 0;
+
+pmu_register_err:
+	pr_warn("MMDC Perf PMU failed (%d), disabled\n", ret);
+	cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
+	hrtimer_cancel(&pmu_mmdc->hrtimer);
+pmu_release_id:
+	ida_free(&mmdc_ida, pmu_mmdc->id);
+pmu_free:
+	kfree(pmu_mmdc);
+	return ret;
+}
+
+#else
+#define imx_mmdc_remove NULL
+#define imx_mmdc_perf_init(pdev, mmdc_base, mmdc_ipg_clk) 0
+#endif
+
+static int imx_mmdc_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	void __iomem *mmdc_base, *reg;
+	struct clk *mmdc_ipg_clk;
+	u32 val;
+	int err;
+
+	/* the ipg clock is optional */
+	mmdc_ipg_clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(mmdc_ipg_clk))
+		mmdc_ipg_clk = NULL;
+
+	err = clk_prepare_enable(mmdc_ipg_clk);
+	if (err) {
+		dev_err(&pdev->dev, "Unable to enable mmdc ipg clock.\n");
+		return err;
+	}
+
+	mmdc_base = of_iomap(np, 0);
+	WARN_ON(!mmdc_base);
+
+	reg = mmdc_base + MMDC_MDMISC;
+	/* Get ddr type */
+	val = readl_relaxed(reg);
+	ddr_type = (val & BM_MMDC_MDMISC_DDR_TYPE) >>
+		 BP_MMDC_MDMISC_DDR_TYPE;
+
+	reg = mmdc_base + MMDC_MAPSR;
+
+	/* Enable automatic power saving */
+	val = readl_relaxed(reg);
+	val &= ~(1 << BP_MMDC_MAPSR_PSD);
+	writel_relaxed(val, reg);
+
+	err = imx_mmdc_perf_init(pdev, mmdc_base, mmdc_ipg_clk);
+	if (err) {
+		iounmap(mmdc_base);
+		clk_disable_unprepare(mmdc_ipg_clk);
+	}
+
+	return err;
+}
+
+int imx_mmdc_get_ddr_type(void)
+{
+	return ddr_type;
+}
+
+static struct platform_driver imx_mmdc_driver = {
+	.driver		= {
+		.name	= "imx-mmdc",
+		.of_match_table = imx_mmdc_dt_ids,
+	},
+	.probe		= imx_mmdc_probe,
+	.remove		= imx_mmdc_remove,
+};
+
+static int __init imx_mmdc_init(void)
+{
+	return platform_driver_register(&imx_mmdc_driver);
+}
+postcore_initcall(imx_mmdc_init);
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * This contains i.MX27-specific hardware definitions. For those
+ * hardware pieces that are common between i.MX21 and i.MX27, have a
+ * look at mx2x.h.
+ */
+
+#ifndef __MACH_MX27_H__
+#define __MACH_MX27_H__
+
+#define MX27_AIPI_BASE_ADDR		0x10000000
+#define MX27_AIPI_SIZE			SZ_1M
+
+#define MX27_SAHB1_BASE_ADDR		0x80000000
+#define MX27_SAHB1_SIZE			SZ_1M
+
+#define MX27_X_MEMC_BASE_ADDR		0xd8000000
+#define MX27_X_MEMC_SIZE		SZ_1M
+
+#define MX27_IO_P2V(x)			IMX_IO_P2V(x)
+
+#endif /* ifndef __MACH_MX27_H__ */
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * This contains hardware definitions that are common between i.MX21 and
+ * i.MX27.
+ */
+
+#ifndef __MACH_MX2x_H__
+#define __MACH_MX2x_H__
+
+/* The following addresses are common between i.MX21 and i.MX27 */
+
+/* Register offsets */
+#define MX2x_AIPI_BASE_ADDR		0x10000000
+#define MX2x_AIPI_SIZE			SZ_1M
+#define MX2x_DMA_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x01000)
+#define MX2x_WDOG_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x02000)
+#define MX2x_GPT1_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x03000)
+#define MX2x_GPT2_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x04000)
+#define MX2x_GPT3_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x05000)
+#define MX2x_PWM_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x06000)
+#define MX2x_RTC_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x07000)
+#define MX2x_KPP_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x08000)
+#define MX2x_OWIRE_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x09000)
+#define MX2x_UART1_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0a000)
+#define MX2x_UART2_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0b000)
+#define MX2x_UART3_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0c000)
+#define MX2x_UART4_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0d000)
+#define MX2x_CSPI1_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0e000)
+#define MX2x_CSPI2_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x0f000)
+#define MX2x_SSI1_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x10000)
+#define MX2x_SSI2_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x11000)
+#define MX2x_I2C_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x12000)
+#define MX2x_SDHC1_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x13000)
+#define MX2x_SDHC2_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x14000)
+#define MX2x_GPIO_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x15000)
+#define MX2x_AUDMUX_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x16000)
+#define MX2x_CSPI3_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x17000)
+#define MX2x_LCDC_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x21000)
+#define MX2x_SLCDC_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x22000)
+#define MX2x_USBOTG_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x24000)
+#define MX2x_EMMA_PP_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x26000)
+#define MX2x_EMMA_PRP_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x26400)
+#define MX2x_CCM_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x27000)
+#define MX2x_SYSCTRL_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x27800)
+#define MX2x_JAM_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x3e000)
+#define MX2x_MAX_BASE_ADDR			(MX2x_AIPI_BASE_ADDR + 0x3f000)
+
+#define MX2x_AVIC_BASE_ADDR		0x10040000
+
+#define MX2x_SAHB1_BASE_ADDR		0x80000000
+#define MX2x_SAHB1_SIZE			SZ_1M
+#define MX2x_CSI_BASE_ADDR			(MX2x_SAHB1_BASE_ADDR + 0x0000)
+
+/* fixed interrupt numbers */
+#include <asm/irq.h>
+#define MX2x_INT_CSPI3		(NR_IRQS_LEGACY + 6)
+#define MX2x_INT_GPIO		(NR_IRQS_LEGACY + 8)
+#define MX2x_INT_SDHC2		(NR_IRQS_LEGACY + 10)
+#define MX2x_INT_SDHC1		(NR_IRQS_LEGACY + 11)
+#define MX2x_INT_I2C		(NR_IRQS_LEGACY + 12)
+#define MX2x_INT_SSI2		(NR_IRQS_LEGACY + 13)
+#define MX2x_INT_SSI1		(NR_IRQS_LEGACY + 14)
+#define MX2x_INT_CSPI2		(NR_IRQS_LEGACY + 15)
+#define MX2x_INT_CSPI1		(NR_IRQS_LEGACY + 16)
+#define MX2x_INT_UART4		(NR_IRQS_LEGACY + 17)
+#define MX2x_INT_UART3		(NR_IRQS_LEGACY + 18)
+#define MX2x_INT_UART2		(NR_IRQS_LEGACY + 19)
+#define MX2x_INT_UART1		(NR_IRQS_LEGACY + 20)
+#define MX2x_INT_KPP		(NR_IRQS_LEGACY + 21)
+#define MX2x_INT_RTC		(NR_IRQS_LEGACY + 22)
+#define MX2x_INT_PWM		(NR_IRQS_LEGACY + 23)
+#define MX2x_INT_GPT3		(NR_IRQS_LEGACY + 24)
+#define MX2x_INT_GPT2		(NR_IRQS_LEGACY + 25)
+#define MX2x_INT_GPT1		(NR_IRQS_LEGACY + 26)
+#define MX2x_INT_WDOG		(NR_IRQS_LEGACY + 27)
+#define MX2x_INT_PCMCIA		(NR_IRQS_LEGACY + 28)
+#define MX2x_INT_NANDFC		(NR_IRQS_LEGACY + 29)
+#define MX2x_INT_CSI		(NR_IRQS_LEGACY + 31)
+#define MX2x_INT_DMACH0		(NR_IRQS_LEGACY + 32)
+#define MX2x_INT_DMACH1		(NR_IRQS_LEGACY + 33)
+#define MX2x_INT_DMACH2		(NR_IRQS_LEGACY + 34)
+#define MX2x_INT_DMACH3		(NR_IRQS_LEGACY + 35)
+#define MX2x_INT_DMACH4		(NR_IRQS_LEGACY + 36)
+#define MX2x_INT_DMACH5		(NR_IRQS_LEGACY + 37)
+#define MX2x_INT_DMACH6		(NR_IRQS_LEGACY + 38)
+#define MX2x_INT_DMACH7		(NR_IRQS_LEGACY + 39)
+#define MX2x_INT_DMACH8		(NR_IRQS_LEGACY + 40)
+#define MX2x_INT_DMACH9		(NR_IRQS_LEGACY + 41)
+#define MX2x_INT_DMACH10	(NR_IRQS_LEGACY + 42)
+#define MX2x_INT_DMACH11	(NR_IRQS_LEGACY + 43)
+#define MX2x_INT_DMACH12	(NR_IRQS_LEGACY + 44)
+#define MX2x_INT_DMACH13	(NR_IRQS_LEGACY + 45)
+#define MX2x_INT_DMACH14	(NR_IRQS_LEGACY + 46)
+#define MX2x_INT_DMACH15	(NR_IRQS_LEGACY + 47)
+#define MX2x_INT_EMMAPRP	(NR_IRQS_LEGACY + 51)
+#define MX2x_INT_EMMAPP		(NR_IRQS_LEGACY + 52)
+#define MX2x_INT_SLCDC		(NR_IRQS_LEGACY + 60)
+#define MX2x_INT_LCDC		(NR_IRQS_LEGACY + 61)
+
+/* fixed DMA request numbers */
+#define MX2x_DMA_REQ_CSPI3_RX	1
+#define MX2x_DMA_REQ_CSPI3_TX	2
+#define MX2x_DMA_REQ_EXT	3
+#define MX2x_DMA_REQ_SDHC2	6
+#define MX2x_DMA_REQ_SDHC1	7
+#define MX2x_DMA_REQ_SSI2_RX0	8
+#define MX2x_DMA_REQ_SSI2_TX0	9
+#define MX2x_DMA_REQ_SSI2_RX1	10
+#define MX2x_DMA_REQ_SSI2_TX1	11
+#define MX2x_DMA_REQ_SSI1_RX0	12
+#define MX2x_DMA_REQ_SSI1_TX0	13
+#define MX2x_DMA_REQ_SSI1_RX1	14
+#define MX2x_DMA_REQ_SSI1_TX1	15
+#define MX2x_DMA_REQ_CSPI2_RX	16
+#define MX2x_DMA_REQ_CSPI2_TX	17
+#define MX2x_DMA_REQ_CSPI1_RX	18
+#define MX2x_DMA_REQ_CSPI1_TX	19
+#define MX2x_DMA_REQ_UART4_RX	20
+#define MX2x_DMA_REQ_UART4_TX	21
+#define MX2x_DMA_REQ_UART3_RX	22
+#define MX2x_DMA_REQ_UART3_TX	23
+#define MX2x_DMA_REQ_UART2_RX	24
+#define MX2x_DMA_REQ_UART2_TX	25
+#define MX2x_DMA_REQ_UART1_RX	26
+#define MX2x_DMA_REQ_UART1_TX	27
+#define MX2x_DMA_REQ_CSI_STAT	30
+#define MX2x_DMA_REQ_CSI_RX	31
+
+#endif /* ifndef __MACH_MX2x_H__ */
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MACH_MX31_H__
+#define __MACH_MX31_H__
+
+#define MX31_AIPS1_BASE_ADDR		0x43f00000
+#define MX31_AIPS1_SIZE			SZ_1M
+#define MX31_SPBA0_BASE_ADDR		0x50000000
+#define MX31_SPBA0_SIZE			SZ_1M
+#define MX31_AIPS2_BASE_ADDR		0x53f00000
+#define MX31_AIPS2_SIZE			SZ_1M
+#define MX31_AVIC_BASE_ADDR		0x68000000
+#define MX31_AVIC_SIZE			SZ_1M
+#define MX31_X_MEMC_BASE_ADDR		0xb8000000
+#define MX31_X_MEMC_SIZE		SZ_64K
+
+#define MX31_IO_P2V(x)			IMX_IO_P2V(x)
+
+#endif /* ifndef __MACH_MX31_H__ */
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MACH_MX35_H__
+#define __MACH_MX35_H__
+
+#define MX35_AIPS1_BASE_ADDR		0x43f00000
+#define MX35_AIPS1_SIZE			SZ_1M
+#define MX35_SPBA0_BASE_ADDR		0x50000000
+#define MX35_SPBA0_SIZE			SZ_1M
+#define MX35_AIPS2_BASE_ADDR		0x53f00000
+#define MX35_AIPS2_SIZE			SZ_1M
+#define MX35_AVIC_BASE_ADDR		0x68000000
+#define MX35_AVIC_SIZE			SZ_1M
+#define MX35_X_MEMC_BASE_ADDR		0xb8000000
+#define MX35_X_MEMC_SIZE		SZ_64K
+
+#define MX35_IO_P2V(x)			IMX_IO_P2V(x)
+
+#endif /* ifndef __MACH_MX35_H__ */
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+
+#ifndef __MACH_MX3x_H__
+#define __MACH_MX3x_H__
+
+/*
+ * MX31 memory map:
+ *
+ * Virt		Phys		Size	What
+ * ---------------------------------------------------------------------------
+ * FC000000	43F00000	1M	AIPS 1
+ * FC100000	50000000	1M	SPBA
+ * FC200000	53F00000	1M	AIPS 2
+ * FC500000	60000000	128M	ROMPATCH
+ * FC400000	68000000	128M	AVIC
+ *         	70000000	256M	IPU (MAX M2)
+ *         	80000000	256M	CSD0 SDRAM/DDR
+ *         	90000000	256M	CSD1 SDRAM/DDR
+ *         	A0000000	128M	CS0 Flash
+ *         	A8000000	128M	CS1 Flash
+ *         	B0000000	32M	CS2
+ *         	B2000000	32M	CS3
+ * F4000000	B4000000	32M	CS4
+ *         	B6000000	32M	CS5
+ * FC320000	B8000000	64K	NAND, SDRAM, WEIM, M3IF, EMI controllers
+ *         	C0000000	64M	PCMCIA/CF
+ */
+
+/*
+ * L2CC
+ */
+#define MX3x_L2CC_BASE_ADDR		0x30000000
+#define MX3x_L2CC_SIZE			SZ_1M
+
+/*
+ * AIPS 1
+ */
+#define MX3x_AIPS1_BASE_ADDR		0x43f00000
+#define MX3x_AIPS1_SIZE			SZ_1M
+#define MX3x_MAX_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x04000)
+#define MX3x_EVTMON_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x08000)
+#define MX3x_CLKCTL_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x0c000)
+#define MX3x_ETB_SLOT4_BASE_ADDR		(MX3x_AIPS1_BASE_ADDR + 0x10000)
+#define MX3x_ETB_SLOT5_BASE_ADDR		(MX3x_AIPS1_BASE_ADDR + 0x14000)
+#define MX3x_ECT_CTIO_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x18000)
+#define MX3x_I2C_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x80000)
+#define MX3x_I2C3_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x84000)
+#define MX3x_UART1_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x90000)
+#define MX3x_UART2_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x94000)
+#define MX3x_I2C2_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x98000)
