From 4a152231b050590af771fa3cc8462ed08b691a24 Mon Sep 17 00:00:00 2001 From: Alexey Charkov Date: Mon, 17 Jun 2024 22:28:54 +0400 Subject: [PATCH] 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: Dragan Simic Reviewed-by: Dragan Simic Signed-off-by: Alexey Charkov Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-4-c1f5f3267f1e@gmail.com Signed-off-by: Heiko Stuebner --- .../boot/dts/rockchip/rk3588-rock-5b.dts | 32 ++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts @@ -52,7 +52,7 @@ 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>; @@ -278,6 +278,36 @@ }; }; }; + +&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";