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arm64: tegra: Enable PWM fan on Jetson Nano

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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";