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68 lines
1.8 KiB
Diff
68 lines
1.8 KiB
Diff
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From 4a152231b050590af771fa3cc8462ed08b691a24 Mon Sep 17 00:00:00 2001
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From: Alexey Charkov <alchark@gmail.com>
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Date: Mon, 17 Jun 2024 22:28:54 +0400
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Subject: [PATCH] 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
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managed automatically by the thermal subsystem, with a target SoC
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temperature of 65C and a minimum-spin interval from 55C to 65C to
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ensure airflow when the system gets warm
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Helped-by: Dragan Simic <dsimic@manjaro.org>
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Reviewed-by: Dragan Simic <dsimic@manjaro.org>
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Signed-off-by: Alexey Charkov <alchark@gmail.com>
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Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-4-c1f5f3267f1e@gmail.com
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Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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---
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.../boot/dts/rockchip/rk3588-rock-5b.dts | 32 ++++++++++++++++++-
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1 file changed, 31 insertions(+), 1 deletion(-)
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--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
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@@ -52,7 +52,7 @@
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fan: pwm-fan {
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compatible = "pwm-fan";
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- cooling-levels = <0 95 145 195 255>;
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+ cooling-levels = <0 120 150 180 210 240 255>;
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fan-supply = <&vcc5v0_sys>;
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pwms = <&pwm1 0 50000 0>;
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#cooling-cells = <2>;
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@@ -278,6 +278,36 @@
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};
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};
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};
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+
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+&package_thermal {
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+ polling-delay = <1000>;
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+
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+ trips {
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+ package_fan0: package-fan0 {
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+ temperature = <55000>;
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+ hysteresis = <2000>;
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+ type = "active";
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+ };
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+
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+ package_fan1: package-fan1 {
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+ temperature = <65000>;
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+ hysteresis = <2000>;
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+ type = "active";
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+ };
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+ };
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+
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+ cooling-maps {
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+ map1 {
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+ trip = <&package_fan0>;
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+ cooling-device = <&fan THERMAL_NO_LIMIT 1>;
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+ };
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+
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+ map2 {
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+ trip = <&package_fan1>;
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+ cooling-device = <&fan 2 THERMAL_NO_LIMIT>;
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+ };
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+ };
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+};
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&pcie2x1l0 {
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pinctrl-names = "default";
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