Resguardo inicial

linux-7.2.3/drivers/clk/meson/Kconfig

@@ -0,0 +1,232 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "Clock support for Amlogic platforms"
+	depends on ARCH_MESON || COMPILE_TEST
+
+config COMMON_CLK_MESON_REGMAP
+	tristate
+	select REGMAP
+	select MFD_SYSCON
+
+config COMMON_CLK_MESON_DUALDIV
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_MPLL
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_PHASE
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_PLL
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_SCLK_DIV
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_VID_PLL_DIV
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_VCLK
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON_CLKC_UTILS
+	select REGMAP
+	select MFD_SYSCON
+	tristate
+
+config COMMON_CLK_MESON_AO_CLKC
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select RESET_CONTROLLER
+
+config COMMON_CLK_MESON_CPU_DYNDIV
+	tristate
+	select COMMON_CLK_MESON_REGMAP
+
+config COMMON_CLK_MESON8B
+	bool "Meson8 SoC Clock controller support"
+	depends on ARM
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	select MFD_SYSCON
+	select RESET_CONTROLLER
+	help
+	  Support for the clock controller on AmLogic S802 (Meson8),
+	  S805 (Meson8b) and S812 (Meson8m2) devices. Say Y if you
+	  want peripherals and CPU frequency scaling to work.
+
+config COMMON_CLK_GXBB
+	tristate "GXBB and GXL SoC clock controllers support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_VID_PLL_DIV
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	select COMMON_CLK_MESON_AO_CLKC
+	select MFD_SYSCON
+	help
+	  Support for the clock controller on AmLogic S905 devices, aka gxbb.
+	  Say Y if you want peripherals and CPU frequency scaling to work.
+
+config COMMON_CLK_AXG
+	tristate "AXG SoC clock controllers support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	select COMMON_CLK_MESON_AO_CLKC
+	select MFD_SYSCON
+	help
+	  Support for the clock controller on AmLogic A113D devices, aka axg.
+	  Say Y if you want peripherals and CPU frequency scaling to work.
+
+config COMMON_CLK_AXG_AUDIO
+	tristate "Meson AXG Audio Clock Controller Driver"
+	depends on ARM64
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_PHASE
+	select COMMON_CLK_MESON_SCLK_DIV
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select REGMAP_MMIO
+	select AUXILIARY_BUS
+	imply RESET_MESON_AUX
+	help
+	  Support for the audio clock controller on AmLogic A113D devices,
+	  aka axg, Say Y if you want audio subsystem to work.
+
+config COMMON_CLK_A1_PLL
+	tristate "Amlogic A1 SoC PLL controller support"
+	depends on ARM64
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_PLL
+	help
+	  Support for the PLL clock controller on Amlogic A113L based
+	  device, A1 SoC Family. Say Y if you want A1 PLL clock controller
+	  to work.
+
+config COMMON_CLK_A1_PERIPHERALS
+	tristate "Amlogic A1 SoC Peripherals clock controller support"
+	depends on ARM64
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	help
+	  Support for the Peripherals clock controller on Amlogic A113L based
+	  device, A1 SoC Family. Say Y if you want A1 Peripherals clock
+	  controller to work.
+
+config COMMON_CLK_C3_PLL
+	tristate "Amlogic C3 PLL clock controller"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_PLL
+	select COMMON_CLK_MESON_CLKC_UTILS
+	imply COMMON_CLK_SCMI
+	help
+	  Support for the PLL clock controller on Amlogic C302X and C308L devices,
+	  AKA C3. Say Y if you want the board to work, because PLLs are the parent
+	  of most peripherals.
+
+config COMMON_CLK_C3_PERIPHERALS
+	tristate "Amlogic C3 peripherals clock controller"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_CLKC_UTILS
+	imply COMMON_CLK_SCMI
+	imply COMMON_CLK_C3_PLL
+	help
+	  Support for the Peripherals clock controller on Amlogic C302X and
+	  C308L devices, AKA C3. Say Y if you want the peripherals clock to
+	  work.
+
+config COMMON_CLK_G12A
+	tristate "G12 and SM1 SoC clock controllers support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	select COMMON_CLK_MESON_AO_CLKC
+	select COMMON_CLK_MESON_CPU_DYNDIV
+	select COMMON_CLK_MESON_VID_PLL_DIV
+	select COMMON_CLK_MESON_VCLK
+	select MFD_SYSCON
+	help
+	  Support for the clock controller on Amlogic S905D2, S905X2 and S905Y2
+	  devices, aka g12a. Say Y if you want peripherals to work.
+
+config COMMON_CLK_S4_PLL
+	tristate "S4 SoC PLL clock controllers support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	select COMMON_CLK_MESON_REGMAP
+	help
+	  Support for the PLL clock controller on Amlogic S805X2 and S905Y4 devices,
+	  AKA S4. Say Y if you want the board to work, because PLLs are the parent of
+	  most peripherals.
+
+config COMMON_CLK_S4_PERIPHERALS
+	tristate "S4 SoC peripherals clock controllers support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_DUALDIV
+	select COMMON_CLK_MESON_VID_PLL_DIV
+	help
+	  Support for the peripherals clock controller on Amlogic S805X2 and S905Y4
+	  devices, AKA S4. Say Y if you want S4 peripherals clock controller to work.
+
+config COMMON_CLK_T7_PLL
+	tristate "Amlogic T7 SoC PLL controller support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_MPLL
+	select COMMON_CLK_MESON_PLL
+	imply COMMON_CLK_SCMI
+	help
+	  Support for the PLL clock controller on Amlogic A311D2 based
+	  device, AKA T7. PLLs are required by most peripheral to operate.
+	  Say Y if you want T7 PLL clock controller to work.
+
+config COMMON_CLK_T7_PERIPHERALS
+	tristate "Amlogic T7 SoC peripherals clock controller support"
+	depends on ARM64
+	default ARCH_MESON
+	select COMMON_CLK_MESON_REGMAP
+	select COMMON_CLK_MESON_CLKC_UTILS
+	select COMMON_CLK_MESON_DUALDIV
+	imply COMMON_CLK_SCMI
+	imply COMMON_CLK_T7_PLL
+	help
+	  Support for the peripherals clock controller on Amlogic A311D2 based
+	  device, AKA T7. Peripherals are required by most peripheral to operate.
+	  Say Y if you want T7 peripherals clock controller to work.
+endmenu

linux-7.2.3/drivers/clk/meson/Makefile

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Amlogic clock drivers
+
+obj-$(CONFIG_COMMON_CLK_MESON_CLKC_UTILS) += meson-clkc-utils.o
+obj-$(CONFIG_COMMON_CLK_MESON_AO_CLKC) += meson-aoclk.o
+obj-$(CONFIG_COMMON_CLK_MESON_CPU_DYNDIV) += clk-cpu-dyndiv.o
+obj-$(CONFIG_COMMON_CLK_MESON_DUALDIV) += clk-dualdiv.o
+obj-$(CONFIG_COMMON_CLK_MESON_MPLL) += clk-mpll.o
+obj-$(CONFIG_COMMON_CLK_MESON_PHASE) += clk-phase.o
+obj-$(CONFIG_COMMON_CLK_MESON_PLL) += clk-pll.o
+obj-$(CONFIG_COMMON_CLK_MESON_REGMAP) += clk-regmap.o
+obj-$(CONFIG_COMMON_CLK_MESON_SCLK_DIV) += sclk-div.o
+obj-$(CONFIG_COMMON_CLK_MESON_VID_PLL_DIV) += vid-pll-div.o
+obj-$(CONFIG_COMMON_CLK_MESON_VCLK) += vclk.o
+
+# Amlogic Clock controllers
+
+obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
+obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
+obj-$(CONFIG_COMMON_CLK_A1_PLL) += a1-pll.o
+obj-$(CONFIG_COMMON_CLK_A1_PERIPHERALS) += a1-peripherals.o
+obj-$(CONFIG_COMMON_CLK_C3_PLL) += c3-pll.o
+obj-$(CONFIG_COMMON_CLK_C3_PERIPHERALS) += c3-peripherals.o
+obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
+obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o
+obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o
+obj-$(CONFIG_COMMON_CLK_S4_PLL) += s4-pll.o
+obj-$(CONFIG_COMMON_CLK_S4_PERIPHERALS) += s4-peripherals.o
+obj-$(CONFIG_COMMON_CLK_T7_PLL) += t7-pll.o
+obj-$(CONFIG_COMMON_CLK_T7_PERIPHERALS) += t7-peripherals.o

linux-7.2.3/drivers/clk/meson/a1-pll.c

@@ -0,0 +1,326 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
+ * Author: Jian Hu <jian.hu@amlogic.com>
+ *
+ * Copyright (c) 2023, SberDevices. All Rights Reserved.
+ * Author: Dmitry Rokosov <ddrokosov@sberdevices.ru>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include "clk-pll.h"
+#include "clk-regmap.h"
+#include "meson-clkc-utils.h"
+
+#define ANACTRL_FIXPLL_CTRL0	0x0
+#define ANACTRL_FIXPLL_CTRL1	0x4
+#define ANACTRL_FIXPLL_STS	0x14
+#define ANACTRL_HIFIPLL_CTRL0	0xc0
+#define ANACTRL_HIFIPLL_CTRL1	0xc4
+#define ANACTRL_HIFIPLL_CTRL2	0xc8
+#define ANACTRL_HIFIPLL_CTRL3	0xcc
+#define ANACTRL_HIFIPLL_CTRL4	0xd0
+#define ANACTRL_HIFIPLL_STS	0xd4
+
+#include <dt-bindings/clock/amlogic,a1-pll-clkc.h>
+
+static struct clk_regmap a1_fixed_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.frac = {
+			.reg_off = ANACTRL_FIXPLL_CTRL1,
+			.shift   = 0,
+			.width   = 19,
+		},
+		.l = {
+			.reg_off = ANACTRL_FIXPLL_STS,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fixed_pll_dco",
+		.ops = &meson_clk_pll_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fixpll_in",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap a1_fixed_pll = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.bit_idx = 20,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fixed_pll",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fixed_pll_dco.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct pll_mult_range a1_hifi_pll_range = {
+	.min = 32,
+	.max = 64,
+};
+
+static const struct reg_sequence a1_hifi_pll_init_regs[] = {
+	{ .reg = ANACTRL_HIFIPLL_CTRL1, .def = 0x01800000 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL2, .def = 0x00001100 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL3, .def = 0x100a1100 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL4, .def = 0x00302000 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL0, .def = 0x01f18000 },
+};
+
+static struct clk_regmap a1_hifi_pll = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.frac = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL1,
+			.shift   = 0,
+			.width   = 19,
+		},
+		.l = {
+			.reg_off = ANACTRL_HIFIPLL_STS,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.current_en = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 26,
+			.width   = 1,
+		},
+		.l_detect = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL2,
+			.shift   = 6,
+			.width   = 1,
+		},
+		.range = &a1_hifi_pll_range,
+		.init_regs = a1_hifi_pll_init_regs,
+		.init_count = ARRAY_SIZE(a1_hifi_pll_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hifi_pll",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "hifipll_in",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor a1_fclk_div2_div = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fixed_pll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap a1_fclk_div2 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.bit_idx = 21,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fclk_div2_div.hw
+		},
+		.num_parents = 1,
+		/*
+		 * This clock is used by DDR clock in BL2 firmware
+		 * and is required by the platform to operate correctly.
+		 * Until the following condition are met, we need this clock to
+		 * be marked as critical:
+		 * a) Mark the clock used by a firmware resource, if possible
+		 * b) CCF has a clock hand-off mechanism to make the sure the
+		 *    clock stays on until the proper driver comes along
+		 */
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor a1_fclk_div3_div = {
+	.mult = 1,
+	.div = 3,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div3_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fixed_pll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap a1_fclk_div3 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.bit_idx = 22,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div3",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fclk_div3_div.hw
+		},
+		.num_parents = 1,
+		/*
+		 * This clock is used by APB bus which is set in boot ROM code
+		 * and is required by the platform to operate correctly.
+		 */
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor a1_fclk_div5_div = {
+	.mult = 1,
+	.div = 5,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fixed_pll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap a1_fclk_div5 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.bit_idx = 23,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div5",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fclk_div5_div.hw
+		},
+		.num_parents = 1,
+		/*
+		 * This clock is used by AXI bus which setted in Romcode
+		 * and is required by the platform to operate correctly.
+		 */
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor a1_fclk_div7_div = {
+	.mult = 1,
+	.div = 7,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div7_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fixed_pll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap a1_fclk_div7 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.bit_idx = 24,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div7",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&a1_fclk_div7_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+/* Array of all clocks registered by this provider */
+static struct clk_hw *a1_pll_hw_clks[] = {
+	[CLKID_FIXED_PLL_DCO]	= &a1_fixed_pll_dco.hw,
+	[CLKID_FIXED_PLL]	= &a1_fixed_pll.hw,
+	[CLKID_FCLK_DIV2_DIV]	= &a1_fclk_div2_div.hw,
+	[CLKID_FCLK_DIV3_DIV]	= &a1_fclk_div3_div.hw,
+	[CLKID_FCLK_DIV5_DIV]	= &a1_fclk_div5_div.hw,
+	[CLKID_FCLK_DIV7_DIV]	= &a1_fclk_div7_div.hw,
+	[CLKID_FCLK_DIV2]	= &a1_fclk_div2.hw,
+	[CLKID_FCLK_DIV3]	= &a1_fclk_div3.hw,
+	[CLKID_FCLK_DIV5]	= &a1_fclk_div5.hw,
+	[CLKID_FCLK_DIV7]	= &a1_fclk_div7.hw,
+	[CLKID_HIFI_PLL]	= &a1_hifi_pll.hw,
+};
+
+static const struct meson_clkc_data a1_pll_clkc_data = {
+	.hw_clks = {
+		.hws = a1_pll_hw_clks,
+		.num = ARRAY_SIZE(a1_pll_hw_clks),
+	},
+};
+
+static const struct of_device_id a1_pll_clkc_match_table[] = {
+	{
+		.compatible = "amlogic,a1-pll-clkc",
+		.data = &a1_pll_clkc_data,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, a1_pll_clkc_match_table);
+
+static struct platform_driver a1_pll_clkc_driver = {
+	.probe = meson_clkc_mmio_probe,
+	.driver = {
+		.name = "a1-pll-clkc",
+		.of_match_table = a1_pll_clkc_match_table,
+	},
+};
+module_platform_driver(a1_pll_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic A1 PLL Clock Controller driver");
+MODULE_AUTHOR("Jian Hu <jian.hu@amlogic.com>");
+MODULE_AUTHOR("Dmitry Rokosov <ddrokosov@sberdevices.ru>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/axg-aoclk.c

@@ -0,0 +1,320 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Amlogic Meson-AXG Clock Controller Driver
+ *
+ * Copyright (c) 2016 Baylibre SAS.
+ * Author: Michael Turquette <mturquette@baylibre.com>
+ *
+ * Copyright (c) 2018 Amlogic, inc.
+ * Author: Qiufang Dai <qiufang.dai@amlogic.com>
+ */
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include "meson-aoclk.h"
+
+#include "clk-regmap.h"
+#include "clk-dualdiv.h"
+
+#include <dt-bindings/clock/axg-aoclkc.h>
+#include <dt-bindings/reset/axg-aoclkc.h>
+
+/*
+ * AO Configuration Clock registers offsets
+ * Register offsets from the data sheet must be multiplied by 4.
+ */
+#define AO_RTI_PWR_CNTL_REG1	0x0C
+#define AO_RTI_PWR_CNTL_REG0	0x10
+#define AO_RTI_GEN_CNTL_REG0	0x40
+#define AO_OSCIN_CNTL		0x58
+#define AO_CRT_CLK_CNTL1	0x68
+#define AO_SAR_CLK		0x90
+#define AO_RTC_ALT_CLK_CNTL0	0x94
+#define AO_RTC_ALT_CLK_CNTL1	0x98
+
+static const struct clk_parent_data axg_ao_pclk_parents = { .fw_name = "mpeg-clk" };
+
+#define AXG_AO_GATE(_name, _bit, _flags)		       \
+	MESON_PCLK(axg_ao_##_name, AO_RTI_GEN_CNTL_REG0, _bit, \
+		   &axg_ao_pclk_parents, _flags)
+
+static AXG_AO_GATE(remote,	0, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(i2c_master,	1, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(i2c_slave,	2, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(uart1,	3, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(uart2,	5, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(ir_blaster,	6, CLK_IGNORE_UNUSED);
+static AXG_AO_GATE(saradc,	7, CLK_IGNORE_UNUSED);
+
+static struct clk_regmap axg_ao_cts_oscin = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.bit_idx = 14,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_oscin",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap axg_ao_32k_pre = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_pre",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_cts_oscin.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct meson_clk_dualdiv_param axg_32k_div_table[] = {
+	{
+		.dual	= 1,
+		.n1	= 733,
+		.m1	= 8,
+		.n2	= 732,
+		.m2	= 11,
+	}, {}
+};
+
+static struct clk_regmap axg_ao_32k_div = {
+	.data = &(struct meson_clk_dualdiv_data){
+		.n1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.n2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.m1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.m2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.dual = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.table = axg_32k_div_table,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_div",
+		.ops = &meson_clk_dualdiv_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_32k_pre.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap axg_ao_32k_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTC_ALT_CLK_CNTL1,
+		.mask = 0x1,
+		.shift = 24,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_32k_div.hw,
+			&axg_ao_32k_pre.hw,
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_ao_32k = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 30,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_32k",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_32k_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_ao_cts_rtc_oscin = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 10,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "axg_ao_cts_rtc_oscin",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .hw = &axg_ao_32k.hw },
+			{ .fw_name = "ext_32k-0", },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_ao_clk81 = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 8,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		/*
+		 * NOTE: this is one of the infamous clock the pwm driver
+		 * can request directly by its global name. It's wrong but
+		 * there is not much we can do about it until the support
+		 * for the old pwm bindings is dropped
+		 */
+		.name = "axg_ao_clk81",
+		.ops = &clk_regmap_mux_ro_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "mpeg-clk", },
+			{ .hw = &axg_ao_cts_rtc_oscin.hw },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_ao_saradc_mux = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_SAR_CLK,
+		.mask = 0x3,
+		.shift = 9,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_mux",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", },
+			{ .hw = &axg_ao_clk81.hw },
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_regmap axg_ao_saradc_div = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = AO_SAR_CLK,
+		.shift = 0,
+		.width = 8,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_saradc_mux.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap axg_ao_saradc_gate = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = AO_SAR_CLK,
+		.bit_idx = 8,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_gate",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&axg_ao_saradc_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const unsigned int axg_ao_reset[] = {
+	[RESET_AO_REMOTE]	= 16,
+	[RESET_AO_I2C_MASTER]	= 18,
+	[RESET_AO_I2C_SLAVE]	= 19,
+	[RESET_AO_UART1]	= 17,
+	[RESET_AO_UART2]	= 22,
+	[RESET_AO_IR_BLASTER]	= 23,
+};
+
+static struct clk_hw *axg_ao_hw_clks[] = {
+	[CLKID_AO_REMOTE]	= &axg_ao_remote.hw,
+	[CLKID_AO_I2C_MASTER]	= &axg_ao_i2c_master.hw,
+	[CLKID_AO_I2C_SLAVE]	= &axg_ao_i2c_slave.hw,
+	[CLKID_AO_UART1]	= &axg_ao_uart1.hw,
+	[CLKID_AO_UART2]	= &axg_ao_uart2.hw,
+	[CLKID_AO_IR_BLASTER]	= &axg_ao_ir_blaster.hw,
+	[CLKID_AO_SAR_ADC]	= &axg_ao_saradc.hw,
+	[CLKID_AO_CLK81]	= &axg_ao_clk81.hw,
+	[CLKID_AO_SAR_ADC_SEL]	= &axg_ao_saradc_mux.hw,
+	[CLKID_AO_SAR_ADC_DIV]	= &axg_ao_saradc_div.hw,
+	[CLKID_AO_SAR_ADC_CLK]	= &axg_ao_saradc_gate.hw,
+	[CLKID_AO_CTS_OSCIN]	= &axg_ao_cts_oscin.hw,
+	[CLKID_AO_32K_PRE]	= &axg_ao_32k_pre.hw,
+	[CLKID_AO_32K_DIV]	= &axg_ao_32k_div.hw,
+	[CLKID_AO_32K_SEL]	= &axg_ao_32k_sel.hw,
+	[CLKID_AO_32K]		= &axg_ao_32k.hw,
+	[CLKID_AO_CTS_RTC_OSCIN] = &axg_ao_cts_rtc_oscin.hw,
+};
+
+static const struct meson_aoclk_data axg_ao_clkc_data = {
+	.reset_reg	= AO_RTI_GEN_CNTL_REG0,
+	.num_reset	= ARRAY_SIZE(axg_ao_reset),
+	.reset		= axg_ao_reset,
+	.clkc_data	= {
+		.hw_clks = {
+			.hws	= axg_ao_hw_clks,
+			.num	= ARRAY_SIZE(axg_ao_hw_clks),
+		},
+	},
+};
+
+static const struct of_device_id axg_ao_clkc_match_table[] = {
+	{
+		.compatible	= "amlogic,meson-axg-aoclkc",
+		.data		= &axg_ao_clkc_data.clkc_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, axg_ao_clkc_match_table);
+
+static struct platform_driver axg_ao_clkc_driver = {
+	.probe		= meson_aoclkc_probe,
+	.driver		= {
+		.name	= "axg-ao-clkc",
+		.of_match_table = axg_ao_clkc_match_table,
+	},
+};
+module_platform_driver(axg_ao_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic AXG Always-ON Clock Controller driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/c3-pll.c

