openwrt/target/linux/rockchip/patches-6.6/052-14-v6.11-arm64-dts-rockchip-enable-automatic-fan-control-on-Rock-5.patch

From 4a152231b050590af771fa3cc8462ed08b691a24 Mon Sep 17 00:00:00 2001
From: Alexey Charkov <alchark@gmail.com>
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 <dsimic@manjaro.org>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-4-c1f5f3267f1e@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 .../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";