The cooling levels are tuned to the fan that comes with the rockpro64 NAS
case. A gpu_thermal zone was not added because having two active cooling
maps control one physical fan causes them to compete for the fan speed
which results in erratic fan behavior.
Signed-off-by: Kurt Miller <k...@intricatesoftware.com>
---
arch/arm/dts/rk3399-rockpro64-u-boot.dtsi | 43 +++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
index deaa3efd39..c0e0396758 100644
--- a/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-rockpro64-u-boot.dtsi
@@ -13,6 +13,49 @@
chosen {
u-boot,spl-boot-order = "same-as-spl", &sdmmc, &sdhci;
};
+
+ fan: pwm-fan {
+ cooling-levels = <0 40 80 255>;
+ };
+};
+
+&cpu_thermal {
+ trips {
+ cpu_warm: cpu_warm {
+ temperature = <50000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+
+ cpu_med: cpu_med {
+ temperature = <60000>;
+ 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_med>;
+ cooling-device = <&fan THERMAL_NO_LIMIT 2>;
+ };
+
+ map4 {
+ trip = <&cpu_hot>;
+ cooling-device = <&fan 2 THERMAL_NO_LIMIT>;
+ };
+ };
};
&vdd_center {
--
2.26.2