+#define MX3x_OWIRE_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0x9c000)
+#define MX3x_SSI1_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xa0000)
+#define MX3x_CSPI1_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xa4000)
+#define MX3x_KPP_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xa8000)
+#define MX3x_IOMUXC_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xac000)
+#define MX3x_ECT_IP1_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xb8000)
+#define MX3x_ECT_IP2_BASE_ADDR			(MX3x_AIPS1_BASE_ADDR + 0xbc000)
+
+/*
+ * SPBA global module enabled #0
+ */
+#define MX3x_SPBA0_BASE_ADDR		0x50000000
+#define MX3x_SPBA0_SIZE			SZ_1M
+#define MX3x_UART3_BASE_ADDR			(MX3x_SPBA0_BASE_ADDR + 0x0c000)
+#define MX3x_CSPI2_BASE_ADDR			(MX3x_SPBA0_BASE_ADDR + 0x10000)
+#define MX3x_SSI2_BASE_ADDR			(MX3x_SPBA0_BASE_ADDR + 0x14000)
+#define MX3x_ATA_DMA_BASE_ADDR			(MX3x_SPBA0_BASE_ADDR + 0x20000)
+#define MX3x_MSHC1_BASE_ADDR			(MX3x_SPBA0_BASE_ADDR + 0x24000)
+#define MX3x_SPBA_CTRL_BASE_ADDR		(MX3x_SPBA0_BASE_ADDR + 0x3c000)
+
+/*
+ * AIPS 2
+ */
+#define MX3x_AIPS2_BASE_ADDR		0x53f00000
+#define MX3x_AIPS2_SIZE			SZ_1M
+#define MX3x_CCM_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0x80000)
+#define MX3x_GPT1_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0x90000)
+#define MX3x_EPIT1_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0x94000)
+#define MX3x_EPIT2_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0x98000)
+#define MX3x_GPIO3_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xa4000)
+#define MX3x_SCC_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xac000)
+#define MX3x_RNGA_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xb0000)
+#define MX3x_IPU_CTRL_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xc0000)
+#define MX3x_AUDMUX_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xc4000)
+#define MX3x_GPIO1_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xcc000)
+#define MX3x_GPIO2_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xd0000)
+#define MX3x_SDMA_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xd4000)
+#define MX3x_RTC_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xd8000)
+#define MX3x_WDOG_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xdc000)
+#define MX3x_PWM_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xe0000)
+#define MX3x_RTIC_BASE_ADDR			(MX3x_AIPS2_BASE_ADDR + 0xec000)
+
+/*
+ * ROMP and AVIC
+ */
+#define MX3x_ROMP_BASE_ADDR		0x60000000
+#define MX3x_ROMP_SIZE			SZ_1M
+
+#define MX3x_AVIC_BASE_ADDR		0x68000000
+#define MX3x_AVIC_SIZE			SZ_1M
+
+/*
+ * Memory regions and CS
+ */
+#define MX3x_IPU_MEM_BASE_ADDR		0x70000000
+#define MX3x_CSD0_BASE_ADDR		0x80000000
+#define MX3x_CSD1_BASE_ADDR		0x90000000
+
+#define MX3x_CS0_BASE_ADDR		0xa0000000
+#define MX3x_CS1_BASE_ADDR		0xa8000000
+#define MX3x_CS2_BASE_ADDR		0xb0000000
+#define MX3x_CS3_BASE_ADDR		0xb2000000
+
+#define MX3x_CS4_BASE_ADDR		0xb4000000
+#define MX3x_CS4_BASE_ADDR_VIRT		0xf6000000
+#define MX3x_CS4_SIZE			SZ_32M
+
+#define MX3x_CS5_BASE_ADDR		0xb6000000
+#define MX3x_CS5_BASE_ADDR_VIRT		0xf8000000
+#define MX3x_CS5_SIZE			SZ_32M
+
+/*
+ * NAND, SDRAM, WEIM, M3IF, EMI controllers
+ */
+#define MX3x_X_MEMC_BASE_ADDR		0xb8000000
+#define MX3x_X_MEMC_SIZE		SZ_64K
+#define MX3x_ESDCTL_BASE_ADDR			(MX3x_X_MEMC_BASE_ADDR + 0x1000)
+#define MX3x_WEIM_BASE_ADDR			(MX3x_X_MEMC_BASE_ADDR + 0x2000)
+#define MX3x_M3IF_BASE_ADDR			(MX3x_X_MEMC_BASE_ADDR + 0x3000)
+#define MX3x_EMI_CTL_BASE_ADDR			(MX3x_X_MEMC_BASE_ADDR + 0x4000)
+#define MX3x_PCMCIA_CTL_BASE_ADDR		MX3x_EMI_CTL_BASE_ADDR
+
+#define MX3x_PCMCIA_MEM_BASE_ADDR	0xbc000000
+
+/*
+ * Interrupt numbers
+ */
+#include <asm/irq.h>
+#define MX3x_INT_I2C3		(NR_IRQS_LEGACY + 3)
+#define MX3x_INT_I2C2		(NR_IRQS_LEGACY + 4)
+#define MX3x_INT_RTIC		(NR_IRQS_LEGACY + 6)
+#define MX3x_INT_I2C		(NR_IRQS_LEGACY + 10)
+#define MX3x_INT_CSPI2		(NR_IRQS_LEGACY + 13)
+#define MX3x_INT_CSPI1		(NR_IRQS_LEGACY + 14)
+#define MX3x_INT_ATA		(NR_IRQS_LEGACY + 15)
+#define MX3x_INT_UART3		(NR_IRQS_LEGACY + 18)
+#define MX3x_INT_IIM		(NR_IRQS_LEGACY + 19)
+#define MX3x_INT_RNGA		(NR_IRQS_LEGACY + 22)
+#define MX3x_INT_EVTMON		(NR_IRQS_LEGACY + 23)
+#define MX3x_INT_KPP		(NR_IRQS_LEGACY + 24)
+#define MX3x_INT_RTC		(NR_IRQS_LEGACY + 25)
+#define MX3x_INT_PWM		(NR_IRQS_LEGACY + 26)
+#define MX3x_INT_EPIT2		(NR_IRQS_LEGACY + 27)
+#define MX3x_INT_EPIT1		(NR_IRQS_LEGACY + 28)
+#define MX3x_INT_GPT		(NR_IRQS_LEGACY + 29)
+#define MX3x_INT_POWER_FAIL	(NR_IRQS_LEGACY + 30)
+#define MX3x_INT_UART2		(NR_IRQS_LEGACY + 32)
+#define MX3x_INT_NANDFC		(NR_IRQS_LEGACY + 33)
+#define MX3x_INT_SDMA		(NR_IRQS_LEGACY + 34)
+#define MX3x_INT_MSHC1		(NR_IRQS_LEGACY + 39)
+#define MX3x_INT_IPU_ERR	(NR_IRQS_LEGACY + 41)
+#define MX3x_INT_IPU_SYN	(NR_IRQS_LEGACY + 42)
+#define MX3x_INT_UART1		(NR_IRQS_LEGACY + 45)
+#define MX3x_INT_ECT		(NR_IRQS_LEGACY + 48)
+#define MX3x_INT_SCC_SCM	(NR_IRQS_LEGACY + 49)
+#define MX3x_INT_SCC_SMN	(NR_IRQS_LEGACY + 50)
+#define MX3x_INT_GPIO2		(NR_IRQS_LEGACY + 51)
+#define MX3x_INT_GPIO1		(NR_IRQS_LEGACY + 52)
+#define MX3x_INT_WDOG		(NR_IRQS_LEGACY + 55)
+#define MX3x_INT_GPIO3		(NR_IRQS_LEGACY + 56)
+#define MX3x_INT_EXT_POWER	(NR_IRQS_LEGACY + 58)
+#define MX3x_INT_EXT_TEMPER	(NR_IRQS_LEGACY + 59)
+#define MX3x_INT_EXT_SENSOR60	(NR_IRQS_LEGACY + 60)
+#define MX3x_INT_EXT_SENSOR61	(NR_IRQS_LEGACY + 61)
+#define MX3x_INT_EXT_WDOG	(NR_IRQS_LEGACY + 62)
+#define MX3x_INT_EXT_TV		(NR_IRQS_LEGACY + 63)
+
+#define MX3x_PROD_SIGNATURE		0x1	/* For MX31 */
+
+#endif /* ifndef __MACH_MX3x_H__ */
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2004-2007, 2010-2015 Freescale Semiconductor, Inc.
+ * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
+ */
+
+#ifndef __ASM_ARCH_MXC_H__
+#define __ASM_ARCH_MXC_H__
+
+#include <linux/types.h>
+#include <soc/imx/cpu.h>
+
+#ifndef __ASM_ARCH_MXC_HARDWARE_H__
+#error "Do not include directly."
+#endif
+
+#define IMX_DDR_TYPE_LPDDR2		1
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_SOC_IMX6SL
+static inline bool cpu_is_imx6sl(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6SL;
+}
+#else
+static inline bool cpu_is_imx6sl(void)
+{
+	return false;
+}
+#endif
+
+static inline bool cpu_is_imx6dl(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6DL;
+}
+
+static inline bool cpu_is_imx6sx(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6SX;
+}
+
+static inline bool cpu_is_imx6ul(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6UL;
+}
+
+static inline bool cpu_is_imx6ull(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6ULL;
+}
+
+static inline bool cpu_is_imx6ulz(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6ULZ;
+}
+
+static inline bool cpu_is_imx6sll(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6SLL;
+}
+
+static inline bool cpu_is_imx6q(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX6Q;
+}
+
+static inline bool cpu_is_imx7d(void)
+{
+	return __mxc_cpu_type == MXC_CPU_IMX7D;
+}
+
+struct cpu_op {
+	u32 cpu_rate;
+};
+
+int tzic_enable_wake(void);
+
+extern struct cpu_op *(*get_cpu_op)(int *op);
+#endif
+
+#define imx_readl	readl_relaxed
+#define imx_readw	readw_relaxed
+#define imx_writel	writel_relaxed
+#define imx_writew	writew_relaxed
+
+#endif /*  __ASM_ARCH_MXC_H__ */
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/of_address.h>
+#include <linux/of.h>
+#include <linux/smp.h>
+
+#include <asm/cacheflush.h>
+#include <asm/page.h>
+#include <asm/smp_scu.h>
+#include <asm/mach/map.h>
+
+#include "common.h"
+#include "hardware.h"
+
+u32 g_diag_reg;
+static void __iomem *scu_base;
+
+static struct map_desc scu_io_desc __initdata = {
+	/* .virtual and .pfn are run-time assigned */
+	.length		= SZ_4K,
+	.type		= MT_DEVICE,
+};
+
+void __init imx_scu_map_io(void)
+{
+	unsigned long base;
+
+	/* Get SCU base */
+	asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base));
+
+	scu_io_desc.virtual = IMX_IO_P2V(base);
+	scu_io_desc.pfn = __phys_to_pfn(base);
+	iotable_init(&scu_io_desc, 1);
+
+	scu_base = IMX_IO_ADDRESS(base);
+}
+
+static int imx_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	imx_set_cpu_jump(cpu, v7_secondary_startup);
+	imx_enable_cpu(cpu, true);
+	return 0;
+}
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+static void __init imx_smp_init_cpus(void)
+{
+	int i, ncores;
+
+	ncores = scu_get_core_count(scu_base);
+
+	for (i = ncores; i < NR_CPUS; i++)
+		set_cpu_possible(i, false);
+}
+
+void imx_smp_prepare(void)
+{
+	scu_enable(scu_base);
+}
+
+static void __init imx_smp_prepare_cpus(unsigned int max_cpus)
+{
+	imx_smp_prepare();
+
+	/*
+	 * The diagnostic register holds the errata bits.  Mostly bootloader
+	 * does not bring up secondary cores, so that when errata bits are set
+	 * in bootloader, they are set only for boot cpu.  But on a SMP
+	 * configuration, it should be equally done on every single core.
+	 * Read the register from boot cpu here, and will replicate it into
+	 * secondary cores when booting them.
+	 */
+	asm("mrc p15, 0, %0, c15, c0, 1" : "=r" (g_diag_reg) : : "cc");
+	sync_cache_w(&g_diag_reg);
+}
+
+const struct smp_operations imx_smp_ops __initconst = {
+	.smp_init_cpus		= imx_smp_init_cpus,
+	.smp_prepare_cpus	= imx_smp_prepare_cpus,
+	.smp_boot_secondary	= imx_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= imx_cpu_die,
+	.cpu_kill		= imx_cpu_kill,
+#endif
+};
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+static void __init imx7_smp_init_cpus(void)
+{
+	struct device_node *np;
+	int i, ncores = 0;
+
+	/* The iMX7D SCU does not report core count, get it from DT */
+	for_each_of_cpu_node(np)
+		ncores++;
+
+	for (i = ncores; i < NR_CPUS; i++)
+		set_cpu_possible(i, false);
+}
+
+const struct smp_operations imx7_smp_ops __initconst = {
+	.smp_init_cpus		= imx7_smp_init_cpus,
+	.smp_boot_secondary	= imx_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= imx_cpu_die,
+	.cpu_kill		= imx_cpu_kill,
+#endif
+};
+
+#define DCFG_CCSR_SCRATCHRW1	0x200
+
+static int ls1021a_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+	return 0;
+}
+
+static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus)
+{
+	struct device_node *np;
+	void __iomem *dcfg_base;
+	unsigned long paddr;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg");
+	dcfg_base = of_iomap(np, 0);
+	of_node_put(np);
+	BUG_ON(!dcfg_base);
+
+	paddr = __pa_symbol(secondary_startup);
+	writel_relaxed(cpu_to_be32(paddr), dcfg_base + DCFG_CCSR_SCRATCHRW1);
+
+	iounmap(dcfg_base);
+}
+
+const struct smp_operations ls1021a_smp_ops __initconst = {
+	.smp_prepare_cpus	= ls1021a_smp_prepare_cpus,
+	.smp_boot_secondary	= ls1021a_boot_secondary,
+};
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2016 NXP Semiconductors
+ */
+
+#include <linux/kernel.h>
+#include <linux/suspend.h>
+#include <linux/io.h>
+#include "common.h"
+
+static int imx25_suspend_enter(suspend_state_t state)
+{
+	if (!IS_ENABLED(CONFIG_PM))
+		return 0;
+
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		cpu_do_idle();
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct platform_suspend_ops imx25_suspend_ops = {
+	.enter = imx25_suspend_enter,
+	.valid = suspend_valid_only_mem,
+};
+
+void __init imx25_pm_init(void)
+{
+	suspend_set_ops(&imx25_suspend_ops);
+}
@@ -0,0 +1,52 @@
+/*
+ * i.MX27 Power Management Routines
+ *
+ * Based on Freescale's BSP
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License.
