From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Bochun Bai <bbc@sinofool.net>
Date: Sun, 18 Jun 2023 11:56:34 +0200
Subject: Add pwm-fan support to nanopi r4s

---
 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi | 35 ++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
index 111111111111..222222222222 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dtsi
@@ -60,6 +60,41 @@ vdd_5v: regulator-vdd-5v {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	fan: pwm-fan {
+		compatible = "pwm-fan";
+		cooling-levels = <0 18 102 170 255>;
+		fan-supply = <&vdd_5v>;
+		pwms = <&pwm1 0 50000 0>;
+	};
+};
+
+&cpu_thermal {
+	trips {
+		cpu_warm: cpu_warm {
+			temperature = <55000>;
+			hysteresis = <2000>;
+			type = "active";
+		};
+
+		cpu_hot: cpu_hot {
+			temperature = <65000>;
+			hysteresis = <2000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map2 {
+			trip = <&cpu_warm>;
+			cooling-device = <&fan THERMAL_NO_LIMIT 1>;
+		};
+
+		map3 {
+			trip = <&cpu_hot>;
+			cooling-device = <&fan 2 THERMAL_NO_LIMIT>;
+		};
+	};
 };
 
 &emmc_phy {
-- 
Armbian