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arm64: tegra: Enable PWM fan on Jetson Nano 

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@protonmail.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Tamás Szűcs 2019-12-08 20:55:31 +01:00 committed by Thierry Reding
parent 09903c5e07
commit 6f78a9460f
1 changed files with 60 additions and 0 deletions
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60
arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
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@ -573,6 +573,66 @@
};
};
fan: fan {
compatible = "pwm-fan";
pwms = <&pwm 3 45334>;
cooling-levels = <0 64 128 255>;
#cooling-cells = <2>;
};
thermal-zones {
cpu {
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";