+ */
+
+#include <linux/of_address.h>
+#include <linux/kernel.h>
+#include <linux/suspend.h>
+#include <linux/io.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static int mx27_suspend_enter(suspend_state_t state)
+{
+	void __iomem *ccm_base;
+	struct device_node *np;
+	u32 cscr;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
+	ccm_base = of_iomap(np, 0);
+	BUG_ON(!ccm_base);
+
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		/* Clear MPEN and SPEN to disable MPLL/SPLL */
+		cscr = imx_readl(ccm_base);
+		cscr &= 0xFFFFFFFC;
+		imx_writel(cscr, ccm_base);
+		/* Executes WFI */
+		cpu_do_idle();
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct platform_suspend_ops mx27_suspend_ops = {
+	.enter = mx27_suspend_enter,
+	.valid = suspend_valid_only_mem,
+};
+
+void __init imx27_pm_init(void)
+{
+	suspend_set_ops(&mx27_suspend_ops);
+}
@@ -0,0 +1,421 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+#include <linux/suspend.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/export.h>
+
+#include <linux/genalloc.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+#include <asm/cacheflush.h>
+#include <asm/fncpy.h>
+#include <asm/system_misc.h>
+#include <asm/tlbflush.h>
+
+#include "common.h"
+#include "cpuidle.h"
+#include "hardware.h"
+
+#define MXC_CCM_CLPCR			0x54
+#define MXC_CCM_CLPCR_LPM_OFFSET	0
+#define MXC_CCM_CLPCR_LPM_MASK		0x3
+#define MXC_CCM_CLPCR_STBY_COUNT_OFFSET	9
+#define MXC_CCM_CLPCR_VSTBY		(0x1 << 8)
+#define MXC_CCM_CLPCR_SBYOS		(0x1 << 6)
+
+#define MXC_CORTEXA8_PLAT_LPC		0xc
+#define MXC_CORTEXA8_PLAT_LPC_DSM	(1 << 0)
+#define MXC_CORTEXA8_PLAT_LPC_DBG_DSM	(1 << 1)
+
+#define MXC_SRPG_NEON_SRPGCR		0x280
+#define MXC_SRPG_ARM_SRPGCR		0x2a0
+#define MXC_SRPG_EMPGC0_SRPGCR		0x2c0
+#define MXC_SRPG_EMPGC1_SRPGCR		0x2d0
+
+#define MXC_SRPGCR_PCR			1
+
+/*
+ * The WAIT_UNCLOCKED_POWER_OFF state only requires <= 500ns to exit.
+ * This is also the lowest power state possible without affecting
+ * non-cpu parts of the system.  For these reasons, imx5 should default
+ * to always using this state for cpu idling.  The PM_SUSPEND_STANDBY also
+ * uses this state and needs to take no action when registers remain configured
+ * for this state.
+ */
+#define IMX5_DEFAULT_CPU_IDLE_STATE WAIT_UNCLOCKED_POWER_OFF
+
+struct imx5_suspend_io_state {
+	u32	offset;
+	u32	clear;
+	u32	set;
+	u32	saved_value;
+};
+
+struct imx5_pm_data {
+	phys_addr_t ccm_addr;
+	phys_addr_t cortex_addr;
+	phys_addr_t gpc_addr;
+	phys_addr_t m4if_addr;
+	phys_addr_t iomuxc_addr;
+	void (*suspend_asm)(void __iomem *ocram_vbase);
+	const u32 *suspend_asm_sz;
+	const struct imx5_suspend_io_state *suspend_io_config;
+	int suspend_io_count;
+};
+
+static const struct imx5_suspend_io_state imx53_suspend_io_config[] = {
+#define MX53_DSE_HIGHZ_MASK (0x7 << 19)
+	{.offset = 0x584, .clear = MX53_DSE_HIGHZ_MASK}, /* DQM0 */
+	{.offset = 0x594, .clear = MX53_DSE_HIGHZ_MASK}, /* DQM1 */
+	{.offset = 0x560, .clear = MX53_DSE_HIGHZ_MASK}, /* DQM2 */
+	{.offset = 0x554, .clear = MX53_DSE_HIGHZ_MASK}, /* DQM3 */
+	{.offset = 0x574, .clear = MX53_DSE_HIGHZ_MASK}, /* CAS */
+	{.offset = 0x588, .clear = MX53_DSE_HIGHZ_MASK}, /* RAS */
+	{.offset = 0x578, .clear = MX53_DSE_HIGHZ_MASK}, /* SDCLK_0 */
+	{.offset = 0x570, .clear = MX53_DSE_HIGHZ_MASK}, /* SDCLK_1 */
+
+	{.offset = 0x580, .clear = MX53_DSE_HIGHZ_MASK}, /* SDODT0 */
+	{.offset = 0x564, .clear = MX53_DSE_HIGHZ_MASK}, /* SDODT1 */
+	{.offset = 0x57c, .clear = MX53_DSE_HIGHZ_MASK}, /* SDQS0 */
+	{.offset = 0x590, .clear = MX53_DSE_HIGHZ_MASK}, /* SDQS1 */
+	{.offset = 0x568, .clear = MX53_DSE_HIGHZ_MASK}, /* SDQS2 */
+	{.offset = 0x558, .clear = MX53_DSE_HIGHZ_MASK}, /* SDSQ3 */
+	{.offset = 0x6f0, .clear = MX53_DSE_HIGHZ_MASK}, /* GRP_ADDS */
+	{.offset = 0x718, .clear = MX53_DSE_HIGHZ_MASK}, /* GRP_BODS */
+	{.offset = 0x71c, .clear = MX53_DSE_HIGHZ_MASK}, /* GRP_B1DS */
+	{.offset = 0x728, .clear = MX53_DSE_HIGHZ_MASK}, /* GRP_B2DS */
+	{.offset = 0x72c, .clear = MX53_DSE_HIGHZ_MASK}, /* GRP_B3DS */
+
+	/* Controls the CKE signal which is required to leave self refresh */
+	{.offset = 0x720, .clear = MX53_DSE_HIGHZ_MASK, .set = 1 << 19}, /* CTLDS */
+};
+
+static const struct imx5_pm_data imx51_pm_data __initconst = {
+	.ccm_addr = 0x73fd4000,
+	.cortex_addr = 0x83fa0000,
+	.gpc_addr = 0x73fd8000,
+};
+
+static const struct imx5_pm_data imx53_pm_data __initconst = {
+	.ccm_addr = 0x53fd4000,
+	.cortex_addr = 0x63fa0000,
+	.gpc_addr = 0x53fd8000,
+	.m4if_addr = 0x63fd8000,
+	.iomuxc_addr = 0x53fa8000,
+	.suspend_asm = &imx53_suspend,
+	.suspend_asm_sz = &imx53_suspend_sz,
+	.suspend_io_config = imx53_suspend_io_config,
+	.suspend_io_count = ARRAY_SIZE(imx53_suspend_io_config),
+};
+
+#define MX5_MAX_SUSPEND_IOSTATE ARRAY_SIZE(imx53_suspend_io_config)
+
+/*
+ * This structure is for passing necessary data for low level ocram
+ * suspend code(arch/arm/mach-imx/suspend-imx53.S), if this struct
+ * definition is changed, the offset definition in that file
+ * must be also changed accordingly otherwise, the suspend to ocram
+ * function will be broken!
+ */
+struct imx5_cpu_suspend_info {
+	void __iomem	*m4if_base;
+	void __iomem	*iomuxc_base;
+	u32		io_count;
+	struct imx5_suspend_io_state io_state[MX5_MAX_SUSPEND_IOSTATE];
+} __aligned(8);
+
+static void __iomem *ccm_base;
+static void __iomem *cortex_base;
+static void __iomem *gpc_base;
+static void __iomem *suspend_ocram_base;
+static void (*imx5_suspend_in_ocram_fn)(void __iomem *ocram_vbase);
+
+/*
+ * set cpu low power mode before WFI instruction. This function is called
+ * mx5 because it can be used for mx51, and mx53.
+ */
+static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode)
+{
+	u32 plat_lpc, arm_srpgcr, ccm_clpcr;
+	u32 empgc0, empgc1;
+	int stop_mode = 0;
+
+	/* always allow platform to issue a deep sleep mode request */
+	plat_lpc = imx_readl(cortex_base + MXC_CORTEXA8_PLAT_LPC) &
+	    ~(MXC_CORTEXA8_PLAT_LPC_DSM);
+	ccm_clpcr = imx_readl(ccm_base + MXC_CCM_CLPCR) &
+		    ~(MXC_CCM_CLPCR_LPM_MASK);
+	arm_srpgcr = imx_readl(gpc_base + MXC_SRPG_ARM_SRPGCR) &
+		     ~(MXC_SRPGCR_PCR);
+	empgc0 = imx_readl(gpc_base + MXC_SRPG_EMPGC0_SRPGCR) &
+		 ~(MXC_SRPGCR_PCR);
+	empgc1 = imx_readl(gpc_base + MXC_SRPG_EMPGC1_SRPGCR) &
+		 ~(MXC_SRPGCR_PCR);
+
+	switch (mode) {
+	case WAIT_CLOCKED:
+		break;
+	case WAIT_UNCLOCKED:
+		ccm_clpcr |= 0x1 << MXC_CCM_CLPCR_LPM_OFFSET;
+		break;
+	case WAIT_UNCLOCKED_POWER_OFF:
+	case STOP_POWER_OFF:
+		plat_lpc |= MXC_CORTEXA8_PLAT_LPC_DSM
+			    | MXC_CORTEXA8_PLAT_LPC_DBG_DSM;
+		if (mode == WAIT_UNCLOCKED_POWER_OFF) {
+			ccm_clpcr |= 0x1 << MXC_CCM_CLPCR_LPM_OFFSET;
+			ccm_clpcr &= ~MXC_CCM_CLPCR_VSTBY;
+			ccm_clpcr &= ~MXC_CCM_CLPCR_SBYOS;
+			stop_mode = 0;
+		} else {
+			ccm_clpcr |= 0x2 << MXC_CCM_CLPCR_LPM_OFFSET;
+			ccm_clpcr |= 0x3 << MXC_CCM_CLPCR_STBY_COUNT_OFFSET;
+			ccm_clpcr |= MXC_CCM_CLPCR_VSTBY;
+			ccm_clpcr |= MXC_CCM_CLPCR_SBYOS;
+			stop_mode = 1;
+		}
+		arm_srpgcr |= MXC_SRPGCR_PCR;
+		break;
+	case STOP_POWER_ON:
+		ccm_clpcr |= 0x2 << MXC_CCM_CLPCR_LPM_OFFSET;
+		break;
+	default:
+		printk(KERN_WARNING "UNKNOWN cpu power mode: %d\n", mode);
+		return;
+	}
+
+	imx_writel(plat_lpc, cortex_base + MXC_CORTEXA8_PLAT_LPC);
+	imx_writel(ccm_clpcr, ccm_base + MXC_CCM_CLPCR);
+	imx_writel(arm_srpgcr, gpc_base + MXC_SRPG_ARM_SRPGCR);
+	imx_writel(arm_srpgcr, gpc_base + MXC_SRPG_NEON_SRPGCR);
+
+	if (stop_mode) {
+		empgc0 |= MXC_SRPGCR_PCR;
+		empgc1 |= MXC_SRPGCR_PCR;
+
+		imx_writel(empgc0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
+		imx_writel(empgc1, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
+	}
+}
+
+static int mx5_suspend_enter(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		mx5_cpu_lp_set(STOP_POWER_OFF);
+		break;
+	case PM_SUSPEND_STANDBY:
+		/* DEFAULT_IDLE_STATE already configured */
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (state == PM_SUSPEND_MEM) {
+		local_flush_tlb_all();
+		flush_cache_all();
+
+		/*clear the EMPGC0/1 bits */
+		imx_writel(0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
+		imx_writel(0, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
+
+		if (imx5_suspend_in_ocram_fn)
+			imx5_suspend_in_ocram_fn(suspend_ocram_base);
+		else
+			cpu_do_idle();
+
+	} else {
+		cpu_do_idle();
+	}
+
+	/* return registers to default idle state */
+	mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE);
+	return 0;
+}
+
+static int mx5_pm_valid(suspend_state_t state)
+{
+	return (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX);
+}
+
+static const struct platform_suspend_ops mx5_suspend_ops = {
+	.valid = mx5_pm_valid,
+	.enter = mx5_suspend_enter,
+};
+
+static inline int imx5_cpu_do_idle(void)
+{
+	int ret = tzic_enable_wake();
+
+	if (likely(!ret))
+		cpu_do_idle();
+
+	return ret;
+}
+
+static void imx5_pm_idle(void)
+{
+	imx5_cpu_do_idle();
+}
+
+static int __init imx_suspend_alloc_ocram(
+				size_t size,
+				void __iomem **virt_out,
+				phys_addr_t *phys_out)
+{
+	struct device_node *node;
+	struct platform_device *pdev;
+	struct gen_pool *ocram_pool;
+	unsigned long ocram_base;
+	void __iomem *virt;
+	phys_addr_t phys;
+	int ret = 0;
+
+	/* Copied from imx6: TODO factorize */
+	node = of_find_compatible_node(NULL, NULL, "mmio-sram");
+	if (!node) {
+		pr_warn("%s: failed to find ocram node!\n", __func__);
+		return -ENODEV;
+	}
+
+	pdev = of_find_device_by_node(node);
+	if (!pdev) {
+		pr_warn("%s: failed to find ocram device!\n", __func__);
+		ret = -ENODEV;
+		goto put_node;
+	}
+
+	ocram_pool = gen_pool_get(&pdev->dev, NULL);
+	if (!ocram_pool) {
+		pr_warn("%s: ocram pool unavailable!\n", __func__);
+		ret = -ENODEV;
+		goto put_device;
+	}
+
+	ocram_base = gen_pool_alloc(ocram_pool, size);
+	if (!ocram_base) {
+		pr_warn("%s: unable to alloc ocram!\n", __func__);
+		ret = -ENOMEM;
+		goto put_device;
+	}
+
+	phys = gen_pool_virt_to_phys(ocram_pool, ocram_base);
+	virt = __arm_ioremap_exec(phys, size, false);
+	if (phys_out)
