Commit 4a152231 authored by Alexey Charkov's avatar Alexey Charkov Committed by Heiko Stuebner
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arm64: dts: rockchip: enable automatic fan control on Rock 5B 



This links the PWM fan on Radxa Rock 5B as an active cooling device
managed automatically by the thermal subsystem, with a target SoC
temperature of 65C and a minimum-spin interval from 55C to 65C to
ensure airflow when the system gets warm

Helped-by: default avatarDragan Simic <dsimic@manjaro.org>
Reviewed-by: default avatarDragan Simic <dsimic@manjaro.org>
Signed-off-by: default avatarAlexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-4-c1f5f3267f1e@gmail.com


Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent b78f8794

arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts

+31 −1
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ led_rgb_b { 


	fan: pwm-fan {

		compatible = "pwm-fan";

		cooling-levels = <0 95 145 195 255>;

		cooling-levels = <0 120 150 180 210 240 255>;

		fan-supply = <&vcc5v0_sys>;

		pwms = <&pwm1 0 50000 0>;

		#cooling-cells = <2>;
@@ -286,6 +286,36 @@ i2s0_8ch_p0_0: endpoint { 
	};

};



&package_thermal {

	polling-delay = <1000>;



	trips {

		package_fan0: package-fan0 {

			temperature = <55000>;

			hysteresis = <2000>;

			type = "active";

		};



		package_fan1: package-fan1 {

			temperature = <65000>;

			hysteresis = <2000>;

			type = "active";

		};

	};



	cooling-maps {

		map1 {

			trip = <&package_fan0>;

			cooling-device = <&fan THERMAL_NO_LIMIT 1>;

		};



		map2 {

			trip = <&package_fan1>;

			cooling-device = <&fan 2 THERMAL_NO_LIMIT>;

		};

	};

};



&pcie2x1l0 {

	pinctrl-names = "default";

	pinctrl-0 = <&pcie2_0_rst>;