Messages in this thread Patch in this message | | | From | Alexey Charkov <> | Date | Mon, 06 May 2024 13:36:35 +0400 | Subject | [PATCH v4 4/6] arm64: dts: rockchip: enable automatic fan control on Rock 5B |
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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 <dsimic@manjaro.org> Reviewed-by: Dragan Simic <dsimic@manjaro.org> Signed-off-by: Alexey Charkov <alchark@gmail.com> --- arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 30 ++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts index 21e96c212dd8..b70313643af8 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts @@ -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>; @@ -279,6 +279,34 @@ 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>; -- 2.45.0
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