@@ -0,0 +1,684 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Amlogic C3 PLL Controller Driver
+ *
+ * Copyright (c) 2023 Amlogic, inc.
+ * Author: Chuan Liu <chuan.liu@amlogic.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "meson-clkc-utils.h"
+#include <dt-bindings/clock/amlogic,c3-pll-clkc.h>
+
+#define ANACTRL_FIXPLL_CTRL4			0x50
+#define ANACTRL_GP0PLL_CTRL0			0x80
+#define ANACTRL_GP0PLL_CTRL1			0x84
+#define ANACTRL_GP0PLL_CTRL2			0x88
+#define ANACTRL_GP0PLL_CTRL3			0x8c
+#define ANACTRL_GP0PLL_CTRL4			0x90
+#define ANACTRL_GP0PLL_CTRL5			0x94
+#define ANACTRL_GP0PLL_CTRL6			0x98
+#define ANACTRL_HIFIPLL_CTRL0			0x100
+#define ANACTRL_HIFIPLL_CTRL1			0x104
+#define ANACTRL_HIFIPLL_CTRL2			0x108
+#define ANACTRL_HIFIPLL_CTRL3			0x10c
+#define ANACTRL_HIFIPLL_CTRL4			0x110
+#define ANACTRL_HIFIPLL_CTRL5			0x114
+#define ANACTRL_HIFIPLL_CTRL6			0x118
+#define ANACTRL_MPLL_CTRL0			0x180
+#define ANACTRL_MPLL_CTRL1			0x184
+#define ANACTRL_MPLL_CTRL2			0x188
+#define ANACTRL_MPLL_CTRL3			0x18c
+#define ANACTRL_MPLL_CTRL4			0x190
+
+static struct clk_regmap c3_fclk_50m_en = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 0,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_50m_en",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_50m = {
+	.mult = 1,
+	.div = 40,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_50m",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_50m_en.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div2_div = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div2_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div2 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 24,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div2",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div2_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div2p5_div = {
+	.mult = 2,
+	.div = 5,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div2p5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div2p5 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 4,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div2p5",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div2p5_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div3_div = {
+	.mult = 1,
+	.div = 3,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div3_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div3 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 20,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div3",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div3_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div4_div = {
+	.mult = 1,
+	.div = 4,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div4_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div4 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 21,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div4",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div4_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div5_div = {
+	.mult = 1,
+	.div = 5,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div5 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 22,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div5",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div5_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor c3_fclk_div7_div = {
+	.mult = 1,
+	.div = 7,
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div7_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "fix"
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_fclk_div7 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_FIXPLL_CTRL4,
+		.bit_idx = 23,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "fclk_div7",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_fclk_div7_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct reg_sequence c3_gp0_pll_init_regs[] = {
+	{ .reg = ANACTRL_GP0PLL_CTRL2,	.def = 0x0 },
+	{ .reg = ANACTRL_GP0PLL_CTRL3,	.def = 0x48681c00 },
+	{ .reg = ANACTRL_GP0PLL_CTRL4,  .def = 0x88770290 },
+	{ .reg = ANACTRL_GP0PLL_CTRL5,  .def = 0x3927200a },
+	{ .reg = ANACTRL_GP0PLL_CTRL6,	.def = 0x56540000 },
+};
+
+static const struct pll_mult_range c3_gp0_pll_mult_range = {
+	.min = 125,
+	.max = 250,
+};
+
+static struct clk_regmap c3_gp0_pll_dco = {
+	.data = &(struct meson_clk_pll_data) {
+		.en = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 0,
+			.width   = 9,
+		},
+		.frac = {
+			.reg_off = ANACTRL_GP0PLL_CTRL1,
+			.shift   = 0,
+			.width   = 19,
+		},
+		.n = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &c3_gp0_pll_mult_range,
+		.init_regs = c3_gp0_pll_init_regs,
+		.init_count = ARRAY_SIZE(c3_gp0_pll_init_regs),
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "gp0_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "top",
+		},
+		.num_parents = 1,
+	},
+};
+
+/* The maximum frequency divider supports is 32, not 128(2^7) */
+static const struct clk_div_table c3_gp0_pll_od_table[] = {
+	{ 0,  1 },
+	{ 1,  2 },
+	{ 2,  4 },
+	{ 3,  8 },
+	{ 4, 16 },
+	{ 5, 32 },
+	{ /* sentinel */ }
+};
+
+static struct clk_regmap c3_gp0_pll = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_GP0PLL_CTRL0,
+		.shift = 16,
+		.width = 3,
+		.table = c3_gp0_pll_od_table,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "gp0_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_gp0_pll_dco.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct reg_sequence c3_hifi_pll_init_regs[] = {
+	{ .reg = ANACTRL_HIFIPLL_CTRL2,	.def = 0x0 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL3,	.def = 0x6a285c00 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL4, .def = 0x65771290 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL5, .def = 0x3927200a },
+	{ .reg = ANACTRL_HIFIPLL_CTRL6,	.def = 0x56540000 },
+};
+
+static struct clk_regmap c3_hifi_pll_dco = {
+	.data = &(struct meson_clk_pll_data) {
+		.en = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.frac = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL1,
+			.shift   = 0,
+			.width   = 19,
+		},
+		.n = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &c3_gp0_pll_mult_range,
+		.init_regs = c3_hifi_pll_init_regs,
+		.init_count = ARRAY_SIZE(c3_hifi_pll_init_regs),
+		.frac_max = 100000,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "hifi_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "top",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap c3_hifi_pll = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_HIFIPLL_CTRL0,
+		.shift = 16,
+		.width = 2,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "hifi_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_hifi_pll_dco.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct reg_sequence c3_mclk_pll_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL1,	.def = 0x1420500f },
+	{ .reg = ANACTRL_MPLL_CTRL2,	.def = 0x00023041 },
+	{ .reg = ANACTRL_MPLL_CTRL3,	.def = 0x18180000 },
+	{ .reg = ANACTRL_MPLL_CTRL2,	.def = 0x00023001 }
+};
+
+static const struct pll_mult_range c3_mclk_pll_mult_range = {
+	.min = 67,
+	.max = 133,
+};
+
+static struct clk_regmap c3_mclk_pll_dco = {
+	.data = &(struct meson_clk_pll_data) {
+		.en = {
+			.reg_off = ANACTRL_MPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_MPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_MPLL_CTRL0,
+			.shift   = 16,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_MPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_MPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &c3_mclk_pll_mult_range,
+		.init_regs = c3_mclk_pll_init_regs,
+		.init_count = ARRAY_SIZE(c3_mclk_pll_init_regs),
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "mclk",
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct clk_div_table c3_mpll_pll_od_table[] = {
+	{ 0,  1 },
+	{ 1,  2 },
+	{ 2,  4 },
+	{ 3,  8 },
+	{ 4, 16 },
+	{ /* sentinel */ }
+};
+
+static struct clk_regmap c3_mclk_pll_od = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_MPLL_CTRL0,
+		.shift = 12,
+		.width = 3,
+		.table = c3_mpll_pll_od_table,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk_pll_od",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk_pll_dco.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+/* both value 0 and 1 gives divide the input rate by one */
+static struct clk_regmap c3_mclk_pll = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.shift = 16,
+		.width = 5,
+		.flags = CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk_pll_od.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct clk_parent_data c3_mclk_parents[] = {
+	{ .hw = &c3_mclk_pll.hw },
+	{ .fw_name = "mclk" },
+	{ .hw = &c3_fclk_50m.hw }
+};
+
+static struct clk_regmap c3_mclk0_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.mask = 0x3,
+		.shift = 4,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk0_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = c3_mclk_parents,
+		.num_parents = ARRAY_SIZE(c3_mclk_parents),
+	},
+};
+
+static struct clk_regmap c3_mclk0_div_en = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.bit_idx = 1,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk0_div_en",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk0_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap c3_mclk0_div = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.shift = 2,
+		.width = 1,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk0_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk0_div_en.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap c3_mclk0 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.bit_idx = 0,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk0",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk0_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap c3_mclk1_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.mask = 0x3,
+		.shift = 12,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk1_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = c3_mclk_parents,
+		.num_parents = ARRAY_SIZE(c3_mclk_parents),
+	},
+};
+
+static struct clk_regmap c3_mclk1_div_en = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.bit_idx = 9,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk1_div_en",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk1_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap c3_mclk1_div = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.shift = 10,
+		.width = 1,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk1_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk1_div_en.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap c3_mclk1 = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = ANACTRL_MPLL_CTRL4,
+		.bit_idx = 8,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mclk1",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&c3_mclk1_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_hw *c3_pll_hw_clks[] = {
+	[CLKID_FCLK_50M_EN]	= &c3_fclk_50m_en.hw,
+	[CLKID_FCLK_50M]	= &c3_fclk_50m.hw,
+	[CLKID_FCLK_DIV2_DIV]	= &c3_fclk_div2_div.hw,
+	[CLKID_FCLK_DIV2]	= &c3_fclk_div2.hw,
+	[CLKID_FCLK_DIV2P5_DIV]	= &c3_fclk_div2p5_div.hw,
+	[CLKID_FCLK_DIV2P5]	= &c3_fclk_div2p5.hw,
+	[CLKID_FCLK_DIV3_DIV]	= &c3_fclk_div3_div.hw,
+	[CLKID_FCLK_DIV3]	= &c3_fclk_div3.hw,
+	[CLKID_FCLK_DIV4_DIV]	= &c3_fclk_div4_div.hw,
+	[CLKID_FCLK_DIV4]	= &c3_fclk_div4.hw,
+	[CLKID_FCLK_DIV5_DIV]	= &c3_fclk_div5_div.hw,
+	[CLKID_FCLK_DIV5]	= &c3_fclk_div5.hw,
+	[CLKID_FCLK_DIV7_DIV]	= &c3_fclk_div7_div.hw,
+	[CLKID_FCLK_DIV7]	= &c3_fclk_div7.hw,
+	[CLKID_GP0_PLL_DCO]	= &c3_gp0_pll_dco.hw,
+	[CLKID_GP0_PLL]		= &c3_gp0_pll.hw,
+	[CLKID_HIFI_PLL_DCO]	= &c3_hifi_pll_dco.hw,
+	[CLKID_HIFI_PLL]	= &c3_hifi_pll.hw,
+	[CLKID_MCLK_PLL_DCO]	= &c3_mclk_pll_dco.hw,
+	[CLKID_MCLK_PLL_OD]	= &c3_mclk_pll_od.hw,
+	[CLKID_MCLK_PLL]	= &c3_mclk_pll.hw,
+	[CLKID_MCLK0_SEL]	= &c3_mclk0_sel.hw,
+	[CLKID_MCLK0_SEL_EN]	= &c3_mclk0_div_en.hw,
+	[CLKID_MCLK0_DIV]	= &c3_mclk0_div.hw,
+	[CLKID_MCLK0]		= &c3_mclk0.hw,
+	[CLKID_MCLK1_SEL]	= &c3_mclk1_sel.hw,
+	[CLKID_MCLK1_SEL_EN]	= &c3_mclk1_div_en.hw,
+	[CLKID_MCLK1_DIV]	= &c3_mclk1_div.hw,
+	[CLKID_MCLK1]		= &c3_mclk1.hw
+};
+
+static const struct meson_clkc_data c3_pll_clkc_data = {
+	.hw_clks = {
+		.hws = c3_pll_hw_clks,
+		.num = ARRAY_SIZE(c3_pll_hw_clks),
+	},
+};
+
+static const struct of_device_id c3_pll_clkc_match_table[] = {
+	{
+		.compatible = "amlogic,c3-pll-clkc",
+		.data = &c3_pll_clkc_data,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, c3_pll_clkc_match_table);
+
+static struct platform_driver c3_pll_clkc_driver = {
+	.probe		= meson_clkc_mmio_probe,
+	.driver		= {
+		.name	= "c3-pll-clkc",
+		.of_match_table = c3_pll_clkc_match_table,
+	},
+};
+module_platform_driver(c3_pll_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic C3 PLL Clock Controller driver");
+MODULE_AUTHOR("Chuan Liu <chuan.liu@amlogic.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-cpu-dyndiv.c

@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "clk-cpu-dyndiv.h"
+
+static inline struct meson_clk_cpu_dyndiv_data *
+meson_clk_cpu_dyndiv_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_cpu_dyndiv_data *)clk->data;
+}
+
+static unsigned long meson_clk_cpu_dyndiv_recalc_rate(struct clk_hw *hw,
+						      unsigned long prate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_cpu_dyndiv_data *data = meson_clk_cpu_dyndiv_data(clk);
+
+	return divider_recalc_rate(hw, prate,
+				   meson_parm_read(clk->map, &data->div),
+				   NULL, 0, data->div.width);
+}
+
+static int meson_clk_cpu_dyndiv_determine_rate(struct clk_hw *hw,
+					       struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_cpu_dyndiv_data *data = meson_clk_cpu_dyndiv_data(clk);
+
+	return divider_determine_rate(hw, req, NULL, data->div.width, 0);
+}
+
+static int meson_clk_cpu_dyndiv_set_rate(struct clk_hw *hw, unsigned long rate,
+					  unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_cpu_dyndiv_data *data = meson_clk_cpu_dyndiv_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = divider_get_val(rate, parent_rate, NULL, data->div.width, 0);
+	if (ret < 0)
+		return ret;
+
+	val = (unsigned int)ret << data->div.shift;
+
+	/* Write the SYS_CPU_DYN_ENABLE bit before changing the divider */
+	meson_parm_write(clk->map, &data->dyn, 1);
+
+	/* Update the divider while removing the SYS_CPU_DYN_ENABLE bit */
+	return regmap_update_bits(clk->map, data->div.reg_off,
+				  SETPMASK(data->div.width, data->div.shift) |
+				  SETPMASK(data->dyn.width, data->dyn.shift),
+				  val);
+};
+
+const struct clk_ops meson_clk_cpu_dyndiv_ops = {
+	.init = clk_regmap_init,
+	.recalc_rate = meson_clk_cpu_dyndiv_recalc_rate,
+	.determine_rate = meson_clk_cpu_dyndiv_determine_rate,
+	.set_rate = meson_clk_cpu_dyndiv_set_rate,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_cpu_dyndiv_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic CPU Dynamic Clock divider");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-cpu-dyndiv.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef __MESON_CLK_CPU_DYNDIV_H
+#define __MESON_CLK_CPU_DYNDIV_H
+
+#include <linux/clk-provider.h>
+#include "parm.h"
+
+struct meson_clk_cpu_dyndiv_data {
+	struct parm div;
+	struct parm dyn;
+};
+
+extern const struct clk_ops meson_clk_cpu_dyndiv_ops;
+
+#endif /* __MESON_CLK_CPU_DYNDIV_H */