+		*phys_out = phys;
+	if (virt_out)
+		*virt_out = virt;
+
+put_device:
+	put_device(&pdev->dev);
+put_node:
+	of_node_put(node);
+
+	return ret;
+}
+
+static int __init imx5_suspend_init(const struct imx5_pm_data *soc_data)
+{
+	struct imx5_cpu_suspend_info *suspend_info;
+	int ret;
+	/* Need this to avoid compile error due to const typeof in fncpy.h */
+	void (*suspend_asm)(void __iomem *) = soc_data->suspend_asm;
+
+	if (!suspend_asm)
+		return 0;
+
+	if (!soc_data->suspend_asm_sz || !*soc_data->suspend_asm_sz)
+		return -EINVAL;
+
+	ret = imx_suspend_alloc_ocram(
+		*soc_data->suspend_asm_sz + sizeof(*suspend_info),
+		&suspend_ocram_base, NULL);
+	if (ret)
+		return ret;
+
+	suspend_info = suspend_ocram_base;
+
+	suspend_info->io_count = soc_data->suspend_io_count;
+	memcpy(suspend_info->io_state, soc_data->suspend_io_config,
+	       sizeof(*suspend_info->io_state) * soc_data->suspend_io_count);
+
+	suspend_info->m4if_base = ioremap(soc_data->m4if_addr, SZ_16K);
+	if (!suspend_info->m4if_base) {
+		ret = -ENOMEM;
+		goto failed_map_m4if;
+	}
+
+	suspend_info->iomuxc_base = ioremap(soc_data->iomuxc_addr, SZ_16K);
+	if (!suspend_info->iomuxc_base) {
+		ret = -ENOMEM;
+		goto failed_map_iomuxc;
+	}
+
+	imx5_suspend_in_ocram_fn = fncpy(
+		suspend_ocram_base + sizeof(*suspend_info),
+		suspend_asm,
+		*soc_data->suspend_asm_sz);
+
+	return 0;
+
+failed_map_iomuxc:
+	iounmap(suspend_info->m4if_base);
+
+failed_map_m4if:
+	return ret;
+}
+
+static int __init imx5_pm_common_init(const struct imx5_pm_data *data)
+{
+	int ret;
+	struct clk *gpc_dvfs_clk = clk_get(NULL, "gpc_dvfs");
+
+	if (IS_ERR(gpc_dvfs_clk))
+		return PTR_ERR(gpc_dvfs_clk);
+
+	ret = clk_prepare_enable(gpc_dvfs_clk);
+	if (ret)
+		return ret;
+
+	arm_pm_idle = imx5_pm_idle;
+
+	ccm_base = ioremap(data->ccm_addr, SZ_16K);
+	cortex_base = ioremap(data->cortex_addr, SZ_16K);
+	gpc_base = ioremap(data->gpc_addr, SZ_16K);
+	WARN_ON(!ccm_base || !cortex_base || !gpc_base);
+
+	/* Set the registers to the default cpu idle state. */
+	mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE);
+
+	ret = imx5_cpuidle_init();
+	if (ret)
+		pr_warn("%s: cpuidle init failed %d\n", __func__, ret);
+
+	ret = imx5_suspend_init(data);
+	if (ret)
+		pr_warn("%s: No DDR LPM support with suspend %d!\n",
+			__func__, ret);
+
+	suspend_set_ops(&mx5_suspend_ops);
+
+	return 0;
+}
+
+void __init imx51_pm_init(void)
+{
+	if (IS_ENABLED(CONFIG_SOC_IMX51))
+		imx5_pm_common_init(&imx51_pm_data);
+}
+
+void __init imx53_pm_init(void)
+{
+	if (IS_ENABLED(CONFIG_SOC_IMX53))
+		imx5_pm_common_init(&imx53_pm_data);
+}
@@ -0,0 +1,701 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011-2014 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/clk/imx.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/genalloc.h>
+#include <linux/irqchip/arm-gic.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/suspend.h>
+#include <asm/cacheflush.h>
+#include <asm/fncpy.h>
+#include <asm/proc-fns.h>
+#include <asm/suspend.h>
+#include <asm/tlb.h>
+
+#include "common.h"
+#include "hardware.h"
+
+#define CCR				0x0
+#define BM_CCR_WB_COUNT			(0x7 << 16)
+#define BM_CCR_RBC_BYPASS_COUNT		(0x3f << 21)
+#define BM_CCR_RBC_EN			(0x1 << 27)
+
+#define CLPCR				0x54
+#define BP_CLPCR_LPM			0
+#define BM_CLPCR_LPM			(0x3 << 0)
+#define BM_CLPCR_BYPASS_PMIC_READY	(0x1 << 2)
+#define BM_CLPCR_ARM_CLK_DIS_ON_LPM	(0x1 << 5)
+#define BM_CLPCR_SBYOS			(0x1 << 6)
+#define BM_CLPCR_DIS_REF_OSC		(0x1 << 7)
+#define BM_CLPCR_VSTBY			(0x1 << 8)
+#define BP_CLPCR_STBY_COUNT		9
+#define BM_CLPCR_STBY_COUNT		(0x3 << 9)
+#define BM_CLPCR_COSC_PWRDOWN		(0x1 << 11)
+#define BM_CLPCR_WB_PER_AT_LPM		(0x1 << 16)
+#define BM_CLPCR_WB_CORE_AT_LPM		(0x1 << 17)
+#define BM_CLPCR_BYP_MMDC_CH0_LPM_HS	(0x1 << 19)
+#define BM_CLPCR_BYP_MMDC_CH1_LPM_HS	(0x1 << 21)
+#define BM_CLPCR_MASK_CORE0_WFI		(0x1 << 22)
+#define BM_CLPCR_MASK_CORE1_WFI		(0x1 << 23)
+#define BM_CLPCR_MASK_CORE2_WFI		(0x1 << 24)
+#define BM_CLPCR_MASK_CORE3_WFI		(0x1 << 25)
+#define BM_CLPCR_MASK_SCU_IDLE		(0x1 << 26)
+#define BM_CLPCR_MASK_L2CC_IDLE		(0x1 << 27)
+
+#define CGPR				0x64
+#define BM_CGPR_INT_MEM_CLK_LPM		(0x1 << 17)
+
+#define MX6Q_SUSPEND_OCRAM_SIZE		0x1000
+#define MX6_MAX_MMDC_IO_NUM		33
+
+static void __iomem *ccm_base;
+static void __iomem *suspend_ocram_base;
+static void (*imx6_suspend_in_ocram_fn)(void __iomem *ocram_vbase);
+
+/*
+ * suspend ocram space layout:
+ * ======================== high address ======================
+ *                              .
+ *                              .
+ *                              .
+ *                              ^
+ *                              ^
+ *                              ^
+ *                      imx6_suspend code
+ *              PM_INFO structure(imx6_cpu_pm_info)
+ * ======================== low address =======================
+ */
+
+struct imx6_pm_base {
+	phys_addr_t pbase;
+	void __iomem *vbase;
+};
+
+struct imx6_pm_socdata {
+	u32 ddr_type;
+	const char *mmdc_compat;
+	const char *src_compat;
+	const char *iomuxc_compat;
+	const char *gpc_compat;
+	const char *pl310_compat;
+	const u32 mmdc_io_num;
+	const u32 *mmdc_io_offset;
+};
+
+static const u32 imx6q_mmdc_io_offset[] __initconst = {
+	0x5ac, 0x5b4, 0x528, 0x520, /* DQM0 ~ DQM3 */
+	0x514, 0x510, 0x5bc, 0x5c4, /* DQM4 ~ DQM7 */
+	0x56c, 0x578, 0x588, 0x594, /* CAS, RAS, SDCLK_0, SDCLK_1 */
+	0x5a8, 0x5b0, 0x524, 0x51c, /* SDQS0 ~ SDQS3 */
+	0x518, 0x50c, 0x5b8, 0x5c0, /* SDQS4 ~ SDQS7 */
+	0x784, 0x788, 0x794, 0x79c, /* GPR_B0DS ~ GPR_B3DS */
+	0x7a0, 0x7a4, 0x7a8, 0x748, /* GPR_B4DS ~ GPR_B7DS */
+	0x59c, 0x5a0, 0x750, 0x774, /* SODT0, SODT1, MODE_CTL, MODE */
+	0x74c,			    /* GPR_ADDS */
+};
+
+static const u32 imx6dl_mmdc_io_offset[] __initconst = {
+	0x470, 0x474, 0x478, 0x47c, /* DQM0 ~ DQM3 */
+	0x480, 0x484, 0x488, 0x48c, /* DQM4 ~ DQM7 */
+	0x464, 0x490, 0x4ac, 0x4b0, /* CAS, RAS, SDCLK_0, SDCLK_1 */
+	0x4bc, 0x4c0, 0x4c4, 0x4c8, /* DRAM_SDQS0 ~ DRAM_SDQS3 */
+	0x4cc, 0x4d0, 0x4d4, 0x4d8, /* DRAM_SDQS4 ~ DRAM_SDQS7 */
+	0x764, 0x770, 0x778, 0x77c, /* GPR_B0DS ~ GPR_B3DS */
+	0x780, 0x784, 0x78c, 0x748, /* GPR_B4DS ~ GPR_B7DS */
+	0x4b4, 0x4b8, 0x750, 0x760, /* SODT0, SODT1, MODE_CTL, MODE */
+	0x74c,			    /* GPR_ADDS */
+};
+
+static const u32 imx6sl_mmdc_io_offset[] __initconst = {
+	0x30c, 0x310, 0x314, 0x318, /* DQM0 ~ DQM3 */
+	0x5c4, 0x5cc, 0x5d4, 0x5d8, /* GPR_B0DS ~ GPR_B3DS */
+	0x300, 0x31c, 0x338, 0x5ac, /* CAS, RAS, SDCLK_0, GPR_ADDS */
+	0x33c, 0x340, 0x5b0, 0x5c0, /* SODT0, SODT1, MODE_CTL, MODE */
+	0x330, 0x334, 0x320,        /* SDCKE0, SDCKE1, RESET */
+};
+
+static const u32 imx6sll_mmdc_io_offset[] __initconst = {
+	0x294, 0x298, 0x29c, 0x2a0, /* DQM0 ~ DQM3 */
+	0x544, 0x54c, 0x554, 0x558, /* GPR_B0DS ~ GPR_B3DS */
+	0x530, 0x540, 0x2ac, 0x52c, /* MODE_CTL, MODE, SDCLK_0, GPR_ADDDS */
+	0x2a4, 0x2a8,		    /* SDCKE0, SDCKE1*/
+};
+
+static const u32 imx6sx_mmdc_io_offset[] __initconst = {
+	0x2ec, 0x2f0, 0x2f4, 0x2f8, /* DQM0 ~ DQM3 */
+	0x60c, 0x610, 0x61c, 0x620, /* GPR_B0DS ~ GPR_B3DS */
+	0x300, 0x2fc, 0x32c, 0x5f4, /* CAS, RAS, SDCLK_0, GPR_ADDS */
+	0x310, 0x314, 0x5f8, 0x608, /* SODT0, SODT1, MODE_CTL, MODE */
+	0x330, 0x334, 0x338, 0x33c, /* SDQS0 ~ SDQS3 */
+};
+
+static const u32 imx6ul_mmdc_io_offset[] __initconst = {
+	0x244, 0x248, 0x24c, 0x250, /* DQM0, DQM1, RAS, CAS */
+	0x27c, 0x498, 0x4a4, 0x490, /* SDCLK0, GPR_B0DS-B1DS, GPR_ADDS */
+	0x280, 0x284, 0x260, 0x264, /* SDQS0~1, SODT0, SODT1 */
+	0x494, 0x4b0,	            /* MODE_CTL, MODE, */
+};
+
+static const struct imx6_pm_socdata imx6q_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6q-mmdc",
+	.src_compat = "fsl,imx6q-src",
+	.iomuxc_compat = "fsl,imx6q-iomuxc",
+	.gpc_compat = "fsl,imx6q-gpc",
+	.pl310_compat = "arm,pl310-cache",
+	.mmdc_io_num = ARRAY_SIZE(imx6q_mmdc_io_offset),
+	.mmdc_io_offset = imx6q_mmdc_io_offset,
+};
+
+static const struct imx6_pm_socdata imx6dl_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6q-mmdc",
+	.src_compat = "fsl,imx6q-src",
+	.iomuxc_compat = "fsl,imx6dl-iomuxc",
+	.gpc_compat = "fsl,imx6q-gpc",
+	.pl310_compat = "arm,pl310-cache",
+	.mmdc_io_num = ARRAY_SIZE(imx6dl_mmdc_io_offset),
+	.mmdc_io_offset = imx6dl_mmdc_io_offset,
+};
+
+static const struct imx6_pm_socdata imx6sl_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6sl-mmdc",
+	.src_compat = "fsl,imx6sl-src",
+	.iomuxc_compat = "fsl,imx6sl-iomuxc",
+	.gpc_compat = "fsl,imx6sl-gpc",
+	.pl310_compat = "arm,pl310-cache",
+	.mmdc_io_num = ARRAY_SIZE(imx6sl_mmdc_io_offset),
+	.mmdc_io_offset = imx6sl_mmdc_io_offset,
+};
+
+static const struct imx6_pm_socdata imx6sll_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6sll-mmdc",
+	.src_compat = "fsl,imx6sll-src",
+	.iomuxc_compat = "fsl,imx6sll-iomuxc",
+	.gpc_compat = "fsl,imx6sll-gpc",
+	.pl310_compat = "arm,pl310-cache",
+	.mmdc_io_num = ARRAY_SIZE(imx6sll_mmdc_io_offset),
+	.mmdc_io_offset = imx6sll_mmdc_io_offset,
+};
+
+static const struct imx6_pm_socdata imx6sx_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6sx-mmdc",
+	.src_compat = "fsl,imx6sx-src",
+	.iomuxc_compat = "fsl,imx6sx-iomuxc",
+	.gpc_compat = "fsl,imx6sx-gpc",
+	.pl310_compat = "arm,pl310-cache",
+	.mmdc_io_num = ARRAY_SIZE(imx6sx_mmdc_io_offset),
+	.mmdc_io_offset = imx6sx_mmdc_io_offset,
+};
+
+static const struct imx6_pm_socdata imx6ul_pm_data __initconst = {
+	.mmdc_compat = "fsl,imx6ul-mmdc",
+	.src_compat = "fsl,imx6ul-src",
+	.iomuxc_compat = "fsl,imx6ul-iomuxc",
+	.gpc_compat = "fsl,imx6ul-gpc",
+	.pl310_compat = NULL,
+	.mmdc_io_num = ARRAY_SIZE(imx6ul_mmdc_io_offset),
+	.mmdc_io_offset = imx6ul_mmdc_io_offset,
+};
+
+/*
+ * This structure is for passing necessary data for low level ocram
+ * suspend code(arch/arm/mach-imx/suspend-imx6.S), if this struct
+ * definition is changed, the offset definition in
+ * arch/arm/mach-imx/suspend-imx6.S must be also changed accordingly,
+ * otherwise, the suspend to ocram function will be broken!
