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linux-kernel/linux-7.2.3/arch/arm64/boot/dts/freescale/imx93-phyboard-nash-pwm-fan.dtso
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2026-09-06 12:53:21 -06:00

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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (C) 2025 PHYTEC Messtechnik GmbH
* Author: Primoz Fiser <primoz.fiser@norik.com>
*/
#include <dt-bindings/pwm/pwm.h>
#include "imx93-pinfunc.h"
/dts-v1/;
/plugin/;
&{/} {
fan0: pwm-fan {
compatible = "pwm-fan";
#cooling-cells = <2>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_fan>;
cooling-levels = <1 90 150 200 255>;
pwms = <&tpm6 1 40000 PWM_POLARITY_INVERTED>;
};
thermal-zones {
cpu-thermal {
trips {
cpu_low: cpu-low {
hysteresis = <3000>;
temperature = <50000>;
type = "active";
};
cpu_med: cpu-med {
hysteresis = <3000>;
temperature = <58000>;
type = "active";
};
cpu_high: cpu-high {
hysteresis = <3000>;
temperature = <65000>;
type = "active";
};
};
cooling-maps {
map1 {
cooling-device = <&fan0 1 1>;
trip = <&cpu_low>;
};
map2 {
cooling-device = <&fan0 2 2>;
trip = <&cpu_med>;
};
map3 {
cooling-device = <&fan0 4 4>;
trip = <&cpu_high>;
};
};
};
};
};
&tpm6 {
status = "okay";
};
&iomuxc {
pinctrl_fan: fangrp {
fsl,pins = <
MX93_PAD_GPIO_IO23__TPM6_CH1 0x31e
>;
};
};