linux-7.2.3/drivers/clk/meson/clk-dualdiv.c

@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2017 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+/*
+ * The AO Domain embeds a dual/divider to generate a more precise
+ * 32,768KHz clock for low-power suspend mode and CEC.
+ *     ______   ______
+ *    |      | |      |
+ *    | Div1 |-| Cnt1 |
+ *   /|______| |______|\
+ * -|  ______   ______  X--> Out
+ *   \|      | |      |/
+ *    | Div2 |-| Cnt2 |
+ *    |______| |______|
+ *
+ * The dividing can be switched to single or dual, with a counter
+ * for each divider to set when the switching is done.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "clk-dualdiv.h"
+
+static inline struct meson_clk_dualdiv_data *
+meson_clk_dualdiv_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_dualdiv_data *)clk->data;
+}
+
+static unsigned long
+__dualdiv_param_to_rate(unsigned long parent_rate,
+			const struct meson_clk_dualdiv_param *p)
+{
+	if (!p->dual)
+		return DIV_ROUND_CLOSEST(parent_rate, p->n1);
+
+	return DIV_ROUND_CLOSEST(parent_rate * (p->m1 + p->m2),
+				 p->n1 * p->m1 + p->n2 * p->m2);
+}
+
+static unsigned long meson_clk_dualdiv_recalc_rate(struct clk_hw *hw,
+						   unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_dualdiv_data *dualdiv = meson_clk_dualdiv_data(clk);
+	struct meson_clk_dualdiv_param setting;
+
+	setting.dual = meson_parm_read(clk->map, &dualdiv->dual);
+	setting.n1 = meson_parm_read(clk->map, &dualdiv->n1) + 1;
+	setting.m1 = meson_parm_read(clk->map, &dualdiv->m1) + 1;
+	setting.n2 = meson_parm_read(clk->map, &dualdiv->n2) + 1;
+	setting.m2 = meson_parm_read(clk->map, &dualdiv->m2) + 1;
+
+	return __dualdiv_param_to_rate(parent_rate, &setting);
+}
+
+static const struct meson_clk_dualdiv_param *
+__dualdiv_get_setting(unsigned long rate, unsigned long parent_rate,
+		      struct meson_clk_dualdiv_data *dualdiv)
+{
+	const struct meson_clk_dualdiv_param *table = dualdiv->table;
+	unsigned long best = 0, now = 0;
+	unsigned int i, best_i = 0;
+
+	if (!table)
+		return NULL;
+
+	for (i = 0; table[i].n1; i++) {
+		now = __dualdiv_param_to_rate(parent_rate, &table[i]);
+
+		/* If we get an exact match, don't bother any further */
+		if (now == rate) {
+			return &table[i];
+		} else if (abs(now - rate) < abs(best - rate)) {
+			best = now;
+			best_i = i;
+		}
+	}
+
+	return (struct meson_clk_dualdiv_param *)&table[best_i];
+}
+
+static int meson_clk_dualdiv_determine_rate(struct clk_hw *hw,
+					    struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_dualdiv_data *dualdiv = meson_clk_dualdiv_data(clk);
+	const struct meson_clk_dualdiv_param *setting;
+
+	setting = __dualdiv_get_setting(req->rate, req->best_parent_rate,
+					dualdiv);
+	if (setting)
+		req->rate = __dualdiv_param_to_rate(req->best_parent_rate,
+						    setting);
+	else
+		req->rate = meson_clk_dualdiv_recalc_rate(hw,
+							  req->best_parent_rate);
+
+	return 0;
+}
+
+static int meson_clk_dualdiv_set_rate(struct clk_hw *hw, unsigned long rate,
+				      unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_dualdiv_data *dualdiv = meson_clk_dualdiv_data(clk);
+	const struct meson_clk_dualdiv_param *setting =
+		__dualdiv_get_setting(rate, parent_rate, dualdiv);
+
+	if (!setting)
+		return -EINVAL;
+
+	meson_parm_write(clk->map, &dualdiv->dual, setting->dual);
+	meson_parm_write(clk->map, &dualdiv->n1, setting->n1 - 1);
+	meson_parm_write(clk->map, &dualdiv->m1, setting->m1 - 1);
+	meson_parm_write(clk->map, &dualdiv->n2, setting->n2 - 1);
+	meson_parm_write(clk->map, &dualdiv->m2, setting->m2 - 1);
+
+	return 0;
+}
+
+const struct clk_ops meson_clk_dualdiv_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= meson_clk_dualdiv_recalc_rate,
+	.determine_rate	= meson_clk_dualdiv_determine_rate,
+	.set_rate	= meson_clk_dualdiv_set_rate,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_dualdiv_ops, "CLK_MESON");
+
+const struct clk_ops meson_clk_dualdiv_ro_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= meson_clk_dualdiv_recalc_rate,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_dualdiv_ro_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic dual divider driver");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-dualdiv.h

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_CLK_DUALDIV_H
+#define __MESON_CLK_DUALDIV_H
+
+#include <linux/clk-provider.h>
+#include "parm.h"
+
+struct meson_clk_dualdiv_param {
+	unsigned int n1;
+	unsigned int n2;
+	unsigned int m1;
+	unsigned int m2;
+	unsigned int dual;
+};
+
+struct meson_clk_dualdiv_data {
+	struct parm n1;
+	struct parm n2;
+	struct parm m1;
+	struct parm m2;
+	struct parm dual;
+	const struct meson_clk_dualdiv_param *table;
+};
+
+extern const struct clk_ops meson_clk_dualdiv_ops;
+extern const struct clk_ops meson_clk_dualdiv_ro_ops;
+
+#endif /* __MESON_CLK_DUALDIV_H */

linux-7.2.3/drivers/clk/meson/clk-mpll.c

@@ -0,0 +1,176 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright (c) 2016 AmLogic, Inc.
+ * Author: Michael Turquette <mturquette@baylibre.com>
+ */
+
+/*
+ * MultiPhase Locked Loops are outputs from a PLL with additional frequency
+ * scaling capabilities. MPLL rates are calculated as:
+ *
+ * f(N2_integer, SDM_IN ) = 2.0G/(N2_integer + SDM_IN/16384)
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+#include "clk-regmap.h"
+#include "clk-mpll.h"
+
+#define SDM_DEN 16384
+#define N2_MIN	4
+#define N2_MAX	511
+
+static inline struct meson_clk_mpll_data *
+meson_clk_mpll_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_mpll_data *)clk->data;
+}
+
+static long rate_from_params(unsigned long parent_rate,
+			     unsigned int sdm,
+			     unsigned int n2)
+{
+	unsigned long divisor = (SDM_DEN * n2) + sdm;
+
+	if (n2 < N2_MIN)
+		return -EINVAL;
+
+	return DIV_ROUND_UP_ULL((u64)parent_rate * SDM_DEN, divisor);
+}
+
+static void params_from_rate(unsigned long requested_rate,
+			     unsigned long parent_rate,
+			     unsigned int *sdm,
+			     unsigned int *n2,
+			     u8 flags)
+{
+	uint64_t div = parent_rate;
+	uint64_t frac = do_div(div, requested_rate);
+
+	frac *= SDM_DEN;
+
+	if (flags & CLK_MESON_MPLL_ROUND_CLOSEST)
+		*sdm = DIV_ROUND_CLOSEST_ULL(frac, requested_rate);
+	else
+		*sdm = DIV_ROUND_UP_ULL(frac, requested_rate);
+
+	if (*sdm == SDM_DEN) {
+		*sdm = 0;
+		div += 1;
+	}
+
+	if (div < N2_MIN) {
+		*n2 = N2_MIN;
+		*sdm = 0;
+	} else if (div > N2_MAX) {
+		*n2 = N2_MAX;
+		*sdm = SDM_DEN - 1;
+	} else {
+		*n2 = div;
+	}
+}
+
+static unsigned long mpll_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_mpll_data *mpll = meson_clk_mpll_data(clk);
+	unsigned int sdm, n2;
+	long rate;
+
+	sdm = meson_parm_read(clk->map, &mpll->sdm);
+	n2 = meson_parm_read(clk->map, &mpll->n2);
+
+	rate = rate_from_params(parent_rate, sdm, n2);
+	return rate < 0 ? 0 : rate;
+}
+
+static int mpll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_mpll_data *mpll = meson_clk_mpll_data(clk);
+	unsigned int sdm, n2;
+	long rate;
+
+	params_from_rate(req->rate, req->best_parent_rate, &sdm, &n2,
+			 mpll->flags);
+
+	rate = rate_from_params(req->best_parent_rate, sdm, n2);
+	if (rate < 0)
+		return rate;
+
+	req->rate = rate;
+	return 0;
+}
+
+static int mpll_set_rate(struct clk_hw *hw,
+			 unsigned long rate,
+			 unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_mpll_data *mpll = meson_clk_mpll_data(clk);
+	unsigned int sdm, n2;
+
+	params_from_rate(rate, parent_rate, &sdm, &n2, mpll->flags);
+
+	/* Set the fractional part */
+	meson_parm_write(clk->map, &mpll->sdm, sdm);
+
+	/* Set the integer divider part */
+	meson_parm_write(clk->map, &mpll->n2, n2);
+
+	return 0;
+}
+
+static int mpll_init(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_mpll_data *mpll = meson_clk_mpll_data(clk);
+	int ret;
+
+	ret = clk_regmap_init(hw);
+	if (ret)
+		return ret;
+
+	if (mpll->init_count)
+		regmap_multi_reg_write(clk->map, mpll->init_regs,
+				       mpll->init_count);
+
+	/* Enable the fractional part */
+	meson_parm_write(clk->map, &mpll->sdm_en, 1);
+
+	/* Set spread spectrum if possible */
+	if (MESON_PARM_APPLICABLE(&mpll->ssen)) {
+		unsigned int ss =
+			mpll->flags & CLK_MESON_MPLL_SPREAD_SPECTRUM ? 1 : 0;
+		meson_parm_write(clk->map, &mpll->ssen, ss);
+	}
+
+	/* Set the magic misc bit if required */
+	if (MESON_PARM_APPLICABLE(&mpll->misc))
+		meson_parm_write(clk->map, &mpll->misc, 1);
+
+	return 0;
+}
+
+const struct clk_ops meson_clk_mpll_ro_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= mpll_recalc_rate,
+	.determine_rate	= mpll_determine_rate,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_mpll_ro_ops, "CLK_MESON");
+
+const struct clk_ops meson_clk_mpll_ops = {
+	.recalc_rate	= mpll_recalc_rate,
+	.determine_rate	= mpll_determine_rate,
+	.set_rate	= mpll_set_rate,
+	.init		= mpll_init,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_mpll_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic MPLL driver");
+MODULE_AUTHOR("Michael Turquette <mturquette@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-mpll.h

@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_CLK_MPLL_H
+#define __MESON_CLK_MPLL_H
+
+#include <linux/clk-provider.h>
+#include <linux/spinlock.h>
+
+#include "parm.h"
+
+struct meson_clk_mpll_data {
+	struct parm sdm;
+	struct parm sdm_en;
+	struct parm n2;
+	struct parm ssen;
+	struct parm misc;
+	const struct reg_sequence *init_regs;
+	unsigned int init_count;
+	u8 flags;
+};
+
+#define CLK_MESON_MPLL_ROUND_CLOSEST	BIT(0)
+#define CLK_MESON_MPLL_SPREAD_SPECTRUM	BIT(1)
+
+extern const struct clk_ops meson_clk_mpll_ro_ops;
+extern const struct clk_ops meson_clk_mpll_ops;
+
+#endif /* __MESON_CLK_MPLL_H */

linux-7.2.3/drivers/clk/meson/clk-phase.c

@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "clk-phase.h"
+
+#define phase_step(_width) (360 / (1 << (_width)))
+
+static inline struct meson_clk_phase_data *
+meson_clk_phase_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_phase_data *)clk->data;
+}
+
+static int meson_clk_degrees_from_val(unsigned int val, unsigned int width)
+{
+	return phase_step(width) * val;
+}
+
+static unsigned int meson_clk_degrees_to_val(int degrees, unsigned int width)
+{
+	unsigned int val = DIV_ROUND_CLOSEST(degrees, phase_step(width));
+
+	/*
+	 * This last calculation is here for cases when degrees is rounded
+	 * to 360, in which case val == (1 << width).
+	 */
+	return val % (1 << width);
+}
+
+static int meson_clk_phase_get_phase(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_phase_data *phase = meson_clk_phase_data(clk);
+	unsigned int val;
+
+	val = meson_parm_read(clk->map, &phase->ph);
+
+	return meson_clk_degrees_from_val(val, phase->ph.width);
+}
+
+static int meson_clk_phase_set_phase(struct clk_hw *hw, int degrees)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_phase_data *phase = meson_clk_phase_data(clk);
+	unsigned int val;
+
+	val = meson_clk_degrees_to_val(degrees, phase->ph.width);
+	meson_parm_write(clk->map, &phase->ph, val);
+
+	return 0;
+}
+
+const struct clk_ops meson_clk_phase_ops = {
+	.init		= clk_regmap_init,
+	.get_phase	= meson_clk_phase_get_phase,
+	.set_phase	= meson_clk_phase_set_phase,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_phase_ops, "CLK_MESON");
+
+/*
+ * This is a special clock for the audio controller.
+ * The phase of mst_sclk clock output can be controlled independently
+ * for the outside world (ph0), the tdmout (ph1) and tdmin (ph2).
+ * Controlling these 3 phases as just one makes things simpler and
+ * give the same clock view to all the element on the i2s bus.
+ * If necessary, we can still control the phase in the tdm block
+ * which makes these independent control redundant.
+ */
+static inline struct meson_clk_triphase_data *
+meson_clk_triphase_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_triphase_data *)clk->data;
+}
+
+static int meson_clk_triphase_sync(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_triphase_data *tph = meson_clk_triphase_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = clk_regmap_init(hw);
+	if (ret)
+		return ret;
+
+	/* Get phase 0 and sync it to phase 1 and 2 */
+	val = meson_parm_read(clk->map, &tph->ph0);
+	meson_parm_write(clk->map, &tph->ph1, val);
+	meson_parm_write(clk->map, &tph->ph2, val);
+
+	return 0;
+}
+
+static int meson_clk_triphase_get_phase(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_triphase_data *tph = meson_clk_triphase_data(clk);
+	unsigned int val;
+
+	/* Phase are in sync, reading phase 0 is enough */
+	val = meson_parm_read(clk->map, &tph->ph0);
+
+	return meson_clk_degrees_from_val(val, tph->ph0.width);
+}
+
+static int meson_clk_triphase_set_phase(struct clk_hw *hw, int degrees)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_triphase_data *tph = meson_clk_triphase_data(clk);
+	unsigned int val;
+
+	val = meson_clk_degrees_to_val(degrees, tph->ph0.width);
+	meson_parm_write(clk->map, &tph->ph0, val);
+	meson_parm_write(clk->map, &tph->ph1, val);
+	meson_parm_write(clk->map, &tph->ph2, val);
+
+	return 0;
+}
+
+const struct clk_ops meson_clk_triphase_ops = {
+	.init		= meson_clk_triphase_sync,
+	.get_phase	= meson_clk_triphase_get_phase,
+	.set_phase	= meson_clk_triphase_set_phase,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_triphase_ops, "CLK_MESON");
+
+/*
+ * This is a special clock for the audio controller.
+ * This drive a bit clock inverter for which the
+ * opposite value of the inverter bit needs to be manually
+ * set into another bit
+ */
+static inline struct meson_sclk_ws_inv_data *
+meson_sclk_ws_inv_data(struct clk_regmap *clk)
+{
+	return (struct meson_sclk_ws_inv_data *)clk->data;
+}
+
+static int meson_sclk_ws_inv_sync(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = clk_regmap_init(hw);
+	if (ret)
+		return ret;
+
+	/* Get phase and sync the inverted value to ws */
+	val = meson_parm_read(clk->map, &tph->ph);
+	meson_parm_write(clk->map, &tph->ws, val ? 0 : 1);
+
+	return 0;
+}
+
+static int meson_sclk_ws_inv_get_phase(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+	unsigned int val;
+
+	val = meson_parm_read(clk->map, &tph->ph);
+
+	return meson_clk_degrees_from_val(val, tph->ph.width);
+}
+
+static int meson_sclk_ws_inv_set_phase(struct clk_hw *hw, int degrees)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+	unsigned int val;
+
+	val = meson_clk_degrees_to_val(degrees, tph->ph.width);
+	meson_parm_write(clk->map, &tph->ph, val);
+	meson_parm_write(clk->map, &tph->ws, val ? 0 : 1);
+	return 0;
+}
+
+const struct clk_ops meson_sclk_ws_inv_ops = {
+	.init		= meson_sclk_ws_inv_sync,
+	.get_phase	= meson_sclk_ws_inv_get_phase,
+	.set_phase	= meson_sclk_ws_inv_set_phase,
+};
+EXPORT_SYMBOL_NS_GPL(meson_sclk_ws_inv_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic phase driver");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-phase.h