+ */
+struct imx6_cpu_pm_info {
+	phys_addr_t pbase; /* The physical address of pm_info. */
+	phys_addr_t resume_addr; /* The physical resume address for asm code */
+	u32 ddr_type;
+	u32 pm_info_size; /* Size of pm_info. */
+	struct imx6_pm_base mmdc_base;
+	struct imx6_pm_base src_base;
+	struct imx6_pm_base iomuxc_base;
+	struct imx6_pm_base ccm_base;
+	struct imx6_pm_base gpc_base;
+	struct imx6_pm_base l2_base;
+	u32 mmdc_io_num; /* Number of MMDC IOs which need saved/restored. */
+	u32 mmdc_io_val[MX6_MAX_MMDC_IO_NUM][2]; /* To save offset and value */
+} __aligned(8);
+
+void imx6_set_int_mem_clk_lpm(bool enable)
+{
+	u32 val = readl_relaxed(ccm_base + CGPR);
+
+	val &= ~BM_CGPR_INT_MEM_CLK_LPM;
+	if (enable)
+		val |= BM_CGPR_INT_MEM_CLK_LPM;
+	writel_relaxed(val, ccm_base + CGPR);
+}
+
+void imx6_enable_rbc(bool enable)
+{
+	u32 val;
+
+	/*
+	 * need to mask all interrupts in GPC before
+	 * operating RBC configurations
+	 */
+	imx_gpc_mask_all();
+
+	/* configure RBC enable bit */
+	val = readl_relaxed(ccm_base + CCR);
+	val &= ~BM_CCR_RBC_EN;
+	val |= enable ? BM_CCR_RBC_EN : 0;
+	writel_relaxed(val, ccm_base + CCR);
+
+	/* configure RBC count */
+	val = readl_relaxed(ccm_base + CCR);
+	val &= ~BM_CCR_RBC_BYPASS_COUNT;
+	val |= enable ? BM_CCR_RBC_BYPASS_COUNT : 0;
+	writel(val, ccm_base + CCR);
+
+	/*
+	 * need to delay at least 2 cycles of CKIL(32K)
+	 * due to hardware design requirement, which is
+	 * ~61us, here we use 65us for safe
+	 */
+	udelay(65);
+
+	/* restore GPC interrupt mask settings */
+	imx_gpc_restore_all();
+}
+
+static void imx6q_enable_wb(bool enable)
+{
+	u32 val;
+
+	/* configure well bias enable bit */
+	val = readl_relaxed(ccm_base + CLPCR);
+	val &= ~BM_CLPCR_WB_PER_AT_LPM;
+	val |= enable ? BM_CLPCR_WB_PER_AT_LPM : 0;
+	writel_relaxed(val, ccm_base + CLPCR);
+
+	/* configure well bias count */
+	val = readl_relaxed(ccm_base + CCR);
+	val &= ~BM_CCR_WB_COUNT;
+	val |= enable ? BM_CCR_WB_COUNT : 0;
+	writel_relaxed(val, ccm_base + CCR);
+}
+
+int imx6_set_lpm(enum mxc_cpu_pwr_mode mode)
+{
+	u32 val = readl_relaxed(ccm_base + CLPCR);
+
+	val &= ~BM_CLPCR_LPM;
+	switch (mode) {
+	case WAIT_CLOCKED:
+		break;
+	case WAIT_UNCLOCKED:
+		val |= 0x1 << BP_CLPCR_LPM;
+		val |= BM_CLPCR_ARM_CLK_DIS_ON_LPM;
+		break;
+	case STOP_POWER_ON:
+		val |= 0x2 << BP_CLPCR_LPM;
+		val &= ~BM_CLPCR_VSTBY;
+		val &= ~BM_CLPCR_SBYOS;
+		if (cpu_is_imx6sl())
+			val |= BM_CLPCR_BYPASS_PMIC_READY;
+		if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul() ||
+		    cpu_is_imx6ull() || cpu_is_imx6sll() || cpu_is_imx6ulz())
+			val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
+		else
+			val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
+		break;
+	case WAIT_UNCLOCKED_POWER_OFF:
+		val |= 0x1 << BP_CLPCR_LPM;
+		val &= ~BM_CLPCR_VSTBY;
+		val &= ~BM_CLPCR_SBYOS;
+		break;
+	case STOP_POWER_OFF:
+		val |= 0x2 << BP_CLPCR_LPM;
+		val |= 0x3 << BP_CLPCR_STBY_COUNT;
+		val |= BM_CLPCR_VSTBY;
+		val |= BM_CLPCR_SBYOS;
+		if (cpu_is_imx6sl() || cpu_is_imx6sx())
+			val |= BM_CLPCR_BYPASS_PMIC_READY;
+		if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul() ||
+		    cpu_is_imx6ull() || cpu_is_imx6sll() || cpu_is_imx6ulz())
+			val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
+		else
+			val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * ERR007265: CCM: When improper low-power sequence is used,
+	 * the SoC enters low power mode before the ARM core executes WFI.
+	 *
+	 * Software workaround:
+	 * 1) Software should trigger IRQ #32 (IOMUX) to be always pending
+	 *    by setting IOMUX_GPR1_GINT.
+	 * 2) Software should then unmask IRQ #32 in GPC before setting CCM
+	 *    Low-Power mode.
+	 * 3) Software should mask IRQ #32 right after CCM Low-Power mode
+	 *    is set (set bits 0-1 of CCM_CLPCR).
+	 *
+	 * Note that IRQ #32 is GIC SPI #0.
+	 */
+	if (mode != WAIT_CLOCKED)
+		imx_gpc_hwirq_unmask(0);
+	writel_relaxed(val, ccm_base + CLPCR);
+	if (mode != WAIT_CLOCKED)
+		imx_gpc_hwirq_mask(0);
+
+	return 0;
+}
+
+static int imx6q_suspend_finish(unsigned long val)
+{
+	if (!imx6_suspend_in_ocram_fn) {
+		cpu_do_idle();
+	} else {
+		/*
+		 * call low level suspend function in ocram,
+		 * as we need to float DDR IO.
+		 */
+		local_flush_tlb_all();
+		/* check if need to flush internal L2 cache */
+		if (!((struct imx6_cpu_pm_info *)
+			suspend_ocram_base)->l2_base.vbase)
+			flush_cache_all();
+		imx6_suspend_in_ocram_fn(suspend_ocram_base);
+	}
+
+	return 0;
+}
+
+static int imx6q_pm_enter(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_STANDBY:
+		imx6_set_lpm(STOP_POWER_ON);
+		imx6_set_int_mem_clk_lpm(true);
+		imx_gpc_pre_suspend(false);
+		if (cpu_is_imx6sl())
+			imx6sl_set_wait_clk(true);
+		/* Zzz ... */
+		cpu_do_idle();
+		if (cpu_is_imx6sl())
+			imx6sl_set_wait_clk(false);
+		imx_gpc_post_resume();
+		imx6_set_lpm(WAIT_CLOCKED);
+		break;
+	case PM_SUSPEND_MEM:
+		imx6_set_lpm(STOP_POWER_OFF);
+		imx6_set_int_mem_clk_lpm(false);
+		imx6q_enable_wb(true);
+		/*
+		 * For suspend into ocram, asm code already take care of
+		 * RBC setting, so we do NOT need to do that here.
+		 */
+		if (!imx6_suspend_in_ocram_fn)
+			imx6_enable_rbc(true);
+		imx_gpc_pre_suspend(true);
+		imx_anatop_pre_suspend();
+		/* Zzz ... */
+		cpu_suspend(0, imx6q_suspend_finish);
+		if (cpu_is_imx6q() || cpu_is_imx6dl())
+			imx_smp_prepare();
+		imx_anatop_post_resume();
+		imx_gpc_post_resume();
+		imx6_enable_rbc(false);
+		imx6q_enable_wb(false);
+		imx6_set_int_mem_clk_lpm(true);
+		imx6_set_lpm(WAIT_CLOCKED);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int imx6q_pm_valid(suspend_state_t state)
+{
+	return (state == PM_SUSPEND_STANDBY || state == PM_SUSPEND_MEM);
+}
+
+static const struct platform_suspend_ops imx6q_pm_ops = {
+	.enter = imx6q_pm_enter,
+	.valid = imx6q_pm_valid,
+};
+
+static int __init imx6_pm_get_base(struct imx6_pm_base *base,
+				const char *compat)
+{
+	struct device_node *node;
+	struct resource res;
+	int ret = 0;
+
+	node = of_find_compatible_node(NULL, NULL, compat);
+	if (!node)
+		return -ENODEV;
+
+	ret = of_address_to_resource(node, 0, &res);
+	if (ret)
+		goto put_node;
+
+	base->pbase = res.start;
+	base->vbase = ioremap(res.start, resource_size(&res));
+	if (!base->vbase)
+		ret = -ENOMEM;
+
+put_node:
+	of_node_put(node);
+	return ret;
+}
+
+static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
+{
+	phys_addr_t ocram_pbase;
+	struct device_node *node;
+	struct platform_device *pdev;
+	struct imx6_cpu_pm_info *pm_info;
+	struct gen_pool *ocram_pool;
+	unsigned long ocram_base;
+	int i, ret = 0;
+	const u32 *mmdc_offset_array;
+
+	suspend_set_ops(&imx6q_pm_ops);
+
+	if (!socdata) {
+		pr_warn("%s: invalid argument!\n", __func__);
+		return -EINVAL;
+	}
+
+	node = of_find_compatible_node(NULL, NULL, "mmio-sram");
+	if (!node) {
+		pr_warn("%s: failed to find ocram node!\n", __func__);
+		return -ENODEV;
+	}
+
+	pdev = of_find_device_by_node(node);
+	if (!pdev) {
+		pr_warn("%s: failed to find ocram device!\n", __func__);
+		ret = -ENODEV;
+		goto put_node;
+	}
+
+	ocram_pool = gen_pool_get(&pdev->dev, NULL);
+	if (!ocram_pool) {
+		pr_warn("%s: ocram pool unavailable!\n", __func__);
+		ret = -ENODEV;
+		goto put_device;
+	}
+
+	ocram_base = gen_pool_alloc(ocram_pool, MX6Q_SUSPEND_OCRAM_SIZE);
+	if (!ocram_base) {
+		pr_warn("%s: unable to alloc ocram!\n", __func__);
+		ret = -ENOMEM;
+		goto put_device;
+	}
+
+	ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base);
+
+	suspend_ocram_base = __arm_ioremap_exec(ocram_pbase,
+		MX6Q_SUSPEND_OCRAM_SIZE, false);
+
+	memset(suspend_ocram_base, 0, sizeof(*pm_info));
+	pm_info = suspend_ocram_base;
+	pm_info->pbase = ocram_pbase;
+	pm_info->resume_addr = __pa_symbol(v7_cpu_resume);
+	pm_info->pm_info_size = sizeof(*pm_info);
+
+	/*
+	 * ccm physical address is not used by asm code currently,
+	 * so get ccm virtual address directly.
+	 */
+	pm_info->ccm_base.vbase = ccm_base;
+
+	ret = imx6_pm_get_base(&pm_info->mmdc_base, socdata->mmdc_compat);
+	if (ret) {
+		pr_warn("%s: failed to get mmdc base %d!\n", __func__, ret);
+		goto put_device;
+	}
+
+	ret = imx6_pm_get_base(&pm_info->src_base, socdata->src_compat);
+	if (ret) {
+		pr_warn("%s: failed to get src base %d!\n", __func__, ret);
+		goto src_map_failed;
+	}
+
+	ret = imx6_pm_get_base(&pm_info->iomuxc_base, socdata->iomuxc_compat);
+	if (ret) {
+		pr_warn("%s: failed to get iomuxc base %d!\n", __func__, ret);
+		goto iomuxc_map_failed;
+	}
+
+	ret = imx6_pm_get_base(&pm_info->gpc_base, socdata->gpc_compat);
+	if (ret) {
+		pr_warn("%s: failed to get gpc base %d!\n", __func__, ret);
+		goto gpc_map_failed;
+	}
+
+	if (socdata->pl310_compat) {
+		ret = imx6_pm_get_base(&pm_info->l2_base, socdata->pl310_compat);
+		if (ret) {
+			pr_warn("%s: failed to get pl310-cache base %d!\n",
+				__func__, ret);
+			goto pl310_cache_map_failed;
+		}
+	}
+
+	pm_info->ddr_type = imx_mmdc_get_ddr_type();
+	pm_info->mmdc_io_num = socdata->mmdc_io_num;
+	mmdc_offset_array = socdata->mmdc_io_offset;
+
+	for (i = 0; i < pm_info->mmdc_io_num; i++) {
+		pm_info->mmdc_io_val[i][0] =
+			mmdc_offset_array[i];
+		pm_info->mmdc_io_val[i][1] =
+			readl_relaxed(pm_info->iomuxc_base.vbase +
+			mmdc_offset_array[i]);
+	}
+
+	imx6_suspend_in_ocram_fn = fncpy(
+		suspend_ocram_base + sizeof(*pm_info),
+		&imx6_suspend,
+		MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info));
+
+	__arm_iomem_set_ro(suspend_ocram_base, MX6Q_SUSPEND_OCRAM_SIZE);
+
+	goto put_device;
+
+pl310_cache_map_failed:
+	iounmap(pm_info->gpc_base.vbase);
+gpc_map_failed:
+	iounmap(pm_info->iomuxc_base.vbase);
+iomuxc_map_failed:
+	iounmap(pm_info->src_base.vbase);
+src_map_failed:
+	iounmap(pm_info->mmdc_base.vbase);
+put_device:
+	put_device(&pdev->dev);
+put_node:
+	of_node_put(node);
+
+	return ret;
+}
+
+static void __init imx6_pm_common_init(const struct imx6_pm_socdata
+					*socdata)
+{
+	struct regmap *gpr;
+	int ret;
+
+	WARN_ON(!ccm_base);
+
+	if (IS_ENABLED(CONFIG_SUSPEND)) {
+		ret = imx6q_suspend_init(socdata);
+		if (ret)
+			pr_warn("%s: No DDR LPM support with suspend %d!\n",
+				__func__, ret);
+	}
+
+	/*
+	 * This is for SW workaround step #1 of ERR007265, see comments
+	 * in imx6_set_lpm for details of this errata.
+	 * Force IOMUXC irq pending, so that the interrupt to GPC can be
+	 * used to deassert dsm_request signal when the signal gets
+	 * asserted unexpectedly.
+	 */
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+	if (!IS_ERR(gpr))
+		regmap_update_bits(gpr, IOMUXC_GPR1, IMX6Q_GPR1_GINT,
+				   IMX6Q_GPR1_GINT);
+}
+
+static void imx6_pm_stby_poweroff(void)
+{
+	gic_cpu_if_down(0);
+	imx6_set_lpm(STOP_POWER_OFF);
+	imx6q_suspend_finish(0);
+
+	mdelay(1000);
+
+	pr_emerg("Unable to poweroff system\n");
+}
+
+static int imx6_pm_stby_poweroff_probe(void)
+{
+	if (register_platform_power_off(imx6_pm_stby_poweroff)) {
+		pr_warn("%s: platform power off already claimed!\n", __func__);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+void __init imx6_pm_ccm_init(const char *ccm_compat)
+{
+	struct device_node *np;
+	u32 val;
+
+	np = of_find_compatible_node(NULL, NULL, ccm_compat);
+	ccm_base = of_iomap(np, 0);
+	BUG_ON(!ccm_base);
+
+	/*
+	 * Initialize CCM_CLPCR_LPM into RUN mode to avoid ARM core
+	 * clock being shut down unexpectedly by WAIT mode.
