Enable PWM fan and extend CPU thermal zones for monitoring and fan control.
This will trigger the PWM fan on J15 and cool down the system if necessary.
Signed-off-by: Tamás Szűcs <tszucs@xxxxxxxxxxxxx>
---
.../boot/dts/nvidia/tegra210-p3450-0000.dts | 64 +++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
index 9d17ec707bce..43c3613e7217 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
@@ -552,6 +552,70 @@
};
};
+ fan: fan {
+ compatible = "pwm-fan";
+ pwms = <&pwm 3 45334>;
+
+ cooling-levels = <0 64 128 255>;
+ #cooling-cells = <2>;
+ };
+
+ thermal-zones {
+ cpu {
+ polling-delay = <0>;
+ polling-delay-passive = <500>;
+ status = "okay";
+
+ trips {
+ cpu_trip_critical: critical {
+ temperature = <96500>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+
+ cpu_trip_hot: hot {
+ temperature = <70000>;
+ hysteresis = <2000>;
+ type = "hot";
+ };
+
+ cpu_trip_active: active {
+ temperature = <50000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+
+ cpu_trip_passive: passive {
+ temperature = <30000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ cpu-critical {
+ cooling-device = <&fan 3 3>;
+ trip = <&cpu_trip_critical>;
+ };
+
+ cpu-hot {
+ cooling-device = <&fan 2 2>;
+ trip = <&cpu_trip_hot>;
+ };
+
+ cpu-active {
+ cooling-device = <&fan 1 1>;
+ trip = <&cpu_trip_active>;
+ };
+
+ cpu-passive {
+ cooling-device = <&fan 0 0>;
+ trip = <&cpu_trip_passive>;
+ };
+ };
+ };
+ };
+
gpio-keys {
compatible = "gpio-keys";
--
2.20.1