@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_CLK_PHASE_H
+#define __MESON_CLK_PHASE_H
+
+#include <linux/clk-provider.h>
+#include "parm.h"
+
+struct meson_clk_phase_data {
+	struct parm ph;
+};
+
+struct meson_clk_triphase_data {
+	struct parm ph0;
+	struct parm ph1;
+	struct parm ph2;
+};
+
+struct meson_sclk_ws_inv_data {
+	struct parm ph;
+	struct parm ws;
+};
+
+extern const struct clk_ops meson_clk_phase_ops;
+extern const struct clk_ops meson_clk_triphase_ops;
+extern const struct clk_ops meson_sclk_ws_inv_ops;
+
+#endif /* __MESON_CLK_PHASE_H */

linux-7.2.3/drivers/clk/meson/clk-pll.c

@@ -0,0 +1,507 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2015 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ *
+ * Copyright (c) 2018 Baylibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+/*
+ * In the most basic form, a Meson PLL is composed as follows:
+ *
+ *                     PLL
+ *        +--------------------------------+
+ *        |                                |
+ *        |             +--+               |
+ *  in >>-----[ /N ]--->|  |      +-----+  |
+ *        |             |  |------| DCO |---->> out
+ *        |  +--------->|  |      +--v--+  |
+ *        |  |          +--+         |     |
+ *        |  |                       |     |
+ *        |  +--[ *(M + (F/Fmax) ]<--+     |
+ *        |                                |
+ *        +--------------------------------+
+ *
+ * out = in * (m + frac / frac_max) / n
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "clk-pll.h"
+
+static inline struct meson_clk_pll_data *
+meson_clk_pll_data(struct clk_regmap *clk)
+{
+	return (struct meson_clk_pll_data *)clk->data;
+}
+
+static int __pll_round_closest_mult(struct meson_clk_pll_data *pll)
+{
+	if ((pll->flags & CLK_MESON_PLL_ROUND_CLOSEST) &&
+	    !MESON_PARM_APPLICABLE(&pll->frac))
+		return 1;
+
+	return 0;
+}
+
+static unsigned long __pll_params_to_rate(unsigned long parent_rate,
+					  unsigned int m, unsigned int n,
+					  unsigned int frac,
+					  struct meson_clk_pll_data *pll)
+{
+	u64 rate = (u64)parent_rate * m;
+	unsigned int frac_max = pll->frac_max ? pll->frac_max :
+						(1 << pll->frac.width);
+
+	if (frac && MESON_PARM_APPLICABLE(&pll->frac)) {
+		u64 frac_rate = (u64)parent_rate * frac;
+
+		rate += DIV_ROUND_UP_ULL(frac_rate, frac_max);
+	}
+
+	return DIV_ROUND_UP_ULL(rate, n);
+}
+
+static unsigned long meson_clk_pll_recalc_rate(struct clk_hw *hw,
+						unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+	unsigned int m, n, frac;
+
+	n = meson_parm_read(clk->map, &pll->n);
+
+	/*
+	 * On some HW, N is set to zero on init. This value is invalid as
+	 * it would result in a division by zero. The rate can't be
+	 * calculated in this case
+	 */
+	if (n == 0)
+		return 0;
+
+	m = meson_parm_read(clk->map, &pll->m);
+
+	frac = MESON_PARM_APPLICABLE(&pll->frac) ?
+		meson_parm_read(clk->map, &pll->frac) :
+		0;
+
+	return __pll_params_to_rate(parent_rate, m, n, frac, pll);
+}
+
+static unsigned int __pll_params_with_frac(unsigned long rate,
+					   unsigned long parent_rate,
+					   unsigned int m,
+					   unsigned int n,
+					   struct meson_clk_pll_data *pll)
+{
+	unsigned int frac_max = pll->frac_max ? pll->frac_max :
+						(1 << pll->frac.width);
+	u64 val = (u64)rate * n;
+
+	/* Bail out if we are already over the requested rate */
+	if (rate < parent_rate * m / n)
+		return 0;
+
+	if (pll->flags & CLK_MESON_PLL_ROUND_CLOSEST)
+		val = DIV_ROUND_CLOSEST_ULL(val * frac_max, parent_rate);
+	else
+		val = div_u64(val * frac_max, parent_rate);
+
+	val -= m * frac_max;
+
+	return min((unsigned int)val, (frac_max - 1));
+}
+
+static bool meson_clk_pll_is_better(unsigned long rate,
+				    unsigned long best,
+				    unsigned long now,
+				    struct meson_clk_pll_data *pll)
+{
+	if (__pll_round_closest_mult(pll)) {
+		/* Round Closest */
+		if (abs(now - rate) < abs(best - rate))
+			return true;
+	} else {
+		/* Round down */
+		if (now <= rate && best < now)
+			return true;
+	}
+
+	return false;
+}
+
+static int meson_clk_get_pll_table_index(unsigned int index,
+					 unsigned int *m,
+					 unsigned int *n,
+					 struct meson_clk_pll_data *pll)
+{
+	if (!pll->table[index].n)
+		return -EINVAL;
+
+	*m = pll->table[index].m;
+	*n = pll->table[index].n;
+
+	return 0;
+}
+
+static unsigned int meson_clk_get_pll_range_m(unsigned long rate,
+					      unsigned long parent_rate,
+					      unsigned int n,
+					      struct meson_clk_pll_data *pll)
+{
+	u64 val = (u64)rate * n;
+
+	if (__pll_round_closest_mult(pll))
+		return DIV_ROUND_CLOSEST_ULL(val, parent_rate);
+
+	return div_u64(val,  parent_rate);
+}
+
+static int meson_clk_get_pll_range_index(unsigned long rate,
+					 unsigned long parent_rate,
+					 unsigned int index,
+					 unsigned int *m,
+					 unsigned int *n,
+					 struct meson_clk_pll_data *pll)
+{
+	*n = index + 1;
+
+	/* Check the predivider range */
+	if (*n >= (1 << pll->n.width))
+		return -EINVAL;
+
+	if (*n == 1) {
+		/* Get the boundaries out the way */
+		if (rate <= pll->range->min * parent_rate) {
+			*m = pll->range->min;
+			return -ENODATA;
+		} else if (rate >= pll->range->max * parent_rate) {
+			*m = pll->range->max;
+			return -ENODATA;
+		}
+	}
+
+	*m = meson_clk_get_pll_range_m(rate, parent_rate, *n, pll);
+
+	/* the pre-divider gives a multiplier too big - stop */
+	if (*m >= (1 << pll->m.width))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int meson_clk_get_pll_get_index(unsigned long rate,
+				       unsigned long parent_rate,
+				       unsigned int index,
+				       unsigned int *m,
+				       unsigned int *n,
+				       struct meson_clk_pll_data *pll)
+{
+	if (pll->range)
+		return meson_clk_get_pll_range_index(rate, parent_rate,
+						     index, m, n, pll);
+	else if (pll->table)
+		return meson_clk_get_pll_table_index(index, m, n, pll);
+
+	return -EINVAL;
+}
+
+static int meson_clk_get_pll_settings(unsigned long rate,
+				      unsigned long parent_rate,
+				      unsigned int *best_m,
+				      unsigned int *best_n,
+				      struct meson_clk_pll_data *pll)
+{
+	unsigned long best = 0, now = 0;
+	unsigned int i, m, n;
+	int ret;
+
+	for (i = 0, ret = 0; !ret; i++) {
+		ret = meson_clk_get_pll_get_index(rate, parent_rate,
+						  i, &m, &n, pll);
+		if (ret == -EINVAL)
+			break;
+
+		now = __pll_params_to_rate(parent_rate, m, n, 0, pll);
+		if (meson_clk_pll_is_better(rate, best, now, pll)) {
+			best = now;
+			*best_m = m;
+			*best_n = n;
+
+			if (now == rate)
+				break;
+		}
+	}
+
+	return best ? 0 : -EINVAL;
+}
+
+static int meson_clk_pll_determine_rate(struct clk_hw *hw,
+					struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+	unsigned int m, n, frac;
+	unsigned long round;
+	int ret;
+
+	ret = meson_clk_get_pll_settings(req->rate, req->best_parent_rate,
+					 &m, &n, pll);
+	if (ret)
+		return ret;
+
+	round = __pll_params_to_rate(req->best_parent_rate, m, n, 0, pll);
+
+	if (!MESON_PARM_APPLICABLE(&pll->frac) || req->rate == round) {
+		req->rate = round;
+		return 0;
+	}
+
+	/*
+	 * The rate provided by the setting is not an exact match, let's
+	 * try to improve the result using the fractional parameter
+	 */
+	frac = __pll_params_with_frac(req->rate, req->best_parent_rate, m, n, pll);
+	req->rate = __pll_params_to_rate(req->best_parent_rate, m, n, frac, pll);
+
+	return 0;
+}
+
+static int meson_clk_pll_wait_lock(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+	int delay = 5000;
+
+	do {
+		/* Is the clock locked now ? Time out after 100ms. */
+		if (meson_parm_read(clk->map, &pll->l))
+			return 0;
+
+		udelay(20);
+	} while (--delay);
+
+	return -ETIMEDOUT;
+}
+
+static int meson_clk_pll_is_enabled(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+
+	if (MESON_PARM_APPLICABLE(&pll->rst) &&
+	    meson_parm_read(clk->map, &pll->rst))
+		return 0;
+
+	if (!meson_parm_read(clk->map, &pll->en) ||
+	    !meson_parm_read(clk->map, &pll->l))
+		return 0;
+
+	return 1;
+}
+
+static int meson_clk_pll_init(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+	int ret;
+
+	ret = clk_regmap_init(hw);
+	if (ret)
+		return ret;
+
+	/*
+	 * Keep the clock running, which was already initialized and enabled
+	 * from the bootloader stage, to avoid any glitches.
+	 */
+	if ((pll->flags & CLK_MESON_PLL_NOINIT_ENABLED) &&
+	    meson_clk_pll_is_enabled(hw))
+		return 0;
+
+	if (pll->init_count) {
+		if (MESON_PARM_APPLICABLE(&pll->rst))
+			meson_parm_write(clk->map, &pll->rst, 1);
+
+		regmap_multi_reg_write(clk->map, pll->init_regs,
+				       pll->init_count);
+
+		if (MESON_PARM_APPLICABLE(&pll->rst))
+			meson_parm_write(clk->map, &pll->rst, 0);
+	}
+
+	return 0;
+}
+
+static int meson_clk_pcie_pll_enable(struct clk_hw *hw)
+{
+	int retries = 10;
+
+	do {
+		meson_clk_pll_init(hw);
+		if (!meson_clk_pll_wait_lock(hw))
+			return 0;
+		pr_info("Retry enabling PCIe PLL clock\n");
+	} while (--retries);
+
+	return -EIO;
+}
+
+static int meson_clk_pll_enable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+
+	/* do nothing if the PLL is already enabled */
+	if (clk_hw_is_enabled(hw))
+		return 0;
+
+	/* Make sure the pll is in reset */
+	if (MESON_PARM_APPLICABLE(&pll->rst))
+		meson_parm_write(clk->map, &pll->rst, 1);
+
+	/* Enable the pll */
+	meson_parm_write(clk->map, &pll->en, 1);
+
+	/* Take the pll out reset */
+	if (MESON_PARM_APPLICABLE(&pll->rst))
+		meson_parm_write(clk->map, &pll->rst, 0);
+
+	/*
+	 * Compared with the previous SoCs, self-adaption current module
+	 * is newly added for A1, keep the new power-on sequence to enable the
+	 * PLL. The sequence is:
+	 * 1. enable the pll, delay for 10us
+	 * 2. enable the pll self-adaption current module, delay for 40us
+	 * 3. enable the lock detect module
+	 */
+	if (MESON_PARM_APPLICABLE(&pll->current_en)) {
+		udelay(10);
+		meson_parm_write(clk->map, &pll->current_en, 1);
+		udelay(40);
+	}
+
+	if (MESON_PARM_APPLICABLE(&pll->l_detect)) {
+		meson_parm_write(clk->map, &pll->l_detect, 1);
+		meson_parm_write(clk->map, &pll->l_detect, 0);
+	}
+
+	if (meson_clk_pll_wait_lock(hw))
+		return -EIO;
+
+	return 0;
+}
+
+static void meson_clk_pll_disable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+
+	/* Put the pll is in reset */
+	if (MESON_PARM_APPLICABLE(&pll->rst))
+		meson_parm_write(clk->map, &pll->rst, 1);
+
+	/* Disable the pll */
+	meson_parm_write(clk->map, &pll->en, 0);
+
+	/* Disable PLL internal self-adaption current module */
+	if (MESON_PARM_APPLICABLE(&pll->current_en))
+		meson_parm_write(clk->map, &pll->current_en, 0);
+}
+
+static int meson_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+				  unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_clk_pll_data *pll = meson_clk_pll_data(clk);
+	unsigned int enabled, m, n, frac = 0;
+	unsigned long old_rate;
+	int ret;
+
+	if (parent_rate == 0 || rate == 0)
+		return -EINVAL;
+
+	old_rate = clk_hw_get_rate(hw);
+
+	ret = meson_clk_get_pll_settings(rate, parent_rate, &m, &n, pll);
+	if (ret)
+		return ret;
+
+	enabled = meson_parm_read(clk->map, &pll->en);
+	if (enabled)
+		meson_clk_pll_disable(hw);
+
+	meson_parm_write(clk->map, &pll->n, n);
+	meson_parm_write(clk->map, &pll->m, m);
+
+	if (MESON_PARM_APPLICABLE(&pll->frac)) {
+		frac = __pll_params_with_frac(rate, parent_rate, m, n, pll);
+		meson_parm_write(clk->map, &pll->frac, frac);
+	}
+
+	/* If the pll is stopped, bail out now */
+	if (!enabled)
+		return 0;
+
+	ret = meson_clk_pll_enable(hw);
+	if (ret) {
+		pr_warn("%s: pll %s didn't lock, trying to set old rate %lu\n",
+			__func__, clk_hw_get_name(hw), old_rate);
+		/*
+		 * FIXME: Do we really need/want this HACK ?
+		 * It looks unsafe. what happens if the clock gets into a
+		 * broken state and we can't lock back on the old_rate ? Looks
+		 * like an infinite recursion is possible
+		 */
+		meson_clk_pll_set_rate(hw, old_rate, parent_rate);
+	}
+
+	return ret;
+}
+
+/*
+ * The Meson G12A PCIE PLL is fined tuned to deliver a very precise
+ * 100MHz reference clock for the PCIe Analog PHY, and thus requires
+ * a strict register sequence to enable the PLL.
+ * To simplify, re-use the _init() op to enable the PLL and keep
+ * the other ops except set_rate since the rate is fixed.
+ */
+const struct clk_ops meson_clk_pcie_pll_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= meson_clk_pll_recalc_rate,
+	.determine_rate	= meson_clk_pll_determine_rate,
+	.is_enabled	= meson_clk_pll_is_enabled,
+	.enable		= meson_clk_pcie_pll_enable,
+	.disable	= meson_clk_pll_disable
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_pcie_pll_ops, "CLK_MESON");
+
+const struct clk_ops meson_clk_pll_ops = {
+	.init		= meson_clk_pll_init,
+	.recalc_rate	= meson_clk_pll_recalc_rate,
+	.determine_rate	= meson_clk_pll_determine_rate,
+	.set_rate	= meson_clk_pll_set_rate,
+	.is_enabled	= meson_clk_pll_is_enabled,
+	.enable		= meson_clk_pll_enable,
+	.disable	= meson_clk_pll_disable
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_pll_ops, "CLK_MESON");
+
+const struct clk_ops meson_clk_pll_ro_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= meson_clk_pll_recalc_rate,
+	.is_enabled	= meson_clk_pll_is_enabled,
+};
+EXPORT_SYMBOL_NS_GPL(meson_clk_pll_ro_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic PLL driver");
+MODULE_AUTHOR("Carlo Caione <carlo@endlessm.com>");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-pll.h

@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_CLK_PLL_H
+#define __MESON_CLK_PLL_H
+
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include "parm.h"
+
+struct pll_params_table {
+	unsigned int	m;
+	unsigned int	n;
+};
+
+struct pll_mult_range {
+	unsigned int	min;
+	unsigned int	max;
+};
+
+#define PLL_PARAMS(_m, _n)						\
+	{								\
+		.m		= (_m),					\
+		.n		= (_n),					\
+	}
+
+#define CLK_MESON_PLL_ROUND_CLOSEST	BIT(0)
+#define CLK_MESON_PLL_NOINIT_ENABLED	BIT(1)
+
+struct meson_clk_pll_data {
+	struct parm en;
+	struct parm m;
+	struct parm n;
+	struct parm frac;
+	struct parm l;
+	struct parm rst;
+	struct parm current_en;
+	struct parm l_detect;
+	const struct reg_sequence *init_regs;
+	unsigned int init_count;
+	const struct pll_params_table *table;
+	const struct pll_mult_range *range;
+	unsigned int frac_max;
+	u8 flags;
+};
+
+extern const struct clk_ops meson_clk_pll_ro_ops;
+extern const struct clk_ops meson_clk_pll_ops;
+extern const struct clk_ops meson_clk_pcie_pll_ops;
+
+#endif /* __MESON_CLK_PLL_H */

linux-7.2.3/drivers/clk/meson/clk-regmap.c

@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/mfd/syscon.h>
+#include "clk-regmap.h"
+
+int clk_regmap_init(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct device_node *np, *parent_np;
+	struct device *dev;
+
+	/* Allow regmap to be preset as it was historically done */
+	if (clk->map)
+		return 0;
+
+	/*
+	 * FIXME: what follows couples the controller implementation
+	 * and clk_regmap clock type. This situation is not desirable
+	 * but temporary, until the controller is able to register
+	 * a hook to initialize a clock type
+	 */
+
+	/* Check the usual dev enabled controller with an basic IO regmap */
+	dev = clk_hw_get_dev(hw);
+	if (dev) {
+		clk->map = dev_get_regmap(dev, NULL);
+		if (clk->map)
+			return 0;
+	}
+
+	/* Move on to early and syscon based controllers */
+	np = clk_hw_get_of_node(hw);
+	if (np) {
+		parent_np = of_get_parent(np);
+		clk->map = syscon_node_to_regmap(parent_np);
+		of_node_put(parent_np);
+
+		if (!IS_ERR_OR_NULL(clk->map))
+			return 0;
+	}
+
+	/* Bail out if regmap can't be found */
+	return -EINVAL;
+}
+EXPORT_SYMBOL_NS_GPL(clk_regmap_init, "CLK_MESON");
+
+static int clk_regmap_gate_endisable(struct clk_hw *hw, int enable)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_gate_data *gate = clk_get_regmap_gate_data(clk);
+	int set = gate->flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0;
+
+	set ^= enable;
+
+	return regmap_update_bits(clk->map, gate->offset, BIT(gate->bit_idx),
+				  set ? BIT(gate->bit_idx) : 0);
+}
+
+static int clk_regmap_gate_enable(struct clk_hw *hw)
+{
+	return clk_regmap_gate_endisable(hw, 1);
+}
+
+static void clk_regmap_gate_disable(struct clk_hw *hw)
+{
+	clk_regmap_gate_endisable(hw, 0);
+}
+
+static int clk_regmap_gate_is_enabled(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_gate_data *gate = clk_get_regmap_gate_data(clk);
+	unsigned int val;
+
+	regmap_read(clk->map, gate->offset, &val);
+	if (gate->flags & CLK_GATE_SET_TO_DISABLE)
+		val ^= BIT(gate->bit_idx);
+
+	val &= BIT(gate->bit_idx);
+
+	return val ? 1 : 0;
+}
+
+const struct clk_ops clk_regmap_gate_ops = {
+	.init		= clk_regmap_init,
+	.enable = clk_regmap_gate_enable,
+	.disable = clk_regmap_gate_disable,
+	.is_enabled = clk_regmap_gate_is_enabled,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_gate_ops, "CLK_MESON");
+
+const struct clk_ops clk_regmap_gate_ro_ops = {
+	.init		= clk_regmap_init,
+	.is_enabled = clk_regmap_gate_is_enabled,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_gate_ro_ops, "CLK_MESON");
+
+static unsigned long clk_regmap_div_recalc_rate(struct clk_hw *hw,
+						unsigned long prate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_div_data *div = clk_get_regmap_div_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(clk->map, div->offset, &val);
+	if (ret)
+		/* Gives a hint that something is wrong */
+		return 0;
+
+	val >>= div->shift;
+	val &= clk_div_mask(div->width);
+	return divider_recalc_rate(hw, prate, val, div->table, div->flags,
+				   div->width);
+}
+
+static int clk_regmap_div_determine_rate(struct clk_hw *hw,
+					 struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_div_data *div = clk_get_regmap_div_data(clk);
+	unsigned int val;
+	int ret;
+
+	/* if read only, just return current value */
+	if (div->flags & CLK_DIVIDER_READ_ONLY) {
+		ret = regmap_read(clk->map, div->offset, &val);
+		if (ret)
+			return ret;
+
+		val >>= div->shift;
+		val &= clk_div_mask(div->width);
+
+		return divider_ro_determine_rate(hw, req, div->table,
+						 div->width, div->flags, val);
+	}
+
+	return divider_determine_rate(hw, req, div->table, div->width,
+				      div->flags);
+}
+
+static int clk_regmap_div_set_rate(struct clk_hw *hw, unsigned long rate,
+				   unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_div_data *div = clk_get_regmap_div_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = divider_get_val(rate, parent_rate, div->table, div->width,
+			      div->flags);
+	if (ret < 0)
+		return ret;
+
+	val = (unsigned int)ret << div->shift;
+	return regmap_update_bits(clk->map, div->offset,
+				  clk_div_mask(div->width) << div->shift, val);
+};
+
+/* Would prefer clk_regmap_div_ro_ops but clashes with qcom */
+
+const struct clk_ops clk_regmap_divider_ops = {
+	.init = clk_regmap_init,
+	.recalc_rate = clk_regmap_div_recalc_rate,
+	.determine_rate = clk_regmap_div_determine_rate,
+	.set_rate = clk_regmap_div_set_rate,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_divider_ops, "CLK_MESON");
+
+const struct clk_ops clk_regmap_divider_ro_ops = {
+	.init = clk_regmap_init,
+	.recalc_rate = clk_regmap_div_recalc_rate,
+	.determine_rate = clk_regmap_div_determine_rate,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_divider_ro_ops, "CLK_MESON");
+
+static u8 clk_regmap_mux_get_parent(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_mux_data *mux = clk_get_regmap_mux_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(clk->map, mux->offset, &val);
+	if (ret)
+		return ret;
+
+	val >>= mux->shift;
+	val &= mux->mask;
+	return clk_mux_val_to_index(hw, mux->table, mux->flags, val);
+}
+
+static int clk_regmap_mux_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_mux_data *mux = clk_get_regmap_mux_data(clk);
+	unsigned int val = clk_mux_index_to_val(mux->table, mux->flags, index);
+
+	return regmap_update_bits(clk->map, mux->offset,
+				  mux->mask << mux->shift,
+				  val << mux->shift);
+}
+
+static int clk_regmap_mux_determine_rate(struct clk_hw *hw,
+					 struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct clk_regmap_mux_data *mux = clk_get_regmap_mux_data(clk);
+
+	return clk_mux_determine_rate_flags(hw, req, mux->flags);
+}
+
+const struct clk_ops clk_regmap_mux_ops = {
+	.init		= clk_regmap_init,
+	.get_parent = clk_regmap_mux_get_parent,
+	.set_parent = clk_regmap_mux_set_parent,
+	.determine_rate = clk_regmap_mux_determine_rate,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_mux_ops, "CLK_MESON");
+
+const struct clk_ops clk_regmap_mux_ro_ops = {
+	.init		= clk_regmap_init,
+	.get_parent = clk_regmap_mux_get_parent,
+};
+EXPORT_SYMBOL_NS_GPL(clk_regmap_mux_ro_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic regmap backed clock driver");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/clk-regmap.h