+	 */
+	val = readl_relaxed(ccm_base + CLPCR);
+	val &= ~BM_CLPCR_LPM;
+	writel_relaxed(val, ccm_base + CLPCR);
+
+	if (of_property_read_bool(np, "fsl,pmic-stby-poweroff"))
+		imx6_pm_stby_poweroff_probe();
+
+	of_node_put(np);
+}
+
+void __init imx6q_pm_init(void)
+{
+	imx6_pm_common_init(&imx6q_pm_data);
+}
+
+void __init imx6dl_pm_init(void)
+{
+	imx6_pm_common_init(&imx6dl_pm_data);
+}
+
+void __init imx6sl_pm_init(void)
+{
+	struct regmap *gpr;
+
+	if (cpu_is_imx6sl()) {
+		imx6_pm_common_init(&imx6sl_pm_data);
+	} else {
+		imx6_pm_common_init(&imx6sll_pm_data);
+		gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+		if (!IS_ERR(gpr))
+			regmap_update_bits(gpr, IOMUXC_GPR5,
+				IMX6SLL_GPR5_AFCG_X_BYPASS_MASK, 0);
+	}
+}
+
+void __init imx6sx_pm_init(void)
+{
+	imx6_pm_common_init(&imx6sx_pm_data);
+}
+
+void __init imx6ul_pm_init(void)
+{
+	imx6_pm_common_init(&imx6ul_pm_data);
+}
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017-2018 NXP
+ *   Author: Dong Aisheng <aisheng.dong@nxp.com>
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "common.h"
+
+#define SMC_PMCTRL		0x10
+#define BP_PMCTRL_PSTOPO        16
+#define PSTOPO_PSTOP3		0x3
+#define PSTOPO_PSTOP2		0x2
+#define PSTOPO_PSTOP1		0x1
+#define BP_PMCTRL_RUNM		8
+#define RUNM_RUN		0
+#define BP_PMCTRL_STOPM		0
+#define STOPM_STOP		0
+
+#define BM_PMCTRL_PSTOPO	(3 << BP_PMCTRL_PSTOPO)
+#define BM_PMCTRL_RUNM		(3 << BP_PMCTRL_RUNM)
+#define BM_PMCTRL_STOPM		(7 << BP_PMCTRL_STOPM)
+
+static void __iomem *smc1_base;
+
+int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode)
+{
+	u32 val = readl_relaxed(smc1_base + SMC_PMCTRL);
+
+	/* clear all */
+	val &= ~(BM_PMCTRL_RUNM | BM_PMCTRL_STOPM | BM_PMCTRL_PSTOPO);
+
+	switch (mode) {
+	case ULP_PM_RUN:
+		/* system/bus clock enabled */
+		val |= PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO;
+		break;
+	case ULP_PM_WAIT:
+		/* system clock disabled, bus clock enabled */
+		val |= PSTOPO_PSTOP2 << BP_PMCTRL_PSTOPO;
+		break;
+	case ULP_PM_STOP:
+		/* system/bus clock disabled */
+		val |= PSTOPO_PSTOP1 << BP_PMCTRL_PSTOPO;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	writel_relaxed(val, smc1_base + SMC_PMCTRL);
+
+	return 0;
+}
+
+void __init imx7ulp_pm_init(void)
+{
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1");
+	smc1_base = of_iomap(np, 0);
+	of_node_put(np);
+	WARN_ON(!smc1_base);
+
+	imx7ulp_set_lpm(ULP_PM_RUN);
+}
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/asm-offsets.h>
+#include <asm/hardware/cache-l2x0.h>
+#include "hardware.h"
+
+.arch armv7-a
+
+/*
+ * The following code must assume it is running from physical address
+ * where absolute virtual addresses to the data section have to be
+ * turned into relative ones.
+ */
+
+ENTRY(v7_cpu_resume)
+	bl	v7_invalidate_l1
+#ifdef CONFIG_CACHE_L2X0
+	bl	l2c310_early_resume
+#endif
+	b	cpu_resume
+ENDPROC(v7_cpu_resume)
@@ -0,0 +1,238 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/smp.h>
+#include <asm/smp_plat.h>
+#include "common.h"
+#include "hardware.h"
+
+#define SRC_SCR				0x000
+#define SRC_GPR1_V1			0x020
+#define SRC_GPR1_V2			0x074
+#define SRC_GPR1(gpr_v2)		((gpr_v2) ? SRC_GPR1_V2 : SRC_GPR1_V1)
+#define BP_SRC_SCR_WARM_RESET_ENABLE	0
+#define BP_SRC_SCR_SW_GPU_RST		1
+#define BP_SRC_SCR_SW_VPU_RST		2
+#define BP_SRC_SCR_SW_IPU1_RST		3
+#define BP_SRC_SCR_SW_OPEN_VG_RST	4
+#define BP_SRC_SCR_SW_IPU2_RST		12
+#define BP_SRC_SCR_CORE1_RST		14
+#define BP_SRC_SCR_CORE1_ENABLE		22
+/* below is for i.MX7D */
+#define SRC_A7RCR1			0x008
+#define BP_SRC_A7RCR1_A7_CORE1_ENABLE	1
+#define GPC_CPU_PGC_SW_PUP_REQ		0xf0
+#define GPC_CPU_PGC_SW_PDN_REQ		0xfc
+#define GPC_PGC_C1			0x840
+#define BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7	0x2
+
+static void __iomem *src_base;
+static DEFINE_SPINLOCK(scr_lock);
+static bool gpr_v2;
+static void __iomem *gpc_base;
+
+static const int sw_reset_bits[5] = {
+	BP_SRC_SCR_SW_GPU_RST,
+	BP_SRC_SCR_SW_VPU_RST,
+	BP_SRC_SCR_SW_IPU1_RST,
+	BP_SRC_SCR_SW_OPEN_VG_RST,
+	BP_SRC_SCR_SW_IPU2_RST
+};
+
+static int imx_src_reset_module(struct reset_controller_dev *rcdev,
+		unsigned long sw_reset_idx)
+{
+	unsigned long timeout;
+	unsigned long flags;
+	int bit;
+	u32 val;
+
+	if (sw_reset_idx >= ARRAY_SIZE(sw_reset_bits))
+		return -EINVAL;
+
+	bit = 1 << sw_reset_bits[sw_reset_idx];
+
+	spin_lock_irqsave(&scr_lock, flags);
+	val = readl_relaxed(src_base + SRC_SCR);
+	val |= bit;
+	writel_relaxed(val, src_base + SRC_SCR);
+	spin_unlock_irqrestore(&scr_lock, flags);
+
+	timeout = jiffies + msecs_to_jiffies(1000);
+	while (readl(src_base + SRC_SCR) & bit) {
+		if (time_after(jiffies, timeout))
+			return -ETIME;
+		cpu_relax();
+	}
+
+	return 0;
+}
+
+static const struct reset_control_ops imx_src_ops = {
+	.reset = imx_src_reset_module,
+};
+
+static void imx_gpcv2_set_m_core_pgc(bool enable, u32 offset)
+{
+	writel_relaxed(enable, gpc_base + offset);
+}
+
+/*
+ * The motivation for bringing up the second i.MX7D core inside the kernel
+ * is that legacy vendor bootloaders usually do not implement PSCI support.
+ * This is a significant blocker for systems in the field that are running old
+ * bootloader versions to upgrade to a modern mainline kernel version, as only
+ * one CPU of the i.MX7D would be brought up.
+ * Bring up the second i.MX7D core inside the kernel to make the migration
+ * path to mainline kernel easier for the existing iMX7D users.
+ */
+void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn)
+{
+	u32 reg = pdn ? GPC_CPU_PGC_SW_PDN_REQ : GPC_CPU_PGC_SW_PUP_REQ;
+	u32 val, pup;
+	int ret;
+
+	imx_gpcv2_set_m_core_pgc(true, GPC_PGC_C1);
+	val = readl_relaxed(gpc_base + reg);
+	val |= BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
+	writel_relaxed(val, gpc_base + reg);
+
+	ret = readl_relaxed_poll_timeout_atomic(gpc_base + reg, pup,
+				!(pup & BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7),
+				5, 1000000);
+	if (ret < 0) {
+		pr_err("i.MX7D: CORE1_A7 power up timeout\n");
+		val &= ~BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
+		writel_relaxed(val, gpc_base + reg);
+	}
+
+	imx_gpcv2_set_m_core_pgc(false, GPC_PGC_C1);
+}
+
+void imx_enable_cpu(int cpu, bool enable)
+{
+	u32 mask, val;
+
+	cpu = cpu_logical_map(cpu);
+	spin_lock(&scr_lock);
+	if (gpr_v2) {
+		if (enable)
+			imx_gpcv2_set_core1_pdn_pup_by_software(false);
+
+		mask = 1 << (BP_SRC_A7RCR1_A7_CORE1_ENABLE + cpu - 1);
+		val = readl_relaxed(src_base + SRC_A7RCR1);
+		val = enable ? val | mask : val & ~mask;
+		writel_relaxed(val, src_base + SRC_A7RCR1);
+	} else {
+		mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1);
+		val = readl_relaxed(src_base + SRC_SCR);
+		val = enable ? val | mask : val & ~mask;
+		val |= 1 << (BP_SRC_SCR_CORE1_RST + cpu - 1);
+		writel_relaxed(val, src_base + SRC_SCR);
+	}
+	spin_unlock(&scr_lock);
+}
+
+void imx_set_cpu_jump(int cpu, void *jump_addr)
+{
+	cpu = cpu_logical_map(cpu);
+	writel_relaxed(__pa_symbol(jump_addr),
+		       src_base + SRC_GPR1(gpr_v2) + cpu * 8);
+}
+
+u32 imx_get_cpu_arg(int cpu)
+{
+	cpu = cpu_logical_map(cpu);
+	return readl_relaxed(src_base + SRC_GPR1(gpr_v2) + cpu * 8 + 4);
+}
+
+void imx_set_cpu_arg(int cpu, u32 arg)
+{
+	cpu = cpu_logical_map(cpu);
+	writel_relaxed(arg, src_base + SRC_GPR1(gpr_v2) + cpu * 8 + 4);
+}
+
+void __init imx_src_init(void)
+{
+	struct device_node *np;
+	u32 val;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx51-src");
+	if (!np)
+		return;
+	src_base = of_iomap(np, 0);
+	WARN_ON(!src_base);
+
+	/*
+	 * force warm reset sources to generate cold reset
+	 * for a more reliable restart
+	 */
+	spin_lock(&scr_lock);
+	val = readl_relaxed(src_base + SRC_SCR);
+	val &= ~(1 << BP_SRC_SCR_WARM_RESET_ENABLE);
+	writel_relaxed(val, src_base + SRC_SCR);
+	spin_unlock(&scr_lock);
+}
+
+void __init imx7_src_init(void)
+{
+	struct device_node *np;
+
+	gpr_v2 = true;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx7d-src");
+	if (!np)
+		return;
+
+	src_base = of_iomap(np, 0);
+	if (!src_base)
+		return;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx7d-gpc");
+	if (!np)
+		return;
+
+	gpc_base = of_iomap(np, 0);
+	if (!gpc_base)
+		return;
+}
+
+static const struct of_device_id imx_src_dt_ids[] = {
+	{ .compatible = "fsl,imx51-src" },
+	{ /* sentinel */ }
+};
+
+static int imx_src_probe(struct platform_device *pdev)
+{
+	struct reset_controller_dev *rcdev;
+
+	rcdev = devm_kzalloc(&pdev->dev, sizeof(*rcdev), GFP_KERNEL);
+	if (!rcdev)
+		return -ENOMEM;
+
+	rcdev->ops = &imx_src_ops;
+	rcdev->dev = &pdev->dev;
+	rcdev->of_node = pdev->dev.of_node;
+	rcdev->nr_resets = ARRAY_SIZE(sw_reset_bits);
+
+	return devm_reset_controller_register(&pdev->dev, rcdev);
+}
+
+static struct platform_driver imx_src_driver = {
+	.driver = {
+		.name = "imx-src",
+		.of_match_table = imx_src_dt_ids,
+	},
+	.probe = imx_src_probe,
+};
+builtin_platform_driver(imx_src_driver);
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Exported ksyms for the SSI FIQ handler
+ *
+ * Copyright (C) 2009, Sascha Hauer <s.hauer@pengutronix.de>
+ */
+
+#include <linux/module.h>
+
+#include <linux/platform_data/asoc-imx-ssi.h>
+
+EXPORT_SYMBOL(imx_ssi_fiq_tx_buffer);
+EXPORT_SYMBOL(imx_ssi_fiq_rx_buffer);
+EXPORT_SYMBOL(imx_ssi_fiq_start);
+EXPORT_SYMBOL(imx_ssi_fiq_end);
+EXPORT_SYMBOL(imx_ssi_fiq_base);
+
@@ -0,0 +1,144 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  Copyright (C) 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+/*
+ * r8  = bit 0-15: tx offset, bit 16-31: tx buffer size
+ * r9  = bit 0-15: rx offset, bit 16-31: rx buffer size
+ */
+
+#define SSI_STX0	0x00
+#define SSI_SRX0	0x08
+#define SSI_SISR	0x14
+#define SSI_SIER	0x18
+#define SSI_SACNT	0x38
+
+#define SSI_SACNT_AC97EN	(1 << 0)
+
+#define SSI_SIER_TFE0_EN	(1 << 0)
+#define SSI_SISR_TFE0		(1 << 0)
+#define SSI_SISR_RFF0		(1 << 2)
+#define SSI_SIER_RFF0_EN	(1 << 2)
+
+		.text
+		.global	imx_ssi_fiq_start
+		.global	imx_ssi_fiq_end
+		.global imx_ssi_fiq_base
+		.global imx_ssi_fiq_rx_buffer
+		.global imx_ssi_fiq_tx_buffer
+
+/*
+ * imx_ssi_fiq_start is _intentionally_ not marked as a function symbol
+ * using ENDPROC().  imx_ssi_fiq_start and imx_ssi_fiq_end are used to
+ * mark the function body so that it can be copied to the FIQ vector in
+ * the vectors page.  imx_ssi_fiq_start should only be called as the result
+ * of an FIQ: calling it directly will not work.
+ */
+imx_ssi_fiq_start:
+		ldr r12, .L_imx_ssi_fiq_base
+
+		/* TX */
+		ldr r13, .L_imx_ssi_fiq_tx_buffer
+
+		/* shall we send? */
+		ldr r11, [r12, #SSI_SIER]
+		tst r11, #SSI_SIER_TFE0_EN
+		beq 1f
+
+		/* TX FIFO empty? */
+		ldr r11, [r12, #SSI_SISR]
+		tst r11, #SSI_SISR_TFE0
+		beq 1f
+
+		mov r10, #0x10000
+		sub r10, #1
+		and r10, r10, r8	/* r10: current buffer offset */
+
+		add r13, r13, r10
+
+		ldrh r11, [r13]
+		strh r11, [r12, #SSI_STX0]
+
+		ldrh r11, [r13, #2]
+		strh r11, [r12, #SSI_STX0]
+
+		ldrh r11, [r13, #4]
+		strh r11, [r12, #SSI_STX0]
+
+		ldrh r11, [r13, #6]
+		strh r11, [r12, #SSI_STX0]
+
+		add r10, #8
+		lsr r11, r8, #16	/* r11: buffer size */
+		cmp r10, r11
+		lslgt r8, r11, #16
+		addle r8, #8
+1:
+		/* RX */
+
+		/* shall we receive? */
+		ldr r11, [r12, #SSI_SIER]
+		tst r11, #SSI_SIER_RFF0_EN
+		beq 1f
+
+		/* RX FIFO full? */
+		ldr r11, [r12, #SSI_SISR]
+		tst r11, #SSI_SISR_RFF0
+		beq 1f
+
+		ldr r13, .L_imx_ssi_fiq_rx_buffer
+
+		mov r10, #0x10000
+		sub r10, #1
+		and r10, r10, r9	/* r10: current buffer offset */
+
+		add r13, r13, r10
+
+		ldr r11, [r12, #SSI_SACNT]
+		tst r11, #SSI_SACNT_AC97EN
+
+		ldr r11, [r12, #SSI_SRX0]
+		strh r11, [r13]
+
+		ldr r11, [r12, #SSI_SRX0]
+		strh r11, [r13, #2]
+
+		/* dummy read to skip slot 12 */
+		ldrne r11, [r12, #SSI_SRX0]
+
+		ldr r11, [r12, #SSI_SRX0]
+		strh r11, [r13, #4]
+
+		ldr r11, [r12, #SSI_SRX0]
+		strh r11, [r13, #6]
+
+		/* dummy read to skip slot 12 */
+		ldrne r11, [r12, #SSI_SRX0]
+
+		add r10, #8
+		lsr r11, r9, #16	/* r11: buffer size */
+		cmp r10, r11
+		lslgt r9, r11, #16
+		addle r9, #8
+
+1:
+		@ return from FIQ
+		subs	pc, lr, #4
+
+		.align
+.L_imx_ssi_fiq_base:
+imx_ssi_fiq_base:
+		.word 0x0
+.L_imx_ssi_fiq_rx_buffer:
+imx_ssi_fiq_rx_buffer:
+		.word 0x0
+.L_imx_ssi_fiq_tx_buffer:
+imx_ssi_fiq_tx_buffer:
+		.word 0x0
+.L_imx_ssi_fiq_end:
+imx_ssi_fiq_end:
+
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2008-2011 Freescale Semiconductor, Inc.
+ */
+/*
+ */
+
+#include <linux/linkage.h>
+
+#define M4IF_MCR0_OFFSET			(0x008C)
+#define M4IF_MCR0_FDVFS				(0x1 << 11)
+#define M4IF_MCR0_FDVACK			(0x1 << 27)
+
+	.align 3
+
+/*
+ * ==================== low level suspend ====================
+ *
+ * On entry
+ * r0: pm_info structure address;
+ *
+ * suspend ocram space layout:
+ * ======================== high address ======================
+ *                              .
+ *                              .
+ *                              .
+ *                              ^
+ *                              ^
+ *                              ^
+ *                      imx53_suspend code
+ *              PM_INFO structure(imx5_cpu_suspend_info)
+ * ======================== low address =======================
+ */
+
+/* Offsets of members of struct imx5_cpu_suspend_info */
+#define SUSPEND_INFO_MX53_M4IF_V_OFFSET		0x0
+#define SUSPEND_INFO_MX53_IOMUXC_V_OFFSET	0x4
+#define SUSPEND_INFO_MX53_IO_COUNT_OFFSET	0x8
+#define SUSPEND_INFO_MX53_IO_STATE_OFFSET	0xc
+
+ENTRY(imx53_suspend)
+	stmfd	sp!, {r4,r5,r6,r7}
+
+	/* Save pad config */
+	ldr	r1, [r0, #SUSPEND_INFO_MX53_IO_COUNT_OFFSET]
+	cmp	r1, #0
+	beq	skip_pad_conf_1
+
+	add	r2, r0, #SUSPEND_INFO_MX53_IO_STATE_OFFSET
+	ldr	r3, [r0, #SUSPEND_INFO_MX53_IOMUXC_V_OFFSET]
+
+1:
+	ldr	r5, [r2], #12	/* IOMUXC register offset */
+	ldr	r6, [r3, r5]	/* current value */
+	str	r6, [r2], #4	/* save area */
+	subs	r1, r1, #1
+	bne	1b
+
+skip_pad_conf_1:
+	/* Set FDVFS bit of M4IF_MCR0 to request DDR to enter self-refresh */
+	ldr	r1, [r0, #SUSPEND_INFO_MX53_M4IF_V_OFFSET]
+	ldr	r2,[r1, #M4IF_MCR0_OFFSET]
+	orr	r2, r2, #M4IF_MCR0_FDVFS
+	str	r2,[r1, #M4IF_MCR0_OFFSET]
+
+	/* Poll FDVACK bit of M4IF_MCR to wait for DDR to enter self-refresh */
+wait_sr_ack:
+	ldr	r2,[r1, #M4IF_MCR0_OFFSET]
+	ands	r2, r2, #M4IF_MCR0_FDVACK
+	beq	wait_sr_ack
+
+	/* Set pad config */
+	ldr	r1, [r0, #SUSPEND_INFO_MX53_IO_COUNT_OFFSET]
+	cmp	r1, #0
+	beq	skip_pad_conf_2
+
+	add	r2, r0, #SUSPEND_INFO_MX53_IO_STATE_OFFSET
+	ldr	r3, [r0, #SUSPEND_INFO_MX53_IOMUXC_V_OFFSET]
+
+2:
+	ldr	r5, [r2], #4	/* IOMUXC register offset */
+	ldr	r6, [r2], #4	/* clear */
+	ldr	r7, [r3, r5]
+	bic	r7, r7, r6
+	ldr	r6, [r2], #8	/* set */
+	orr	r7, r7, r6
+	str	r7, [r3, r5]
+	subs	r1, r1, #1
+	bne	2b
+
+skip_pad_conf_2:
+	/* Zzz, enter stop mode */
+	wfi
+	nop
+	nop
+	nop
+	nop
+
+	/* Restore pad config */
+	ldr	r1, [r0, #SUSPEND_INFO_MX53_IO_COUNT_OFFSET]
+	cmp	r1, #0
+	beq	skip_pad_conf_3
+
+	add	r2, r0, #SUSPEND_INFO_MX53_IO_STATE_OFFSET
+	ldr	r3, [r0, #SUSPEND_INFO_MX53_IOMUXC_V_OFFSET]
+
+3:
+	ldr	r5, [r2], #12	/* IOMUXC register offset */
+	ldr	r6, [r2], #4	/* saved value */
+	str	r6, [r3, r5]
+	subs	r1, r1, #1
+	bne	3b
+
+skip_pad_conf_3:
+	/* Clear FDVFS bit of M4IF_MCR0 to request DDR to exit self-refresh */
+	ldr	r1, [r0, #SUSPEND_INFO_MX53_M4IF_V_OFFSET]
+	ldr	r2,[r1, #M4IF_MCR0_OFFSET]
+	bic	r2, r2, #M4IF_MCR0_FDVFS
+	str	r2,[r1, #M4IF_MCR0_OFFSET]
+
+	/* Poll FDVACK bit of M4IF_MCR to wait for DDR to exit self-refresh */
+wait_ar_ack:
+	ldr	r2,[r1, #M4IF_MCR0_OFFSET]
+	ands	r2, r2, #M4IF_MCR0_FDVACK
+	bne	wait_ar_ack
+
+	/* Restore registers */
+	ldmfd	sp!, {r4,r5,r6,r7}
+	mov	pc, lr
+
+ENDPROC(imx53_suspend)
+
+ENTRY(imx53_suspend_sz)
+        .word   . - imx53_suspend
@@ -0,0 +1,332 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include <asm/asm-offsets.h>
+#include <asm/hardware/cache-l2x0.h>
+#include "hardware.h"
+
+.arch armv7-a
+
+/*
+ * ==================== low level suspend ====================
+ *
+ * Better to follow below rules to use ARM registers:
+ * r0: pm_info structure address;
+ * r1 ~ r4: for saving pm_info members;
+ * r5 ~ r10: free registers;
+ * r11: io base address.
+ *
+ * suspend ocram space layout:
+ * ======================== high address ======================
+ *                              .
+ *                              .
+ *                              .
+ *                              ^
+ *                              ^
+ *                              ^
+ *                      imx6_suspend code
+ *              PM_INFO structure(imx6_cpu_pm_info)
+ * ======================== low address =======================
+ */
+
+/*
+ * Below offsets are based on struct imx6_cpu_pm_info
+ * which defined in arch/arm/mach-imx/pm-imx6q.c, this
+ * structure contains necessary pm info for low level
+ * suspend related code.
+ */
+#define PM_INFO_PBASE_OFFSET			0x0
+#define PM_INFO_RESUME_ADDR_OFFSET		0x4
+#define PM_INFO_DDR_TYPE_OFFSET			0x8
+#define PM_INFO_PM_INFO_SIZE_OFFSET		0xC
+#define PM_INFO_MX6Q_MMDC_P_OFFSET		0x10
+#define PM_INFO_MX6Q_MMDC_V_OFFSET		0x14
+#define PM_INFO_MX6Q_SRC_P_OFFSET		0x18
+#define PM_INFO_MX6Q_SRC_V_OFFSET		0x1C
+#define PM_INFO_MX6Q_IOMUXC_P_OFFSET		0x20
+#define PM_INFO_MX6Q_IOMUXC_V_OFFSET		0x24
+#define PM_INFO_MX6Q_CCM_P_OFFSET		0x28
+#define PM_INFO_MX6Q_CCM_V_OFFSET		0x2C
+#define PM_INFO_MX6Q_GPC_P_OFFSET		0x30
+#define PM_INFO_MX6Q_GPC_V_OFFSET		0x34
+#define PM_INFO_MX6Q_L2_P_OFFSET		0x38
+#define PM_INFO_MX6Q_L2_V_OFFSET		0x3C
+#define PM_INFO_MMDC_IO_NUM_OFFSET		0x40
+#define PM_INFO_MMDC_IO_VAL_OFFSET		0x44
+
+#define MX6Q_SRC_GPR1	0x20
+#define MX6Q_SRC_GPR2	0x24
+#define MX6Q_MMDC_MAPSR	0x404
+#define MX6Q_MMDC_MPDGCTRL0	0x83c
+#define MX6Q_GPC_IMR1	0x08
+#define MX6Q_GPC_IMR2	0x0c
+#define MX6Q_GPC_IMR3	0x10
+#define MX6Q_GPC_IMR4	0x14
+#define MX6Q_CCM_CCR	0x0
+
+	.align 3
+	.arm
+
+	.macro  sync_l2_cache
+
+	/* sync L2 cache to drain L2's buffers to DRAM. */
+#ifdef CONFIG_CACHE_L2X0
+	ldr	r11, [r0, #PM_INFO_MX6Q_L2_V_OFFSET]
+	teq	r11, #0
+	beq	6f
+	mov	r6, #0x0
+	str	r6, [r11, #L2X0_CACHE_SYNC]
+1:
+	ldr	r6, [r11, #L2X0_CACHE_SYNC]
+	ands	r6, r6, #0x1
+	bne	1b
+6:
+#endif
+
+	.endm
+
+	.macro	resume_mmdc
+
+	/* restore MMDC IO */
+	cmp	r5, #0x0
+	ldreq	r11, [r0, #PM_INFO_MX6Q_IOMUXC_V_OFFSET]
+	ldrne	r11, [r0, #PM_INFO_MX6Q_IOMUXC_P_OFFSET]
+
+	ldr	r6, [r0, #PM_INFO_MMDC_IO_NUM_OFFSET]
+	ldr	r7, =PM_INFO_MMDC_IO_VAL_OFFSET
+	add	r7, r7, r0
+1:
+	ldr	r8, [r7], #0x4
+	ldr	r9, [r7], #0x4
+	str	r9, [r11, r8]
+	subs	r6, r6, #0x1
+	bne	1b
+
+	cmp	r5, #0x0
+	ldreq	r11, [r0, #PM_INFO_MX6Q_MMDC_V_OFFSET]
+	ldrne	r11, [r0, #PM_INFO_MX6Q_MMDC_P_OFFSET]
+
+	cmp	r3, #IMX_DDR_TYPE_LPDDR2
+	bne	4f
+
+	/* reset read FIFO, RST_RD_FIFO */
+	ldr	r7, =MX6Q_MMDC_MPDGCTRL0
+	ldr	r6, [r11, r7]
+	orr     r6, r6, #(1 << 31)
+	str	r6, [r11, r7]
+2:
+	ldr	r6, [r11, r7]
+	ands	r6, r6, #(1 << 31)
+	bne	2b
+
+	/* reset FIFO a second time */
+	ldr	r6, [r11, r7]
+	orr     r6, r6, #(1 << 31)
+	str	r6, [r11, r7]
+3:
+	ldr	r6, [r11, r7]
+	ands	r6, r6, #(1 << 31)
+	bne	3b
+4:
+	/* let DDR out of self-refresh */
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	bic	r7, r7, #(1 << 21)
+	str	r7, [r11, #MX6Q_MMDC_MAPSR]
+5:
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	ands	r7, r7, #(1 << 25)
+	bne	5b
+
+	/* enable DDR auto power saving */
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	bic	r7, r7, #0x1
+	str	r7, [r11, #MX6Q_MMDC_MAPSR]
+
+	.endm
+
+ENTRY(imx6_suspend)
+	ldr	r1, [r0, #PM_INFO_PBASE_OFFSET]
+	ldr	r2, [r0, #PM_INFO_RESUME_ADDR_OFFSET]
+	ldr	r3, [r0, #PM_INFO_DDR_TYPE_OFFSET]
+	ldr	r4, [r0, #PM_INFO_PM_INFO_SIZE_OFFSET]
+
+	/*
+	 * counting the resume address in iram
+	 * to set it in SRC register.
+	 */
+	ldr	r6, =imx6_suspend
+	ldr	r7, =resume
+	sub	r7, r7, r6
+	add	r8, r1, r4
+	add	r9, r8, r7
+
+	/*
+	 * make sure TLB contain the addr we want,
+	 * as we will access them after MMDC IO floated.
+	 */
+
+	ldr	r11, [r0, #PM_INFO_MX6Q_CCM_V_OFFSET]
+	ldr	r6, [r11, #0x0]
+	ldr	r11, [r0, #PM_INFO_MX6Q_GPC_V_OFFSET]
+	ldr	r6, [r11, #0x0]
+	ldr	r11, [r0, #PM_INFO_MX6Q_IOMUXC_V_OFFSET]
+	ldr	r6, [r11, #0x0]
+
+	/* use r11 to store the IO address */
+	ldr	r11, [r0, #PM_INFO_MX6Q_SRC_V_OFFSET]
+	/* store physical resume addr and pm_info address. */
+	str	r9, [r11, #MX6Q_SRC_GPR1]
+	str	r1, [r11, #MX6Q_SRC_GPR2]
+
+	/* need to sync L2 cache before DSM. */
+	sync_l2_cache
+
+	ldr	r11, [r0, #PM_INFO_MX6Q_MMDC_V_OFFSET]
+	/*
+	 * put DDR explicitly into self-refresh and
+	 * disable automatic power savings.
+	 */
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	orr	r7, r7, #0x1
+	str	r7, [r11, #MX6Q_MMDC_MAPSR]
+
+	/* make the DDR explicitly enter self-refresh. */
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	orr	r7, r7, #(1 << 21)
+	str	r7, [r11, #MX6Q_MMDC_MAPSR]
+
+poll_dvfs_set:
+	ldr	r7, [r11, #MX6Q_MMDC_MAPSR]
+	ands	r7, r7, #(1 << 25)
+	beq	poll_dvfs_set
+
+	ldr	r11, [r0, #PM_INFO_MX6Q_IOMUXC_V_OFFSET]
+	ldr	r6, =0x0
+	ldr	r7, [r0, #PM_INFO_MMDC_IO_NUM_OFFSET]
+	ldr	r8, =PM_INFO_MMDC_IO_VAL_OFFSET
+	add	r8, r8, r0
+	/* LPDDR2's last 3 IOs need special setting */
+	cmp	r3, #IMX_DDR_TYPE_LPDDR2
+	subeq	r7, r7, #0x3
+set_mmdc_io_lpm:
+	ldr	r9, [r8], #0x8
+	str	r6, [r11, r9]
+	subs	r7, r7, #0x1
+	bne	set_mmdc_io_lpm
+
+	cmp 	r3, #IMX_DDR_TYPE_LPDDR2
+	bne	set_mmdc_io_lpm_done
+	ldr	r6, =0x1000
+	ldr	r9, [r8], #0x8
+	str	r6, [r11, r9]
+	ldr	r9, [r8], #0x8
+	str	r6, [r11, r9]
+	ldr	r6, =0x80000
+	ldr	r9, [r8]
+	str	r6, [r11, r9]
+set_mmdc_io_lpm_done:
+
+	/*
+	 * mask all GPC interrupts before
+	 * enabling the RBC counters to
+	 * avoid the counter starting too
+	 * early if an interupt is already
+	 * pending.