@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __CLK_REGMAP_H
+#define __CLK_REGMAP_H
+
+#include <linux/device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+/**
+ * struct clk_regmap - regmap backed clock
+ *
+ * @hw:		handle between common and hardware-specific interfaces
+ * @map:	pointer to the regmap structure controlling the clock
+ * @data:	data specific to the clock type
+ *
+ * Clock which is controlled by regmap backed registers. The actual type of
+ * of the clock is controlled by the clock_ops and data.
+ */
+struct clk_regmap {
+	struct clk_hw	hw;
+	struct regmap	*map;
+	void		*data;
+};
+
+static inline struct clk_regmap *to_clk_regmap(struct clk_hw *hw)
+{
+	return container_of(hw, struct clk_regmap, hw);
+}
+
+/* clk_regmap init op to get and cache regmap from the controllers */
+int clk_regmap_init(struct clk_hw *hw);
+
+/**
+ * struct clk_regmap_gate_data - regmap backed gate specific data
+ *
+ * @offset:	offset of the register controlling gate
+ * @bit_idx:	single bit controlling gate
+ * @flags:	hardware-specific flags
+ *
+ * Flags:
+ * Same as clk_gate except CLK_GATE_HIWORD_MASK which is ignored
+ */
+struct clk_regmap_gate_data {
+	unsigned int	offset;
+	u8		bit_idx;
+	u8		flags;
+};
+
+static inline struct clk_regmap_gate_data *
+clk_get_regmap_gate_data(struct clk_regmap *clk)
+{
+	return (struct clk_regmap_gate_data *)clk->data;
+}
+
+extern const struct clk_ops clk_regmap_gate_ops;
+extern const struct clk_ops clk_regmap_gate_ro_ops;
+
+/**
+ * struct clk_regmap_div_data - regmap backed adjustable divider specific data
+ *
+ * @offset:	offset of the register controlling the divider
+ * @shift:	shift to the divider bit field
+ * @width:	width of the divider bit field
+ * @table:	array of value/divider pairs, last entry should have div = 0
+ *
+ * Flags:
+ * Same as clk_divider except CLK_DIVIDER_HIWORD_MASK which is ignored
+ */
+struct clk_regmap_div_data {
+	unsigned int	offset;
+	u8		shift;
+	u8		width;
+	u8		flags;
+	const struct clk_div_table	*table;
+};
+
+static inline struct clk_regmap_div_data *
+clk_get_regmap_div_data(struct clk_regmap *clk)
+{
+	return (struct clk_regmap_div_data *)clk->data;
+}
+
+extern const struct clk_ops clk_regmap_divider_ops;
+extern const struct clk_ops clk_regmap_divider_ro_ops;
+
+/**
+ * struct clk_regmap_mux_data - regmap backed multiplexer clock specific data
+ *
+ * @hw:		handle between common and hardware-specific interfaces
+ * @offset:	offset of theregister controlling multiplexer
+ * @table:	array of parent indexed register values
+ * @shift:	shift to multiplexer bit field
+ * @mask:	mask of mutliplexer bit field
+ * @flags:	hardware-specific flags
+ *
+ * Flags:
+ * Same as clk_divider except CLK_MUX_HIWORD_MASK which is ignored
+ */
+struct clk_regmap_mux_data {
+	unsigned int	offset;
+	u32		*table;
+	u32		mask;
+	u8		shift;
+	u8		flags;
+};
+
+static inline struct clk_regmap_mux_data *
+clk_get_regmap_mux_data(struct clk_regmap *clk)
+{
+	return (struct clk_regmap_mux_data *)clk->data;
+}
+
+extern const struct clk_ops clk_regmap_mux_ops;
+extern const struct clk_ops clk_regmap_mux_ro_ops;
+
+#endif /* __CLK_REGMAP_H */

linux-7.2.3/drivers/clk/meson/g12a-aoclk.c

@@ -0,0 +1,446 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Amlogic Meson-AXG Clock Controller Driver
+ *
+ * Copyright (c) 2016 Baylibre SAS.
+ * Author: Michael Turquette <mturquette@baylibre.com>
+ *
+ * Copyright (c) 2019 Baylibre SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include "meson-aoclk.h"
+
+#include "clk-regmap.h"
+#include "clk-dualdiv.h"
+
+#include <dt-bindings/clock/g12a-aoclkc.h>
+#include <dt-bindings/reset/g12a-aoclkc.h>
+
+/*
+ * AO Configuration Clock registers offsets
+ * Register offsets from the data sheet must be multiplied by 4.
+ */
+#define AO_RTI_STATUS_REG3	0x0C
+#define AO_RTI_PWR_CNTL_REG0	0x10
+#define AO_RTI_GEN_CNTL_REG0	0x40
+#define AO_CLK_GATE0		0x4c
+#define AO_CLK_GATE0_SP		0x50
+#define AO_OSCIN_CNTL		0x58
+#define AO_CEC_CLK_CNTL_REG0	0x74
+#define AO_CEC_CLK_CNTL_REG1	0x78
+#define AO_SAR_CLK		0x90
+#define AO_RTC_ALT_CLK_CNTL0	0x94
+#define AO_RTC_ALT_CLK_CNTL1	0x98
+
+static const struct clk_parent_data g12a_ao_pclk_parents = { .fw_name = "mpeg-clk" };
+
+#define G12A_AO_PCLK(_name, _reg, _bit, _flags) \
+	MESON_PCLK(g12a_ao_##_name, _reg, _bit, &g12a_ao_pclk_parents, _flags)
+
+/*
+ * NOTE: The gates below are marked with CLK_IGNORE_UNUSED for historic reasons
+ * Users are encouraged to test without it and submit changes to:
+ *  - remove the flag if not necessary
+ *  - replace the flag with something more adequate, such as CLK_IS_CRITICAL,
+ *    if appropriate.
+ *  - add a comment explaining why the use of CLK_IGNORE_UNUSED is desirable
+ *    for a particular clock.
+ */
+static G12A_AO_PCLK(ahb,	AO_CLK_GATE0,    0, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(ir_in,	AO_CLK_GATE0,    1, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(i2c_m0,	AO_CLK_GATE0,    2, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(i2c_s0,	AO_CLK_GATE0,    3, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(uart,	AO_CLK_GATE0,    4, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(prod_i2c,	AO_CLK_GATE0,    5, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(uart2,	AO_CLK_GATE0,    6, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(ir_out,	AO_CLK_GATE0,    7, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(saradc,	AO_CLK_GATE0,    8, CLK_IGNORE_UNUSED);
+
+static G12A_AO_PCLK(mailbox,	AO_CLK_GATE0_SP, 0, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(m3,		AO_CLK_GATE0_SP, 1, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(ahb_sram,	AO_CLK_GATE0_SP, 2, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(rti,	AO_CLK_GATE0_SP, 3, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(m4_fclk,	AO_CLK_GATE0_SP, 4, CLK_IGNORE_UNUSED);
+static G12A_AO_PCLK(m4_hclk,	AO_CLK_GATE0_SP, 5, CLK_IGNORE_UNUSED);
+
+static struct clk_regmap g12a_ao_cts_oscin = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.bit_idx = 14,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_oscin",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct meson_clk_dualdiv_param g12a_32k_div_table[] = {
+	{
+		.dual	= 1,
+		.n1	= 733,
+		.m1	= 8,
+		.n2	= 732,
+		.m2	= 11,
+	}, {}
+};
+
+/* 32k_by_oscin clock */
+
+static struct clk_regmap g12a_ao_32k_by_oscin_pre = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_by_oscin_pre",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_cts_oscin.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap g12a_ao_32k_by_oscin_div = {
+	.data = &(struct meson_clk_dualdiv_data){
+		.n1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.n2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.m1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.m2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.dual = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.table = g12a_32k_div_table,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_by_oscin_div",
+		.ops = &meson_clk_dualdiv_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_32k_by_oscin_pre.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap g12a_ao_32k_by_oscin_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTC_ALT_CLK_CNTL1,
+		.mask = 0x1,
+		.shift = 24,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_by_oscin_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_32k_by_oscin_div.hw,
+			&g12a_ao_32k_by_oscin_pre.hw,
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_32k_by_oscin = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 30,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_by_oscin",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_32k_by_oscin_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+/* cec clock */
+
+static struct clk_regmap g12a_ao_cec_pre = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_CEC_CLK_CNTL_REG0,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cec_pre",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_cts_oscin.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap g12a_ao_cec_div = {
+	.data = &(struct meson_clk_dualdiv_data){
+		.n1 = {
+			.reg_off = AO_CEC_CLK_CNTL_REG0,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.n2 = {
+			.reg_off = AO_CEC_CLK_CNTL_REG0,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.m1 = {
+			.reg_off = AO_CEC_CLK_CNTL_REG1,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.m2 = {
+			.reg_off = AO_CEC_CLK_CNTL_REG1,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.dual = {
+			.reg_off = AO_CEC_CLK_CNTL_REG0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.table = g12a_32k_div_table,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cec_div",
+		.ops = &meson_clk_dualdiv_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_cec_pre.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap g12a_ao_cec_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_CEC_CLK_CNTL_REG1,
+		.mask = 0x1,
+		.shift = 24,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cec_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_cec_div.hw,
+			&g12a_ao_cec_pre.hw,
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_cec = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_CEC_CLK_CNTL_REG0,
+		.bit_idx = 30,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cec",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_cec_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_cts_rtc_oscin = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 10,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cts_rtc_oscin",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .hw = &g12a_ao_32k_by_oscin.hw },
+			{ .fw_name = "ext-32k-0", },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_clk81 = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 8,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		/*
+		 * NOTE: this is one of the infamous clock the pwm driver
+		 * can request directly by its global name. It's wrong but
+		 * there is not much we can do about it until the support
+		 * for the old pwm bindings is dropped
+		 */
+		.name = "g12a_ao_clk81",
+		.ops = &clk_regmap_mux_ro_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "mpeg-clk", },
+			{ .hw = &g12a_ao_cts_rtc_oscin.hw },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_saradc_mux = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_SAR_CLK,
+		.mask = 0x3,
+		.shift = 9,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_mux",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", },
+			{ .hw = &g12a_ao_clk81.hw },
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_regmap g12a_ao_saradc_div = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = AO_SAR_CLK,
+		.shift = 0,
+		.width = 8,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_saradc_mux.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12a_ao_saradc_gate = {
+	.data = &(struct clk_regmap_gate_data) {
+		.offset = AO_SAR_CLK,
+		.bit_idx = 8,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_saradc_gate",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12a_ao_saradc_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const unsigned int g12a_ao_reset[] = {
+	[RESET_AO_IR_IN]	= 16,
+	[RESET_AO_UART]		= 17,
+	[RESET_AO_I2C_M]	= 18,
+	[RESET_AO_I2C_S]	= 19,
+	[RESET_AO_SAR_ADC]	= 20,
+	[RESET_AO_UART2]	= 22,
+	[RESET_AO_IR_OUT]	= 23,
+};
+
+static struct clk_hw *g12a_ao_hw_clks[] = {
+	[CLKID_AO_AHB]		= &g12a_ao_ahb.hw,
+	[CLKID_AO_IR_IN]	= &g12a_ao_ir_in.hw,
+	[CLKID_AO_I2C_M0]	= &g12a_ao_i2c_m0.hw,
+	[CLKID_AO_I2C_S0]	= &g12a_ao_i2c_s0.hw,
+	[CLKID_AO_UART]		= &g12a_ao_uart.hw,
+	[CLKID_AO_PROD_I2C]	= &g12a_ao_prod_i2c.hw,
+	[CLKID_AO_UART2]	= &g12a_ao_uart2.hw,
+	[CLKID_AO_IR_OUT]	= &g12a_ao_ir_out.hw,
+	[CLKID_AO_SAR_ADC]	= &g12a_ao_saradc.hw,
+	[CLKID_AO_MAILBOX]	= &g12a_ao_mailbox.hw,
+	[CLKID_AO_M3]		= &g12a_ao_m3.hw,
+	[CLKID_AO_AHB_SRAM]	= &g12a_ao_ahb_sram.hw,
+	[CLKID_AO_RTI]		= &g12a_ao_rti.hw,
+	[CLKID_AO_M4_FCLK]	= &g12a_ao_m4_fclk.hw,
+	[CLKID_AO_M4_HCLK]	= &g12a_ao_m4_hclk.hw,
+	[CLKID_AO_CLK81]	= &g12a_ao_clk81.hw,
+	[CLKID_AO_SAR_ADC_SEL]	= &g12a_ao_saradc_mux.hw,
+	[CLKID_AO_SAR_ADC_DIV]	= &g12a_ao_saradc_div.hw,
+	[CLKID_AO_SAR_ADC_CLK]	= &g12a_ao_saradc_gate.hw,
+	[CLKID_AO_CTS_OSCIN]	= &g12a_ao_cts_oscin.hw,
+	[CLKID_AO_32K_PRE]	= &g12a_ao_32k_by_oscin_pre.hw,
+	[CLKID_AO_32K_DIV]	= &g12a_ao_32k_by_oscin_div.hw,
+	[CLKID_AO_32K_SEL]	= &g12a_ao_32k_by_oscin_sel.hw,
+	[CLKID_AO_32K]		= &g12a_ao_32k_by_oscin.hw,
+	[CLKID_AO_CEC_PRE]	= &g12a_ao_cec_pre.hw,
+	[CLKID_AO_CEC_DIV]	= &g12a_ao_cec_div.hw,
+	[CLKID_AO_CEC_SEL]	= &g12a_ao_cec_sel.hw,
+	[CLKID_AO_CEC]		= &g12a_ao_cec.hw,
+	[CLKID_AO_CTS_RTC_OSCIN] = &g12a_ao_cts_rtc_oscin.hw,
+};
+
+static const struct meson_aoclk_data g12a_ao_clkc_data = {
+	.reset_reg	= AO_RTI_GEN_CNTL_REG0,
+	.num_reset	= ARRAY_SIZE(g12a_ao_reset),
+	.reset		= g12a_ao_reset,
+	.clkc_data = {
+		.hw_clks = {
+			.hws	= g12a_ao_hw_clks,
+			.num	= ARRAY_SIZE(g12a_ao_hw_clks),
+		},
+	},
+};
+
+static const struct of_device_id g12a_ao_clkc_match_table[] = {
+	{
+		.compatible	= "amlogic,meson-g12a-aoclkc",
+		.data		= &g12a_ao_clkc_data.clkc_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, g12a_ao_clkc_match_table);
+
+static struct platform_driver g12a_ao_clkc_driver = {
+	.probe		= meson_aoclkc_probe,
+	.driver		= {
+		.name	= "g12a-aoclkc",
+		.of_match_table = g12a_ao_clkc_match_table,
+	},
+};
+module_platform_driver(g12a_ao_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic G12A Always-ON Clock Controller driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/gxbb-aoclk.c