+	 */
+	ldr	r11, [r0, #PM_INFO_MX6Q_GPC_V_OFFSET]
+	ldr	r6, [r11, #MX6Q_GPC_IMR1]
+	ldr	r7, [r11, #MX6Q_GPC_IMR2]
+	ldr	r8, [r11, #MX6Q_GPC_IMR3]
+	ldr	r9, [r11, #MX6Q_GPC_IMR4]
+
+	ldr	r10, =0xffffffff
+	str	r10, [r11, #MX6Q_GPC_IMR1]
+	str	r10, [r11, #MX6Q_GPC_IMR2]
+	str	r10, [r11, #MX6Q_GPC_IMR3]
+	str	r10, [r11, #MX6Q_GPC_IMR4]
+
+	/*
+	 * enable the RBC bypass counter here
+	 * to hold off the interrupts. RBC counter
+	 * = 32 (1ms), Minimum RBC delay should be
+	 * 400us for the analog LDOs to power down.
+	 */
+	ldr	r11, [r0, #PM_INFO_MX6Q_CCM_V_OFFSET]
+	ldr	r10, [r11, #MX6Q_CCM_CCR]
+	bic	r10, r10, #(0x3f << 21)
+	orr	r10, r10, #(0x20 << 21)
+	str	r10, [r11, #MX6Q_CCM_CCR]
+
+	/* enable the counter. */
+	ldr	r10, [r11, #MX6Q_CCM_CCR]
+	orr	r10, r10, #(0x1 << 27)
+	str	r10, [r11, #MX6Q_CCM_CCR]
+
+	/* unmask all the GPC interrupts. */
+	ldr	r11, [r0, #PM_INFO_MX6Q_GPC_V_OFFSET]
+	str	r6, [r11, #MX6Q_GPC_IMR1]
+	str	r7, [r11, #MX6Q_GPC_IMR2]
+	str	r8, [r11, #MX6Q_GPC_IMR3]
+	str	r9, [r11, #MX6Q_GPC_IMR4]
+
+	/*
+	 * now delay for a short while (3usec)
+	 * ARM is at 1GHz at this point
+	 * so a short loop should be enough.
+	 * this delay is required to ensure that
+	 * the RBC counter can start counting in
+	 * case an interrupt is already pending
+	 * or in case an interrupt arrives just
+	 * as ARM is about to assert DSM_request.
+	 */
+	ldr	r6, =2000
+rbc_loop:
+	subs	r6, r6, #0x1
+	bne	rbc_loop
+
+	/* Zzz, enter stop mode */
+	wfi
+	nop
+	nop
+	nop
+	nop
+
+	/*
+	 * run to here means there is pending
+	 * wakeup source, system should auto
+	 * resume, we need to restore MMDC IO first
+	 */
+	mov	r5, #0x0
+	resume_mmdc
+
+	/* return to suspend finish */
+	ret	lr
+
+resume:
+	/* invalidate L1 I-cache first */
+	mov     r6, #0x0
+	mcr     p15, 0, r6, c7, c5, 0
+	mcr     p15, 0, r6, c7, c5, 6
+	/* enable the Icache and branch prediction */
+	mov     r6, #0x1800
+	mcr     p15, 0, r6, c1, c0, 0
+	isb
+
+	/* get physical resume address from pm_info. */
+	ldr	lr, [r0, #PM_INFO_RESUME_ADDR_OFFSET]
+	/* clear core0's entry and parameter */
+	ldr	r11, [r0, #PM_INFO_MX6Q_SRC_P_OFFSET]
+	mov	r7, #0x0
+	str	r7, [r11, #MX6Q_SRC_GPR1]
+	str	r7, [r11, #MX6Q_SRC_GPR2]
+
+	ldr	r3, [r0, #PM_INFO_DDR_TYPE_OFFSET]
+	mov	r5, #0x1
+	resume_mmdc
+
+	ret	lr
+ENDPROC(imx6_suspend)
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 1999 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd
+ * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <asm/system_misc.h>
+#include <asm/proc-fns.h>
+#include <asm/mach-types.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "common.h"
+#include "hardware.h"
+
+static void __iomem *wdog_base;
+static struct clk *wdog_clk;
+static int wcr_enable = (1 << 2);
+
+/*
+ * Reset the system. It is called by machine_restart().
+ */
+void mxc_restart(enum reboot_mode mode, const char *cmd)
+{
+	if (!wdog_base)
+		goto reset_fallback;
+
+	if (!IS_ERR(wdog_clk))
+		clk_enable(wdog_clk);
+
+	/* Assert SRS signal */
+	imx_writew(wcr_enable, wdog_base);
+	/*
+	 * Due to imx6q errata ERR004346 (WDOG: WDOG SRS bit requires to be
+	 * written twice), we add another two writes to ensure there must be at
+	 * least two writes happen in the same one 32kHz clock period.  We save
+	 * the target check here, since the writes shouldn't be a huge burden
+	 * for other platforms.
+	 */
+	imx_writew(wcr_enable, wdog_base);
+	imx_writew(wcr_enable, wdog_base);
+
+	/* wait for reset to assert... */
+	mdelay(500);
+
+	pr_err("%s: Watchdog reset failed to assert reset\n", __func__);
+
+	/* delay to allow the serial port to show the message */
+	mdelay(50);
+
+reset_fallback:
+	/* we'll take a jump through zero as a poor second */
+	soft_restart(0);
+}
+
+void __init mxc_arch_reset_init(void __iomem *base)
+{
+	wdog_base = base;
+
+	wdog_clk = clk_get_sys("imx2-wdt.0", NULL);
+	if (IS_ERR(wdog_clk))
+		pr_warn("%s: failed to get wdog clock\n", __func__);
+	else
+		clk_prepare(wdog_clk);
+}
+
+#ifdef CONFIG_SOC_IMX1
+void __init imx1_reset_init(void __iomem *base)
+{
+	wcr_enable = (1 << 0);
+	mxc_arch_reset_init(base);
+}
+#endif
+
+#ifdef CONFIG_CACHE_L2X0
+void __init imx_init_l2cache(void)
+{
+	void __iomem *l2x0_base;
+	struct device_node *np;
+	unsigned int val;
+
+	np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache");
+	if (!np)
+		return;
+
+	l2x0_base = of_iomap(np, 0);
+	if (!l2x0_base)
+		goto put_node;
+
+	if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
+		/* Configure the L2 PREFETCH and POWER registers */
+		val = readl_relaxed(l2x0_base + L310_PREFETCH_CTRL);
+		val |= L310_PREFETCH_CTRL_DBL_LINEFILL |
+			L310_PREFETCH_CTRL_INSTR_PREFETCH |
+			L310_PREFETCH_CTRL_DATA_PREFETCH;
+
+		/* Set perfetch offset to improve performance */
+		val &= ~L310_PREFETCH_CTRL_OFFSET_MASK;
+		val |= 15;
+
+		writel_relaxed(val, l2x0_base + L310_PREFETCH_CTRL);
+	}
+
+	iounmap(l2x0_base);
+put_node:
+	of_node_put(np);
+}
+#endif
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C)2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/irqchip.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <asm/mach/irq.h>
+#include <asm/exception.h>
+
+#include "common.h"
+#include "hardware.h"
+#include "irq-common.h"
+
+/*
+ *****************************************
+ * TZIC Registers                        *
+ *****************************************
+ */
+
+#define TZIC_INTCNTL	0x0000	/* Control register */
+#define TZIC_INTTYPE	0x0004	/* Controller Type register */
+#define TZIC_IMPID	0x0008	/* Distributor Implementer Identification */
+#define TZIC_PRIOMASK	0x000C	/* Priority Mask Reg */
+#define TZIC_SYNCCTRL	0x0010	/* Synchronizer Control register */
+#define TZIC_DSMINT	0x0014	/* DSM interrupt Holdoffregister */
+#define TZIC_INTSEC0(i)	(0x0080 + ((i) << 2)) /* Interrupt Security Reg 0 */
+#define TZIC_ENSET0(i)	(0x0100 + ((i) << 2)) /* Enable Set Reg 0 */
+#define TZIC_ENCLEAR0(i) (0x0180 + ((i) << 2)) /* Enable Clear Reg 0 */
+#define TZIC_SRCSET0	0x0200	/* Source Set Register 0 */
+#define TZIC_SRCCLAR0	0x0280	/* Source Clear Register 0 */
+#define TZIC_PRIORITY0	0x0400	/* Priority Register 0 */
+#define TZIC_PND0	0x0D00	/* Pending Register 0 */
+#define TZIC_HIPND(i)	(0x0D80+ ((i) << 2))	/* High Priority Pending Register */
+#define TZIC_WAKEUP0(i)	(0x0E00 + ((i) << 2))	/* Wakeup Config Register */
+#define TZIC_SWINT	0x0F00	/* Software Interrupt Rigger Register */
+#define TZIC_ID0	0x0FD0	/* Indentification Register 0 */
+
+static void __iomem *tzic_base;
+static struct irq_domain *domain;
+
+#define TZIC_NUM_IRQS 128
+
+#ifdef CONFIG_FIQ
+static int tzic_set_irq_fiq(unsigned int hwirq, unsigned int type)
+{
+	unsigned int index, mask, value;
+
+	index = hwirq >> 5;
+	if (unlikely(index >= 4))
+		return -EINVAL;
+	mask = 1U << (hwirq & 0x1F);
+
+	value = imx_readl(tzic_base + TZIC_INTSEC0(index)) | mask;
+	if (type)
+		value &= ~mask;
+	imx_writel(value, tzic_base + TZIC_INTSEC0(index));
+
+	return 0;
+}
+#else
+#define tzic_set_irq_fiq NULL
+#endif
+
+#ifdef CONFIG_PM
+static void tzic_irq_suspend(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	int idx = d->hwirq >> 5;
+
+	imx_writel(gc->wake_active, tzic_base + TZIC_WAKEUP0(idx));
+}
+
+static void tzic_irq_resume(struct irq_data *d)
+{
+	int idx = d->hwirq >> 5;
+
+	imx_writel(imx_readl(tzic_base + TZIC_ENSET0(idx)),
+		   tzic_base + TZIC_WAKEUP0(idx));
+}
+
+#else
+#define tzic_irq_suspend NULL
+#define tzic_irq_resume NULL
+#endif
+
+static struct mxc_extra_irq tzic_extra_irq = {
+#ifdef CONFIG_FIQ
+	.set_irq_fiq = tzic_set_irq_fiq,
+#endif
+};
+
+static __init void tzic_init_gc(int idx, unsigned int irq_start)
+{
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
+
+	gc = irq_alloc_generic_chip("tzic", 1, irq_start, tzic_base,
+				    handle_level_irq);
+	gc->private = &tzic_extra_irq;
+	gc->wake_enabled = IRQ_MSK(32);
+
+	ct = gc->chip_types;
+	ct->chip.irq_mask = irq_gc_mask_disable_reg;
+	ct->chip.irq_unmask = irq_gc_unmask_enable_reg;
+	ct->chip.irq_set_wake = irq_gc_set_wake;
+	ct->chip.irq_suspend = tzic_irq_suspend;
+	ct->chip.irq_resume = tzic_irq_resume;
+	ct->regs.disable = TZIC_ENCLEAR0(idx);
+	ct->regs.enable = TZIC_ENSET0(idx);
+
+	irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
+}
+
+static void __exception_irq_entry tzic_handle_irq(struct pt_regs *regs)
+{
+	u32 stat;
+	int i, irqofs, handled;
+
+	do {
+		handled = 0;
+
+		for (i = 0; i < 4; i++) {
+			stat = imx_readl(tzic_base + TZIC_HIPND(i)) &
+				imx_readl(tzic_base + TZIC_INTSEC0(i));
+
+			while (stat) {
+				handled = 1;
+				irqofs = fls(stat) - 1;
+				generic_handle_domain_irq(domain, irqofs + i * 32);
+				stat &= ~(1 << irqofs);
+			}
+		}
+	} while (handled);
+}
+
+/*
+ * This function initializes the TZIC hardware and disables all the
+ * interrupts. It registers the interrupt enable and disable functions
+ * to the kernel for each interrupt source.
+ */
+static int __init tzic_init_dt(struct device_node *np, struct device_node *p)
+{
+	int irq_base;
+	int i;
+
+	tzic_base = of_iomap(np, 0);
+	WARN_ON(!tzic_base);
+
+	/* put the TZIC into the reset value with
+	 * all interrupts disabled
+	 */
+	i = imx_readl(tzic_base + TZIC_INTCNTL);
+
+	imx_writel(0x80010001, tzic_base + TZIC_INTCNTL);
+	imx_writel(0x1f, tzic_base + TZIC_PRIOMASK);
+	imx_writel(0x02, tzic_base + TZIC_SYNCCTRL);
+
+	for (i = 0; i < 4; i++)
+		imx_writel(0xFFFFFFFF, tzic_base + TZIC_INTSEC0(i));
+
+	/* disable all interrupts */
+	for (i = 0; i < 4; i++)
+		imx_writel(0xFFFFFFFF, tzic_base + TZIC_ENCLEAR0(i));
+
+	/* all IRQ no FIQ Warning :: No selection */
+
+	irq_base = irq_alloc_descs(-1, 0, TZIC_NUM_IRQS, numa_node_id());
+	WARN_ON(irq_base < 0);
+
+	domain = irq_domain_create_legacy(of_fwnode_handle(np), TZIC_NUM_IRQS, irq_base, 0,
+					  &irq_domain_simple_ops, NULL);
+	WARN_ON(!domain);
+
+	for (i = 0; i < 4; i++, irq_base += 32)
+		tzic_init_gc(i, irq_base);
+
+	set_handle_irq(tzic_handle_irq);
+
+#ifdef CONFIG_FIQ
+	/* Initialize FIQ */
+	init_FIQ(FIQ_START);
+#endif
+
+	pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");
+
+	return 0;
+}
+IRQCHIP_DECLARE(tzic, "fsl,tzic", tzic_init_dt);
+
+/**
+ * tzic_enable_wake() - enable wakeup interrupt
+ *
+ * @return			0 if successful; non-zero otherwise
+ *
+ * This function provides an interrupt synchronization point that is required
+ * by tzic enabled platforms before entering imx specific low power modes (ie,
+ * those low power modes beyond the WAIT_CLOCKED basic ARM WFI only mode).
+ */
+int tzic_enable_wake(void)
+{
+	unsigned int i;
+
+	imx_writel(1, tzic_base + TZIC_DSMINT);
+	if (unlikely(imx_readl(tzic_base + TZIC_DSMINT) == 0))
+		return -EAGAIN;
+
+	for (i = 0; i < 4; i++)
+		imx_writel(imx_readl(tzic_base + TZIC_ENSET0(i)),
+			   tzic_base + TZIC_WAKEUP0(i));
+
+	return 0;
+}