@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright (c) 2016 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+#include <linux/platform_device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include "meson-aoclk.h"
+
+#include "clk-regmap.h"
+#include "clk-dualdiv.h"
+
+#include <dt-bindings/clock/gxbb-aoclkc.h>
+#include <dt-bindings/reset/gxbb-aoclkc.h>
+
+/* AO Configuration Clock registers offsets */
+#define AO_RTI_PWR_CNTL_REG1	0x0c
+#define AO_RTI_PWR_CNTL_REG0	0x10
+#define AO_RTI_GEN_CNTL_REG0	0x40
+#define AO_OSCIN_CNTL		0x58
+#define AO_CRT_CLK_CNTL1	0x68
+#define AO_RTC_ALT_CLK_CNTL0	0x94
+#define AO_RTC_ALT_CLK_CNTL1	0x98
+
+static const struct clk_parent_data gxbb_ao_pclk_parents = { .fw_name = "mpeg-clk" };
+
+#define GXBB_AO_PCLK(_name, _bit, _flags)			\
+	MESON_PCLK(gxbb_ao_##_name, AO_RTI_GEN_CNTL_REG0, _bit, \
+		   &gxbb_ao_pclk_parents, _flags)
+
+static GXBB_AO_PCLK(remote,	0, CLK_IGNORE_UNUSED);
+static GXBB_AO_PCLK(i2c_master,	1, CLK_IGNORE_UNUSED);
+static GXBB_AO_PCLK(i2c_slave,	2, CLK_IGNORE_UNUSED);
+static GXBB_AO_PCLK(uart1,	3, CLK_IGNORE_UNUSED);
+static GXBB_AO_PCLK(uart2,	5, CLK_IGNORE_UNUSED);
+static GXBB_AO_PCLK(ir_blaster,	6, CLK_IGNORE_UNUSED);
+
+static struct clk_regmap gxbb_ao_cts_oscin = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.bit_idx = 6,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cts_oscin",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap gxbb_ao_32k_pre = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_pre",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &gxbb_ao_cts_oscin.hw },
+		.num_parents = 1,
+	},
+};
+
+static const struct meson_clk_dualdiv_param gxbb_32k_div_table[] = {
+	{
+		.dual	= 1,
+		.n1	= 733,
+		.m1	= 8,
+		.n2	= 732,
+		.m2	= 11,
+	}, {}
+};
+
+static struct clk_regmap gxbb_ao_32k_div = {
+	.data = &(struct meson_clk_dualdiv_data){
+		.n1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.n2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.m1 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 0,
+			.width   = 12,
+		},
+		.m2 = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL1,
+			.shift   = 12,
+			.width   = 12,
+		},
+		.dual = {
+			.reg_off = AO_RTC_ALT_CLK_CNTL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.table = gxbb_32k_div_table,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_div",
+		.ops = &meson_clk_dualdiv_ops,
+		.parent_hws = (const struct clk_hw *[]) { &gxbb_ao_32k_pre.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap gxbb_ao_32k_sel = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTC_ALT_CLK_CNTL1,
+		.mask = 0x1,
+		.shift = 24,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&gxbb_ao_32k_div.hw,
+			&gxbb_ao_32k_pre.hw
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap gxbb_ao_32k = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = AO_RTC_ALT_CLK_CNTL0,
+		.bit_idx = 30,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_32k",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &gxbb_ao_32k_sel.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap gxbb_ao_cts_rtc_oscin = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x7,
+		.shift = 10,
+		.table = (u32[]){ 1, 2, 3, 4 },
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cts_rtc_oscin",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "ext-32k-0", },
+			{ .fw_name = "ext-32k-1", },
+			{ .fw_name = "ext-32k-2", },
+			{ .hw = &gxbb_ao_32k.hw },
+		},
+		.num_parents = 4,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap gxbb_ao_clk81 = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_RTI_PWR_CNTL_REG0,
+		.mask = 0x1,
+		.shift = 0,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_clk81",
+		.ops = &clk_regmap_mux_ro_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "mpeg-clk", },
+			{ .hw = &gxbb_ao_cts_rtc_oscin.hw },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap gxbb_ao_cts_cec = {
+	.data = &(struct clk_regmap_mux_data) {
+		.offset = AO_CRT_CLK_CNTL1,
+		.mask = 0x1,
+		.shift = 27,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ao_cts_cec",
+		.ops = &clk_regmap_mux_ops,
+		/*
+		 * FIXME: The 'fixme' parent obviously does not exist.
+		 *
+		 * ATM, CCF won't call get_parent() if num_parents is 1. It
+		 * does not allow NULL as a parent name either.
+		 *
+		 * On this particular mux, we only know the input #1 parent
+		 * but, on boot, unknown input #0 is set, so it is critical
+		 * to call .get_parent() on it
+		 *
+		 * Until CCF gets fixed, adding this fake parent that won't
+		 * ever be registered should work around the problem
+		 */
+		.parent_data = (const struct clk_parent_data []) {
+			{ .name = "fixme", .index = -1, },
+			{ .hw = &gxbb_ao_cts_rtc_oscin.hw },
+		},
+		.num_parents = 2,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const unsigned int gxbb_ao_reset[] = {
+	[RESET_AO_REMOTE] = 16,
+	[RESET_AO_I2C_MASTER] = 18,
+	[RESET_AO_I2C_SLAVE] = 19,
+	[RESET_AO_UART1] = 17,
+	[RESET_AO_UART2] = 22,
+	[RESET_AO_IR_BLASTER] = 23,
+};
+
+static struct clk_hw *gxbb_ao_hw_clks[] = {
+		[CLKID_AO_REMOTE]	= &gxbb_ao_remote.hw,
+		[CLKID_AO_I2C_MASTER]	= &gxbb_ao_i2c_master.hw,
+		[CLKID_AO_I2C_SLAVE]	= &gxbb_ao_i2c_slave.hw,
+		[CLKID_AO_UART1]	= &gxbb_ao_uart1.hw,
+		[CLKID_AO_UART2]	= &gxbb_ao_uart2.hw,
+		[CLKID_AO_IR_BLASTER]	= &gxbb_ao_ir_blaster.hw,
+		[CLKID_AO_CEC_32K]	= &gxbb_ao_cts_cec.hw,
+		[CLKID_AO_CTS_OSCIN]	= &gxbb_ao_cts_oscin.hw,
+		[CLKID_AO_32K_PRE]	= &gxbb_ao_32k_pre.hw,
+		[CLKID_AO_32K_DIV]	= &gxbb_ao_32k_div.hw,
+		[CLKID_AO_32K_SEL]	= &gxbb_ao_32k_sel.hw,
+		[CLKID_AO_32K]		= &gxbb_ao_32k.hw,
+		[CLKID_AO_CTS_RTC_OSCIN] = &gxbb_ao_cts_rtc_oscin.hw,
+		[CLKID_AO_CLK81]	= &gxbb_ao_clk81.hw,
+};
+
+static const struct meson_aoclk_data gxbb_ao_clkc_data = {
+	.reset_reg	= AO_RTI_GEN_CNTL_REG0,
+	.num_reset	= ARRAY_SIZE(gxbb_ao_reset),
+	.reset		= gxbb_ao_reset,
+	.clkc_data	= {
+		.hw_clks = {
+			.hws	= gxbb_ao_hw_clks,
+			.num	= ARRAY_SIZE(gxbb_ao_hw_clks),
+		},
+	},
+};
+
+static const struct of_device_id gxbb_ao_clkc_match_table[] = {
+	{
+		.compatible	= "amlogic,meson-gx-aoclkc",
+		.data		= &gxbb_ao_clkc_data.clkc_data,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, gxbb_ao_clkc_match_table);
+
+static struct platform_driver gxbb_ao_clkc_driver = {
+	.probe		= meson_aoclkc_probe,
+	.driver		= {
+		.name	= "gxbb-aoclkc",
+		.of_match_table = gxbb_ao_clkc_match_table,
+	},
+};
+module_platform_driver(gxbb_ao_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic GXBB Always-ON Clock Controller driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/meson-aoclk.c

@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Amlogic Meson-AXG Clock Controller Driver
+ *
+ * Copyright (c) 2016 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ *
+ * Copyright (c) 2018 Amlogic, inc.
+ * Author: Qiufang Dai <qiufang.dai@amlogic.com>
+ * Author: Yixun Lan <yixun.lan@amlogic.com>
+ */
+
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/module.h>
+
+#include <linux/slab.h>
+#include "meson-aoclk.h"
+#include "clk-regmap.h"
+
+static int meson_aoclk_do_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct meson_aoclk_reset_controller *rstc =
+		container_of(rcdev, struct meson_aoclk_reset_controller, reset);
+
+	return regmap_write(rstc->regmap, rstc->data->reset_reg,
+			    BIT(rstc->data->reset[id]));
+}
+
+static const struct reset_control_ops meson_aoclk_reset_ops = {
+	.reset = meson_aoclk_do_reset,
+};
+
+int meson_aoclkc_probe(struct platform_device *pdev)
+{
+	struct meson_aoclk_reset_controller *rstc;
+	const struct meson_clkc_data *clkc_data;
+	const struct meson_aoclk_data *data;
+	struct device *dev = &pdev->dev;
+	struct device_node *np;
+	struct regmap *regmap;
+	int ret;
+
+	clkc_data = of_device_get_match_data(dev);
+	if (!clkc_data)
+		return -EINVAL;
+
+	ret = meson_clkc_syscon_probe(pdev);
+	if (ret)
+		return ret;
+
+	data = container_of(clkc_data, struct meson_aoclk_data,
+			    clkc_data);
+
+	rstc = devm_kzalloc(dev, sizeof(*rstc), GFP_KERNEL);
+	if (!rstc)
+		return -ENOMEM;
+
+	np = of_get_parent(dev->of_node);
+	regmap = syscon_node_to_regmap(np);
+	of_node_put(np);
+	if (IS_ERR(regmap)) {
+		dev_err(dev, "failed to get regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	/* Reset Controller */
+	rstc->data = data;
+	rstc->regmap = regmap;
+	rstc->reset.ops = &meson_aoclk_reset_ops;
+	rstc->reset.nr_resets = data->num_reset;
+	rstc->reset.of_node = dev->of_node;
+	ret = devm_reset_controller_register(dev, &rstc->reset);
+	if (ret) {
+		dev_err(dev, "failed to register reset controller\n");
+		return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(meson_aoclkc_probe, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic Always-ON Clock Controller helpers");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/meson-aoclk.h

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2017 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ *
+ * Copyright (c) 2018 Amlogic, inc.
+ * Author: Qiufang Dai <qiufang.dai@amlogic.com>
+ * Author: Yixun Lan <yixun.lan@amlogic.com>
+ */
+
+#ifndef __MESON_AOCLK_H__
+#define __MESON_AOCLK_H__
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+
+#include "clk-regmap.h"
+#include "meson-clkc-utils.h"
+
+struct meson_aoclk_data {
+	const struct meson_clkc_data		clkc_data;
+	const unsigned int			reset_reg;
+	const int				num_reset;
+	const unsigned int			*reset;
+};
+
+struct meson_aoclk_reset_controller {
+	struct reset_controller_dev		reset;
+	const struct meson_aoclk_data		*data;
+	struct regmap				*regmap;
+};
+
+int meson_aoclkc_probe(struct platform_device *pdev);
+#endif

linux-7.2.3/drivers/clk/meson/meson-clkc-utils.c

@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023 Neil Armstrong <neil.armstrong@linaro.org>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include "meson-clkc-utils.h"
+
+struct clk_hw *meson_clk_hw_get(struct of_phandle_args *clkspec, void *clk_hw_data)
+{
+	const struct meson_clk_hw_data *data = clk_hw_data;
+	unsigned int idx = clkspec->args[0];
+
+	if (idx >= data->num) {
+		pr_err("%s: invalid index %u\n", __func__, idx);
+		return ERR_PTR(-EINVAL);
+	}
+
+	return data->hws[idx];
+}
+EXPORT_SYMBOL_NS_GPL(meson_clk_hw_get, "CLK_MESON");
+
+static int meson_clkc_init(struct device *dev, struct regmap *map)
+{
+	const struct meson_clkc_data *data;
+	struct clk_hw *hw;
+	int ret, i;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	if (data->init_count)
+		regmap_multi_reg_write(map, data->init_regs, data->init_count);
+
+	for (i = 0; i < data->hw_clks.num; i++) {
+		hw = data->hw_clks.hws[i];
+
+		/* array might be sparse */
+		if (!hw)
+			continue;
+
+		ret = devm_clk_hw_register(dev, hw);
+		if (ret) {
+			dev_err(dev, "registering %s clock failed\n",
+				hw->init->name);
+			return ret;
+		}
+	}
+
+	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, (void *)&data->hw_clks);
+}
+
+int meson_clkc_syscon_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np;
+	struct regmap *map;
+
+	np = of_get_parent(dev->of_node);
+	map = syscon_node_to_regmap(np);
+	of_node_put(np);
+	if (IS_ERR(map)) {
+		dev_err(dev, "failed to get parent syscon regmap\n");
+		return PTR_ERR(map);
+	}
+
+	return meson_clkc_init(dev, map);
+}
+EXPORT_SYMBOL_NS_GPL(meson_clkc_syscon_probe, "CLK_MESON");
+
+int meson_clkc_mmio_probe(struct platform_device *pdev)
+{
+	const struct meson_clkc_data *data;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	void __iomem *base;
+	struct regmap *map;
+	struct regmap_config regmap_cfg = {
+			.reg_bits	= 32,
+			.val_bits	= 32,
+			.reg_stride	= 4,
+	};
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	regmap_cfg.max_register = resource_size(res) - regmap_cfg.reg_stride;
+
+	map = devm_regmap_init_mmio(dev, base, &regmap_cfg);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	return meson_clkc_init(dev, map);
+}
+EXPORT_SYMBOL_NS_GPL(meson_clkc_mmio_probe, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic Clock Controller Utilities");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/meson-clkc-utils.h

@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2023 Neil Armstrong <neil.armstrong@linaro.org>
+ */
+
+#ifndef __MESON_CLKC_UTILS_H__
+#define __MESON_CLKC_UTILS_H__
+
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+
+struct platform_device;
+
+struct meson_clk_hw_data {
+	struct clk_hw	**hws;
+	unsigned int	num;
+};
+
+struct clk_hw *meson_clk_hw_get(struct of_phandle_args *clkspec, void *clk_hw_data);
+
+struct meson_clkc_data {
+	const struct reg_sequence	*init_regs;
+	unsigned int			init_count;
+	struct meson_clk_hw_data	hw_clks;
+};
+
+int meson_clkc_syscon_probe(struct platform_device *pdev);
+int meson_clkc_mmio_probe(struct platform_device *pdev);
+
+#define __MESON_PCLK(_name, _reg, _bit, _ops, _pdata, _flags)		\
+struct clk_regmap _name = {						\
+	.data = &(struct clk_regmap_gate_data) {			\
+		.offset = (_reg),					\
+		.bit_idx = (_bit),					\
+	},								\
+	.hw.init = &(struct clk_init_data) {				\
+		.name = #_name,						\
+		.ops = _ops,						\
+		.parent_data = (_pdata),				\
+		.num_parents = 1,					\
+		.flags = (_flags),					\
+	},								\
+}
+
+#define MESON_PCLK(_name, _reg, _bit, _pdata, _flags)			\
+	__MESON_PCLK(_name, _reg, _bit, &clk_regmap_gate_ops, _pdata, _flags)
+
+#define MESON_PCLK_RO(_name, _reg, _bit, _pdata, _flags)		\
+	__MESON_PCLK(_name, _reg, _bit, &clk_regmap_gate_ro_ops, _pdata, _flags)
+
+/* Helpers for the usual sel/div/gate composite clocks */
+#define MESON_COMP_SEL(_prefix, _name, _reg, _shift, _mask, _pdata,	\
+		       _table, _dflags, _iflags)			\
+struct clk_regmap _prefix##_name##_sel = {				\
+	.data = &(struct clk_regmap_mux_data) {				\
+		.offset = (_reg),					\
+		.mask = (_mask),					\
+		.shift = (_shift),					\
+		.flags = (_dflags),					\
+		.table = (_table),					\
+	},								\
+	.hw.init = &(struct clk_init_data){				\
+		.name = #_name "_sel",					\
+		.ops = &clk_regmap_mux_ops,				\
+		.parent_data = _pdata,					\
+		.num_parents = ARRAY_SIZE(_pdata),			\
+		.flags = (_iflags),					\
+	},								\
+}
+
+#define MESON_COMP_DIV(_prefix, _name, _reg, _shift, _width,		\
+		       _dflags, _iflags)				\
+struct clk_regmap _prefix##_name##_div = {				\
+	.data = &(struct clk_regmap_div_data) {				\
+		.offset = (_reg),					\
+		.shift = (_shift),					\
+		.width = (_width),					\
+		.flags = (_dflags),					\
+	},								\
+	.hw.init = &(struct clk_init_data) {				\
+		.name = #_name "_div",					\
+		.ops = &clk_regmap_divider_ops,				\
+		.parent_hws = (const struct clk_hw *[]) {		\
+			&_prefix##_name##_sel.hw			\
+		},							\
+		.num_parents = 1,					\
+		.flags = (_iflags),					\
+	},								\
+}
+
+#define MESON_COMP_GATE(_prefix, _name, _reg, _bit, _iflags)		\
+struct clk_regmap _prefix##_name = {					\
+	.data = &(struct clk_regmap_gate_data) {			\
+		.offset = (_reg),					\
+		.bit_idx = (_bit),					\
+	},								\
+	.hw.init = &(struct clk_init_data) {				\
+		.name = #_name,						\
+		.ops = &clk_regmap_gate_ops,				\
+		.parent_hws = (const struct clk_hw *[]) {		\
+			&_prefix##_name##_div.hw			\
+		},							\
+		.num_parents = 1,					\
+		.flags = (_iflags),					\
+	},								\
+}
+
+#endif

linux-7.2.3/drivers/clk/meson/meson8-ddr.c

@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Amlogic Meson8 DDR clock controller
+ *
+ * Copyright (C) 2019 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+ */
+
+#include <dt-bindings/clock/meson8-ddr-clkc.h>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "meson-clkc-utils.h"
+
+#define AM_DDR_PLL_CNTL			0x00
+#define AM_DDR_PLL_CNTL1		0x04
+#define AM_DDR_PLL_CNTL2		0x08
+#define AM_DDR_PLL_CNTL3		0x0c
+#define AM_DDR_PLL_CNTL4		0x10
+#define AM_DDR_PLL_STS			0x14
+#define DDR_CLK_CNTL			0x18
+#define DDR_CLK_STS			0x1c
+
+static struct clk_regmap meson8_ddr_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = AM_DDR_PLL_CNTL,
+			.shift   = 30,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = AM_DDR_PLL_CNTL,
+			.shift   = 0,
+			.width   = 9,
+		},
+		.n = {
+			.reg_off = AM_DDR_PLL_CNTL,
+			.shift   = 9,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = AM_DDR_PLL_CNTL,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = AM_DDR_PLL_CNTL,
+			.shift   = 29,
+			.width   = 1,
+		},
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ddr_pll_dco",
+		.ops = &meson_clk_pll_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap meson8_ddr_pll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = AM_DDR_PLL_CNTL,
+		.shift = 16,
+		.width = 2,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "ddr_pll",
+		.ops = &clk_regmap_divider_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&meson8_ddr_pll_dco.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_hw *meson8_ddr_hw_clks[] = {
+	[DDR_CLKID_DDR_PLL_DCO]		= &meson8_ddr_pll_dco.hw,
+	[DDR_CLKID_DDR_PLL]		= &meson8_ddr_pll.hw,
+};
+
+static const struct meson_clkc_data meson8_ddr_clkc_data = {
+	.hw_clks = {
+		.hws = meson8_ddr_hw_clks,
+		.num = ARRAY_SIZE(meson8_ddr_hw_clks),
+	},
+};
+
+static const struct of_device_id meson8_ddr_clkc_match_table[] = {
+	{
+		.compatible = "amlogic,meson8-ddr-clkc",
+		.data = &meson8_ddr_clkc_data,
+	}, {
+		.compatible = "amlogic,meson8b-ddr-clkc",
+		.data = &meson8_ddr_clkc_data,
+	},
+	{ /* sentinel */ }
+};
+
+static struct platform_driver meson8_ddr_clkc_driver = {
+	.probe		= meson_clkc_mmio_probe,
+	.driver		= {
+		.name	= "meson8-ddr-clkc",
+		.of_match_table = meson8_ddr_clkc_match_table,
+	},
+};
+
+builtin_platform_driver(meson8_ddr_clkc_driver);

linux-7.2.3/drivers/clk/meson/parm.h

@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2015 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ */
+
+#ifndef __MESON_PARM_H
+#define __MESON_PARM_H
+
+#include <linux/bits.h>
+#include <linux/regmap.h>
+
+#define PMASK(width)			GENMASK(width - 1, 0)
+#define SETPMASK(width, shift)		GENMASK(shift + width - 1, shift)
+#define CLRPMASK(width, shift)		(~SETPMASK(width, shift))
+
+#define PARM_GET(width, shift, reg)					\
+	(((reg) & SETPMASK(width, shift)) >> (shift))
+#define PARM_SET(width, shift, reg, val)				\
+	(((reg) & CLRPMASK(width, shift)) | ((val) << (shift)))
+
+#define MESON_PARM_APPLICABLE(p)		(!!((p)->width))
+
+struct parm {
+	u16	reg_off;
+	u8	shift;
+	u8	width;
+};
+
+static inline unsigned int meson_parm_read(struct regmap *map, struct parm *p)
+{
+	unsigned int val;
+
+	regmap_read(map, p->reg_off, &val);
+	return PARM_GET(p->width, p->shift, val);
+}
+
+static inline void meson_parm_write(struct regmap *map, struct parm *p,
+				    unsigned int val)
+{
+	regmap_update_bits(map, p->reg_off, SETPMASK(p->width, p->shift),
+			   val << p->shift);
+}
+
+#endif /* __MESON_PARM_H */
+

linux-7.2.3/drivers/clk/meson/s4-pll.c

@@ -0,0 +1,831 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
+/*
+ * Amlogic S4 PLL Clock Controller Driver
+ *
+ * Copyright (c) 2022-2023 Amlogic, inc. All rights reserved
+ * Author: Yu Tu <yu.tu@amlogic.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mpll.h"
+#include "clk-pll.h"
+#include "clk-regmap.h"
+#include "meson-clkc-utils.h"
+#include <dt-bindings/clock/amlogic,s4-pll-clkc.h>
+
+#define ANACTRL_FIXPLL_CTRL0                       0x040
+#define ANACTRL_FIXPLL_CTRL1                       0x044
+#define ANACTRL_FIXPLL_CTRL3                       0x04c
+#define ANACTRL_GP0PLL_CTRL0                       0x080
+#define ANACTRL_GP0PLL_CTRL1                       0x084
+#define ANACTRL_GP0PLL_CTRL2                       0x088
+#define ANACTRL_GP0PLL_CTRL3                       0x08c
+#define ANACTRL_GP0PLL_CTRL4                       0x090
+#define ANACTRL_GP0PLL_CTRL5                       0x094
+#define ANACTRL_GP0PLL_CTRL6                       0x098
+#define ANACTRL_HIFIPLL_CTRL0                      0x100
+#define ANACTRL_HIFIPLL_CTRL1                      0x104
+#define ANACTRL_HIFIPLL_CTRL2                      0x108
+#define ANACTRL_HIFIPLL_CTRL3                      0x10c
+#define ANACTRL_HIFIPLL_CTRL4                      0x110
+#define ANACTRL_HIFIPLL_CTRL5                      0x114
+#define ANACTRL_HIFIPLL_CTRL6                      0x118
+#define ANACTRL_MPLL_CTRL0                         0x180
+#define ANACTRL_MPLL_CTRL1                         0x184
+#define ANACTRL_MPLL_CTRL2                         0x188
+#define ANACTRL_MPLL_CTRL3                         0x18c
+#define ANACTRL_MPLL_CTRL4                         0x190
+#define ANACTRL_MPLL_CTRL5                         0x194
+#define ANACTRL_MPLL_CTRL6                         0x198
+#define ANACTRL_MPLL_CTRL7                         0x19c
+#define ANACTRL_MPLL_CTRL8                         0x1a0
+#define ANACTRL_HDMIPLL_CTRL0                      0x1c0
+
+/*
+ * These clock are a fixed value (fixed_pll is 2GHz) that is initialized by ROMcode.
+ * The chip was changed fixed pll for security reasons. Fixed PLL registers are not writable
+ * in the kernel phase. Write of fixed PLL-related register will cause the system to crash.
+ * Meanwhile, these clock won't ever change at runtime.
+ * For the above reasons, we can only use ro_ops for fixed PLL related clocks.
+ */
+static struct clk_regmap s4_fixed_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.frac = {
+			.reg_off = ANACTRL_FIXPLL_CTRL1,
+			.shift   = 0,
+			.width   = 17,
+		},
+		.n = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_FIXPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fixed_pll_dco",
+		.ops = &meson_clk_pll_ro_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", }
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fixed_pll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = ANACTRL_FIXPLL_CTRL0,
+		.shift = 16,
+		.width = 2,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fixed_pll",
+		.ops = &clk_regmap_divider_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fixed_pll_dco.hw
+		},
+		.num_parents = 1,
+		/*
+		 * This clock won't ever change at runtime so
+		 * CLK_SET_RATE_PARENT is not required
+		 */
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div2_div = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_fixed_pll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div2 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 24,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div2_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div3_div = {
+	.mult = 1,
+	.div = 3,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div3_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_fixed_pll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div3 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 20,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div3",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div3_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div4_div = {
+	.mult = 1,
+	.div = 4,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div4_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_fixed_pll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div4 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 21,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div4",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div4_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div5_div = {
+	.mult = 1,
+	.div = 5,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_fixed_pll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div5 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 22,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div5",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div5_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div7_div = {
+	.mult = 1,
+	.div = 7,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div7_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_fixed_pll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div7 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 23,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div7",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div7_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor s4_fclk_div2p5_div = {
+	.mult = 2,
+	.div = 5,
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2p5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fixed_pll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_fclk_div2p5 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_FIXPLL_CTRL1,
+		.bit_idx = 25,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fclk_div2p5",
+		.ops = &clk_regmap_gate_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fclk_div2p5_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct pll_mult_range s4_gp0_pll_mult_range = {
+	.min = 125,
+	.max = 250,
+};
+
+/*
+ * Internal gp0 pll emulation configuration parameters
+ */
+static const struct reg_sequence s4_gp0_pll_init_regs[] = {
+	{ .reg = ANACTRL_GP0PLL_CTRL1,	.def = 0x00000000 },
+	{ .reg = ANACTRL_GP0PLL_CTRL2,	.def = 0x00000000 },
+	{ .reg = ANACTRL_GP0PLL_CTRL3,	.def = 0x48681c00 },
+	{ .reg = ANACTRL_GP0PLL_CTRL4,	.def = 0x88770290 },
+	{ .reg = ANACTRL_GP0PLL_CTRL5,	.def = 0x39272000 },
+	{ .reg = ANACTRL_GP0PLL_CTRL6,	.def = 0x56540000 }
+};
+
+static struct clk_regmap s4_gp0_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_GP0PLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &s4_gp0_pll_mult_range,
+		.init_regs = s4_gp0_pll_init_regs,
+		.init_count = ARRAY_SIZE(s4_gp0_pll_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "gp0_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", }
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_gp0_pll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = ANACTRL_GP0PLL_CTRL0,
+		.shift = 16,
+		.width = 3,
+		.flags = (CLK_DIVIDER_POWER_OF_TWO |
+			  CLK_DIVIDER_ROUND_CLOSEST),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "gp0_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_gp0_pll_dco.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+/*
+ * Internal hifi pll emulation configuration parameters
+ */
+static const struct reg_sequence s4_hifi_pll_init_regs[] = {
+	{ .reg = ANACTRL_HIFIPLL_CTRL2,	.def = 0x00000000 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL3,	.def = 0x6a285c00 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL4,	.def = 0x65771290 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL5,	.def = 0x39272000 },
+	{ .reg = ANACTRL_HIFIPLL_CTRL6,	.def = 0x56540000 }
+};
+
+static struct clk_regmap s4_hifi_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.frac = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL1,
+			.shift   = 0,
+			.width   = 17,
+		},
+		.l = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_HIFIPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &s4_gp0_pll_mult_range,
+		.init_regs = s4_hifi_pll_init_regs,
+		.init_count = ARRAY_SIZE(s4_hifi_pll_init_regs),
+		.frac_max = 100000,
+		.flags = CLK_MESON_PLL_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hifi_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", }
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_hifi_pll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = ANACTRL_HIFIPLL_CTRL0,
+		.shift = 16,
+		.width = 2,
+		.flags = (CLK_DIVIDER_POWER_OF_TWO |
+			  CLK_DIVIDER_ROUND_CLOSEST),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hifi_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_hifi_pll_dco.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap s4_hdmi_pll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = ANACTRL_HDMIPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = ANACTRL_HDMIPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = ANACTRL_HDMIPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.l = {
+			.reg_off = ANACTRL_HDMIPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = ANACTRL_HDMIPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+		.range = &s4_gp0_pll_mult_range,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hdmi_pll_dco",
+		.ops = &meson_clk_pll_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", }
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_hdmi_pll_od = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = ANACTRL_HDMIPLL_CTRL0,
+		.shift = 16,
+		.width = 4,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hdmi_pll_od",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_hdmi_pll_dco.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap s4_hdmi_pll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = ANACTRL_HDMIPLL_CTRL0,
+		.shift = 20,
+		.width = 2,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "hdmi_pll",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_hdmi_pll_od.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_fixed_factor s4_mpll_50m_div = {
+	.mult = 1,
+	.div = 80,
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll_50m_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fixed_pll_dco.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_mpll_50m = {
+	.data = &(struct clk_regmap_mux_data){
+		.offset = ANACTRL_FIXPLL_CTRL3,
+		.mask = 0x1,
+		.shift = 5,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll_50m",
+		.ops = &clk_regmap_mux_ro_ops,
+		.parent_data = (const struct clk_parent_data []) {
+			{ .fw_name = "xtal", },
+			{ .hw = &s4_mpll_50m_div.hw },
+		},
+		.num_parents = 2,
+	},
+};
+
+static struct clk_fixed_factor s4_mpll_prediv = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll_prediv",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_fixed_pll_dco.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static const struct reg_sequence s4_mpll0_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL2, .def = 0x40000033 }
+};
+
+static struct clk_regmap s4_mpll0_div = {
+	.data = &(struct meson_clk_mpll_data){
+		.sdm = {
+			.reg_off = ANACTRL_MPLL_CTRL1,
+			.shift   = 0,
+			.width   = 14,
+		},
+		.sdm_en = {
+			.reg_off = ANACTRL_MPLL_CTRL1,
+			.shift   = 30,
+			.width	 = 1,
+		},
+		.n2 = {
+			.reg_off = ANACTRL_MPLL_CTRL1,
+			.shift   = 20,
+			.width   = 9,
+		},
+		.ssen = {
+			.reg_off = ANACTRL_MPLL_CTRL1,
+			.shift   = 29,
+			.width	 = 1,
+		},
+		.init_regs = s4_mpll0_init_regs,
+		.init_count = ARRAY_SIZE(s4_mpll0_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll0_div",
+		.ops = &meson_clk_mpll_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_mpll_prediv.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_mpll0 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_MPLL_CTRL1,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll0",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_mpll0_div.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct reg_sequence s4_mpll1_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL4,	.def = 0x40000033 }
+};
+
+static struct clk_regmap s4_mpll1_div = {
+	.data = &(struct meson_clk_mpll_data){
+		.sdm = {
+			.reg_off = ANACTRL_MPLL_CTRL3,
+			.shift   = 0,
+			.width   = 14,
+		},
+		.sdm_en = {
+			.reg_off = ANACTRL_MPLL_CTRL3,
+			.shift   = 30,
+			.width	 = 1,
+		},
+		.n2 = {
+			.reg_off = ANACTRL_MPLL_CTRL3,
+			.shift   = 20,
+			.width   = 9,
+		},
+		.ssen = {
+			.reg_off = ANACTRL_MPLL_CTRL3,
+			.shift   = 29,
+			.width	 = 1,
+		},
+		.init_regs = s4_mpll1_init_regs,
+		.init_count = ARRAY_SIZE(s4_mpll1_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll1_div",
+		.ops = &meson_clk_mpll_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_mpll_prediv.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_mpll1 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_MPLL_CTRL3,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll1",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_mpll1_div.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct reg_sequence s4_mpll2_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL6, .def = 0x40000033 }
+};
+
+static struct clk_regmap s4_mpll2_div = {
+	.data = &(struct meson_clk_mpll_data){
+		.sdm = {
+			.reg_off = ANACTRL_MPLL_CTRL5,
+			.shift   = 0,
+			.width   = 14,
+		},
+		.sdm_en = {
+			.reg_off = ANACTRL_MPLL_CTRL5,
+			.shift   = 30,
+			.width	 = 1,
+		},
+		.n2 = {
+			.reg_off = ANACTRL_MPLL_CTRL5,
+			.shift   = 20,
+			.width   = 9,
+		},
+		.ssen = {
+			.reg_off = ANACTRL_MPLL_CTRL5,
+			.shift   = 29,
+			.width	 = 1,
+		},
+		.init_regs = s4_mpll2_init_regs,
+		.init_count = ARRAY_SIZE(s4_mpll2_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll2_div",
+		.ops = &meson_clk_mpll_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_mpll_prediv.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_mpll2 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_MPLL_CTRL5,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll2",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_mpll2_div.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static const struct reg_sequence s4_mpll3_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL8, .def = 0x40000033 }
+};
+
+static struct clk_regmap s4_mpll3_div = {
+	.data = &(struct meson_clk_mpll_data){
+		.sdm = {
+			.reg_off = ANACTRL_MPLL_CTRL7,
+			.shift   = 0,
+			.width   = 14,
+		},
+		.sdm_en = {
+			.reg_off = ANACTRL_MPLL_CTRL7,
+			.shift   = 30,
+			.width	 = 1,
+		},
+		.n2 = {
+			.reg_off = ANACTRL_MPLL_CTRL7,
+			.shift   = 20,
+			.width   = 9,
+		},
+		.ssen = {
+			.reg_off = ANACTRL_MPLL_CTRL7,
+			.shift   = 29,
+			.width	 = 1,
+		},
+		.init_regs = s4_mpll3_init_regs,
+		.init_count = ARRAY_SIZE(s4_mpll3_init_regs),
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll3_div",
+		.ops = &meson_clk_mpll_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&s4_mpll_prediv.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap s4_mpll3 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = ANACTRL_MPLL_CTRL7,
+		.bit_idx = 31,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mpll3",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) { &s4_mpll3_div.hw },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+/* Array of all clocks provided by this provider */
+static struct clk_hw *s4_pll_hw_clks[] = {
+	[CLKID_FIXED_PLL_DCO]		= &s4_fixed_pll_dco.hw,
+	[CLKID_FIXED_PLL]		= &s4_fixed_pll.hw,
+	[CLKID_FCLK_DIV2_DIV]		= &s4_fclk_div2_div.hw,
+	[CLKID_FCLK_DIV2]		= &s4_fclk_div2.hw,
+	[CLKID_FCLK_DIV3_DIV]		= &s4_fclk_div3_div.hw,
+	[CLKID_FCLK_DIV3]		= &s4_fclk_div3.hw,
+	[CLKID_FCLK_DIV4_DIV]		= &s4_fclk_div4_div.hw,
+	[CLKID_FCLK_DIV4]		= &s4_fclk_div4.hw,
+	[CLKID_FCLK_DIV5_DIV]		= &s4_fclk_div5_div.hw,
+	[CLKID_FCLK_DIV5]		= &s4_fclk_div5.hw,
+	[CLKID_FCLK_DIV7_DIV]		= &s4_fclk_div7_div.hw,
+	[CLKID_FCLK_DIV7]		= &s4_fclk_div7.hw,
+	[CLKID_FCLK_DIV2P5_DIV]		= &s4_fclk_div2p5_div.hw,
+	[CLKID_FCLK_DIV2P5]		= &s4_fclk_div2p5.hw,
+	[CLKID_GP0_PLL_DCO]		= &s4_gp0_pll_dco.hw,
+	[CLKID_GP0_PLL]			= &s4_gp0_pll.hw,
+	[CLKID_HIFI_PLL_DCO]		= &s4_hifi_pll_dco.hw,
+	[CLKID_HIFI_PLL]		= &s4_hifi_pll.hw,
+	[CLKID_HDMI_PLL_DCO]		= &s4_hdmi_pll_dco.hw,
+	[CLKID_HDMI_PLL_OD]		= &s4_hdmi_pll_od.hw,
+	[CLKID_HDMI_PLL]		= &s4_hdmi_pll.hw,
+	[CLKID_MPLL_50M_DIV]		= &s4_mpll_50m_div.hw,
+	[CLKID_MPLL_50M]		= &s4_mpll_50m.hw,
+	[CLKID_MPLL_PREDIV]		= &s4_mpll_prediv.hw,
+	[CLKID_MPLL0_DIV]		= &s4_mpll0_div.hw,
+	[CLKID_MPLL0]			= &s4_mpll0.hw,
+	[CLKID_MPLL1_DIV]		= &s4_mpll1_div.hw,
+	[CLKID_MPLL1]			= &s4_mpll1.hw,
+	[CLKID_MPLL2_DIV]		= &s4_mpll2_div.hw,
+	[CLKID_MPLL2]			= &s4_mpll2.hw,
+	[CLKID_MPLL3_DIV]		= &s4_mpll3_div.hw,
+	[CLKID_MPLL3]			= &s4_mpll3.hw,
+};
+
+static const struct reg_sequence s4_pll_init_regs[] = {
+	{ .reg = ANACTRL_MPLL_CTRL0,	.def = 0x00000543 },
+};
+
+static const struct meson_clkc_data s4_pll_clkc_data = {
+	.hw_clks = {
+		.hws = s4_pll_hw_clks,
+		.num = ARRAY_SIZE(s4_pll_hw_clks),
+	},
+	.init_regs = s4_pll_init_regs,
+	.init_count = ARRAY_SIZE(s4_pll_init_regs),
+};
+
+static const struct of_device_id s4_pll_clkc_match_table[] = {
+	{
+		.compatible = "amlogic,s4-pll-clkc",
+		.data = &s4_pll_clkc_data,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, s4_pll_clkc_match_table);
+
+static struct platform_driver s4_pll_clkc_driver = {
+	.probe		= meson_clkc_mmio_probe,
+	.driver		= {
+		.name	= "s4-pll-clkc",
+		.of_match_table = s4_pll_clkc_match_table,
+	},
+};
+module_platform_driver(s4_pll_clkc_driver);
+
+MODULE_DESCRIPTION("Amlogic S4 PLL Clock Controller driver");
+MODULE_AUTHOR("Yu Tu <yu.tu@amlogic.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/sclk-div.c

@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ *
+ * Sample clock generator divider:
+ * This HW divider gates with value 0 but is otherwise a zero based divider:
+ *
+ * val >= 1
+ * divider = val + 1
+ *
+ * The duty cycle may also be set for the LR clock variant. The duty cycle
+ * ratio is:
+ *
+ * hi = [0 - val]
+ * duty_cycle = (1 + hi) / (1 + val)
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "sclk-div.h"
+
+static inline struct meson_sclk_div_data *
+meson_sclk_div_data(struct clk_regmap *clk)
+{
+	return (struct meson_sclk_div_data *)clk->data;
+}
+
+static int sclk_div_maxval(struct meson_sclk_div_data *sclk)
+{
+	return (1 << sclk->div.width) - 1;
+}
+
+static int sclk_div_maxdiv(struct meson_sclk_div_data *sclk)
+{
+	return sclk_div_maxval(sclk) + 1;
+}
+
+static int sclk_div_getdiv(struct clk_hw *hw, unsigned long rate,
+			   unsigned long prate, int maxdiv)
+{
+	int div = DIV_ROUND_CLOSEST_ULL((u64)prate, rate);
+
+	return clamp(div, 2, maxdiv);
+}
+
+static int sclk_div_bestdiv(struct clk_hw *hw, unsigned long rate,
+			    unsigned long *prate,
+			    struct meson_sclk_div_data *sclk)
+{
+	struct clk_hw *parent = clk_hw_get_parent(hw);
+	int bestdiv = 0, i;
+	unsigned long maxdiv, now, parent_now;
+	unsigned long best = 0, best_parent = 0;
+
+	if (!rate)
+		rate = 1;
+
+	maxdiv = sclk_div_maxdiv(sclk);
+
+	if (!(clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT))
+		return sclk_div_getdiv(hw, rate, *prate, maxdiv);
+
+	/*
+	 * The maximum divider we can use without overflowing
+	 * unsigned long in rate * i below
+	 */
+	maxdiv = min(ULONG_MAX / rate, maxdiv);
+
+	for (i = 2; i <= maxdiv; i++) {
+		/*
+		 * It's the most ideal case if the requested rate can be
+		 * divided from parent clock without needing to change
+		 * parent rate, so return the divider immediately.
+		 */
+		if (rate * i == *prate)
+			return i;
+
+		parent_now = clk_hw_round_rate(parent, rate * i);
+		now = DIV_ROUND_UP_ULL((u64)parent_now, i);
+
+		if (abs(rate - now) < abs(rate - best)) {
+			bestdiv = i;
+			best = now;
+			best_parent = parent_now;
+		}
+	}
+
+	if (!bestdiv)
+		bestdiv = sclk_div_maxdiv(sclk);
+	else
+		*prate = best_parent;
+
+	return bestdiv;
+}
+
+static int sclk_div_determine_rate(struct clk_hw *hw,
+				   struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+	int div;
+
+	div = sclk_div_bestdiv(hw, req->rate, &req->best_parent_rate, sclk);
+	req->rate = DIV_ROUND_UP_ULL((u64)req->best_parent_rate, div);
+
+	return 0;
+}
+
+static void sclk_apply_ratio(struct clk_regmap *clk,
+			     struct meson_sclk_div_data *sclk)
+{
+	unsigned int hi = DIV_ROUND_CLOSEST(sclk->cached_div *
+					    sclk->cached_duty.num,
+					    sclk->cached_duty.den);
+
+	if (hi)
+		hi -= 1;
+
+	meson_parm_write(clk->map, &sclk->hi, hi);
+}
+
+static int sclk_div_set_duty_cycle(struct clk_hw *hw,
+				   struct clk_duty *duty)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+
+	if (MESON_PARM_APPLICABLE(&sclk->hi)) {
+		memcpy(&sclk->cached_duty, duty, sizeof(*duty));
+		sclk_apply_ratio(clk, sclk);
+	}
+
+	return 0;
+}
+
+static int sclk_div_get_duty_cycle(struct clk_hw *hw,
+				   struct clk_duty *duty)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+	int hi;
+
+	if (!MESON_PARM_APPLICABLE(&sclk->hi)) {
+		duty->num = 1;
+		duty->den = 2;
+		return 0;
+	}
+
+	hi = meson_parm_read(clk->map, &sclk->hi);
+	duty->num = hi + 1;
+	duty->den = sclk->cached_div;
+	return 0;
+}
+
+static void sclk_apply_divider(struct clk_regmap *clk,
+			       struct meson_sclk_div_data *sclk)
+{
+	if (MESON_PARM_APPLICABLE(&sclk->hi))
+		sclk_apply_ratio(clk, sclk);
+
+	meson_parm_write(clk->map, &sclk->div, sclk->cached_div - 1);
+}
+
+static int sclk_div_set_rate(struct clk_hw *hw, unsigned long rate,
+			     unsigned long prate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+	unsigned long maxdiv = sclk_div_maxdiv(sclk);
+
+	sclk->cached_div = sclk_div_getdiv(hw, rate, prate, maxdiv);
+
+	if (clk_hw_is_enabled(hw))
+		sclk_apply_divider(clk, sclk);
+
+	return 0;
+}
+
+static unsigned long sclk_div_recalc_rate(struct clk_hw *hw,
+					  unsigned long prate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+
+	return DIV_ROUND_UP_ULL((u64)prate, sclk->cached_div);
+}
+
+static int sclk_div_enable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+
+	sclk_apply_divider(clk, sclk);
+
+	return 0;
+}
+
+static void sclk_div_disable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+
+	meson_parm_write(clk->map, &sclk->div, 0);
+}
+
+static int sclk_div_is_enabled(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+
+	if (meson_parm_read(clk->map, &sclk->div))
+		return 1;
+
+	return 0;
+}
+
+static int sclk_div_init(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_sclk_div_data *sclk = meson_sclk_div_data(clk);
+	unsigned int val;
+	int ret;
+
+	ret = clk_regmap_init(hw);
+	if (ret)
+		return ret;
+
+	val = meson_parm_read(clk->map, &sclk->div);
+
+	/* if the divider is initially disabled, assume max */
+	if (!val)
+		sclk->cached_div = sclk_div_maxdiv(sclk);
+	else
+		sclk->cached_div = val + 1;
+
+	sclk_div_get_duty_cycle(hw, &sclk->cached_duty);
+
+	return 0;
+}
+
+const struct clk_ops meson_sclk_div_ops = {
+	.recalc_rate	= sclk_div_recalc_rate,
+	.determine_rate	= sclk_div_determine_rate,
+	.set_rate	= sclk_div_set_rate,
+	.enable		= sclk_div_enable,
+	.disable	= sclk_div_disable,
+	.is_enabled	= sclk_div_is_enabled,
+	.get_duty_cycle	= sclk_div_get_duty_cycle,
+	.set_duty_cycle = sclk_div_set_duty_cycle,
+	.init		= sclk_div_init,
+};
+EXPORT_SYMBOL_NS_GPL(meson_sclk_div_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic Sample divider driver");
+MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/sclk-div.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_SCLK_DIV_H
+#define __MESON_SCLK_DIV_H
+
+#include <linux/clk-provider.h>
+#include "parm.h"
+
+struct meson_sclk_div_data {
+	struct parm div;
+	struct parm hi;
+	unsigned int cached_div;
+	struct clk_duty cached_duty;
+};
+
+extern const struct clk_ops meson_sclk_div_ops;
+
+#endif /* __MESON_SCLK_DIV_H */

linux-7.2.3/drivers/clk/meson/vclk.c

@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2024 Neil Armstrong <neil.armstrong@linaro.org>
+ */
+
+#include <linux/module.h>
+#include "vclk.h"
+
+/* The VCLK gate has a supplementary reset bit to pulse after ungating */
+
+static inline struct meson_vclk_gate_data *
+clk_get_meson_vclk_gate_data(struct clk_regmap *clk)
+{
+	return (struct meson_vclk_gate_data *)clk->data;
+}
+
+static int meson_vclk_gate_enable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_gate_data *vclk = clk_get_meson_vclk_gate_data(clk);
+
+	meson_parm_write(clk->map, &vclk->enable, 1);
+
+	/* Do a reset pulse */
+	meson_parm_write(clk->map, &vclk->reset, 1);
+	meson_parm_write(clk->map, &vclk->reset, 0);
+
+	return 0;
+}
+
+static void meson_vclk_gate_disable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_gate_data *vclk = clk_get_meson_vclk_gate_data(clk);
+
+	meson_parm_write(clk->map, &vclk->enable, 0);
+}
+
+static int meson_vclk_gate_is_enabled(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_gate_data *vclk = clk_get_meson_vclk_gate_data(clk);
+
+	return meson_parm_read(clk->map, &vclk->enable);
+}
+
+const struct clk_ops meson_vclk_gate_ops = {
+	.init = clk_regmap_init,
+	.enable = meson_vclk_gate_enable,
+	.disable = meson_vclk_gate_disable,
+	.is_enabled = meson_vclk_gate_is_enabled,
+};
+EXPORT_SYMBOL_NS_GPL(meson_vclk_gate_ops, "CLK_MESON");
+
+/* The VCLK Divider has supplementary reset & enable bits */
+
+static inline struct meson_vclk_div_data *
+clk_get_meson_vclk_div_data(struct clk_regmap *clk)
+{
+	return (struct meson_vclk_div_data *)clk->data;
+}
+
+static unsigned long meson_vclk_div_recalc_rate(struct clk_hw *hw,
+						unsigned long prate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+
+	return divider_recalc_rate(hw, prate, meson_parm_read(clk->map, &vclk->div),
+				   vclk->table, vclk->flags, vclk->div.width);
+}
+
+static int meson_vclk_div_determine_rate(struct clk_hw *hw,
+					 struct clk_rate_request *req)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+
+	return divider_determine_rate(hw, req, vclk->table, vclk->div.width,
+				      vclk->flags);
+}
+
+static int meson_vclk_div_set_rate(struct clk_hw *hw, unsigned long rate,
+				   unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+	int ret;
+
+	ret = divider_get_val(rate, parent_rate, vclk->table, vclk->div.width,
+			      vclk->flags);
+	if (ret < 0)
+		return ret;
+
+	meson_parm_write(clk->map, &vclk->div, ret);
+
+	return 0;
+};
+
+static int meson_vclk_div_enable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+
+	/* Unreset the divider when ungating */
+	meson_parm_write(clk->map, &vclk->reset, 0);
+	meson_parm_write(clk->map, &vclk->enable, 1);
+
+	return 0;
+}
+
+static void meson_vclk_div_disable(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+
+	/* Reset the divider when gating */
+	meson_parm_write(clk->map, &vclk->enable, 0);
+	meson_parm_write(clk->map, &vclk->reset, 1);
+}
+
+static int meson_vclk_div_is_enabled(struct clk_hw *hw)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vclk_div_data *vclk = clk_get_meson_vclk_div_data(clk);
+
+	return meson_parm_read(clk->map, &vclk->enable);
+}
+
+const struct clk_ops meson_vclk_div_ops = {
+	.init = clk_regmap_init,
+	.recalc_rate = meson_vclk_div_recalc_rate,
+	.determine_rate = meson_vclk_div_determine_rate,
+	.set_rate = meson_vclk_div_set_rate,
+	.enable = meson_vclk_div_enable,
+	.disable = meson_vclk_div_disable,
+	.is_enabled = meson_vclk_div_is_enabled,
+};
+EXPORT_SYMBOL_NS_GPL(meson_vclk_div_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic vclk clock driver");
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/vclk.h

@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2024 Neil Armstrong <neil.armstrong@linaro.org>
+ */
+
+#ifndef __VCLK_H
+#define __VCLK_H
+
+#include "clk-regmap.h"
+#include "parm.h"
+
+/**
+ * struct meson_vclk_gate_data - vclk_gate regmap backed specific data
+ *
+ * @enable:	vclk enable field
+ * @reset:	vclk reset field
+ * @flags:	hardware-specific flags
+ *
+ * Flags:
+ * Same as clk_gate except CLK_GATE_HIWORD_MASK which is ignored
+ */
+struct meson_vclk_gate_data {
+	struct parm enable;
+	struct parm reset;
+	u8 flags;
+};
+
+extern const struct clk_ops meson_vclk_gate_ops;
+
+/**
+ * struct meson_vclk_div_data - vclk_div regmap back specific data
+ *
+ * @div:	divider field
+ * @enable:	vclk divider enable field
+ * @reset:	vclk divider reset field
+ * @table:	array of value/divider pairs, last entry should have div = 0
+ *
+ * Flags:
+ * Same as clk_divider except CLK_DIVIDER_HIWORD_MASK which is ignored
+ */
+struct meson_vclk_div_data {
+	struct parm div;
+	struct parm enable;
+	struct parm reset;
+	const struct clk_div_table *table;
+	u8 flags;
+};
+
+extern const struct clk_ops meson_vclk_div_ops;
+
+#endif /* __VCLK_H */

linux-7.2.3/drivers/clk/meson/vid-pll-div.c

@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 BayLibre, SAS.
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "vid-pll-div.h"
+
+static inline struct meson_vid_pll_div_data *
+meson_vid_pll_div_data(struct clk_regmap *clk)
+{
+	return (struct meson_vid_pll_div_data *)clk->data;
+}
+
+/*
+ * This vid_pll divided is a fully programmable fractionnal divider to
+ * achieve complex video clock rates.
+ *
+ * Here are provided the commonly used fraction values provided by Amlogic.
+ */
+
+struct vid_pll_div {
+	unsigned int shift_val;
+	unsigned int shift_sel;
+	unsigned int divider;
+	unsigned int multiplier;
+};
+
+#define VID_PLL_DIV(_val, _sel, _ft, _fb)				\
+	{								\
+		.shift_val = (_val),					\
+		.shift_sel = (_sel),					\
+		.divider = (_ft),					\
+		.multiplier = (_fb),					\
+	}
+
+static const struct vid_pll_div vid_pll_div_table[] = {
+	VID_PLL_DIV(0x0aaa, 0, 2, 1),	/* 2/1  => /2 */
+	VID_PLL_DIV(0x5294, 2, 5, 2),	/* 5/2  => /2.5 */
+	VID_PLL_DIV(0x0db6, 0, 3, 1),	/* 3/1  => /3 */
+	VID_PLL_DIV(0x36cc, 1, 7, 2),	/* 7/2  => /3.5 */
+	VID_PLL_DIV(0x6666, 2, 15, 4),	/* 15/4 => /3.75 */
+	VID_PLL_DIV(0x0ccc, 0, 4, 1),	/* 4/1  => /4 */
+	VID_PLL_DIV(0x739c, 2, 5, 1),	/* 5/1  => /5 */
+	VID_PLL_DIV(0x0e38, 0, 6, 1),	/* 6/1  => /6 */
+	VID_PLL_DIV(0x0000, 3, 25, 4),	/* 25/4 => /6.25 */
+	VID_PLL_DIV(0x3c78, 1, 7, 1),	/* 7/1  => /7 */
+	VID_PLL_DIV(0x78f0, 2, 15, 2),	/* 15/2 => /7.5 */
+	VID_PLL_DIV(0x0fc0, 0, 12, 1),	/* 12/1 => /12 */
+	VID_PLL_DIV(0x3f80, 1, 14, 1),	/* 14/1 => /14 */
+	VID_PLL_DIV(0x7f80, 2, 15, 1),	/* 15/1 => /15 */
+};
+
+#define to_meson_vid_pll_div(_hw) \
+	container_of(_hw, struct meson_vid_pll_div, hw)
+
+static const struct vid_pll_div *_get_table_val(unsigned int shift_val,
+						unsigned int shift_sel)
+{
+	int i;
+
+	for (i = 0 ; i < ARRAY_SIZE(vid_pll_div_table) ; ++i) {
+		if (vid_pll_div_table[i].shift_val == shift_val &&
+		    vid_pll_div_table[i].shift_sel == shift_sel)
+			return &vid_pll_div_table[i];
+	}
+
+	return NULL;
+}
+
+static unsigned long meson_vid_pll_div_recalc_rate(struct clk_hw *hw,
+						   unsigned long parent_rate)
+{
+	struct clk_regmap *clk = to_clk_regmap(hw);
+	struct meson_vid_pll_div_data *pll_div = meson_vid_pll_div_data(clk);
+	const struct vid_pll_div *div;
+
+	div = _get_table_val(meson_parm_read(clk->map, &pll_div->val),
+			     meson_parm_read(clk->map, &pll_div->sel));
+	if (!div || !div->divider) {
+		pr_debug("%s: Invalid config value for vid_pll_div\n", __func__);
+		return 0;
+	}
+
+	return DIV_ROUND_UP_ULL(parent_rate * div->multiplier, div->divider);
+}
+
+const struct clk_ops meson_vid_pll_div_ro_ops = {
+	.init		= clk_regmap_init,
+	.recalc_rate	= meson_vid_pll_div_recalc_rate,
+};
+EXPORT_SYMBOL_NS_GPL(meson_vid_pll_div_ro_ops, "CLK_MESON");
+
+MODULE_DESCRIPTION("Amlogic video pll divider driver");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");

linux-7.2.3/drivers/clk/meson/vid-pll-div.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#ifndef __MESON_VID_PLL_DIV_H
+#define __MESON_VID_PLL_DIV_H
+
+#include <linux/clk-provider.h>
+#include "parm.h"
+
+struct meson_vid_pll_div_data {
+	struct parm val;
+	struct parm sel;
+};
+
+extern const struct clk_ops meson_vid_pll_div_ro_ops;
+
+#endif /* __MESON_VID_PLL_DIV_H */