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arm64: tegra: Enable thermal support on Jetson Orin NX

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Enable the TJ thermal zone and hook up cooling maps for the PWM-
controlled fan and two trip points.

This also removes a duplicate definition of the PWM fan and changes its
cooling levels. This should have no effect, though, because the fan
wasn't previously connected to anything and by default would be turned
off at probe time.

Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2023-06-09 13:45:53 +02:00
parent 1d3fbd3d41
commit a6fb90f0ee
3 changed files with 24 additions and 62 deletions
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62
arch/arm64/boot/dts/nvidia/tegra234-p3767.dtsi
View File

@ -99,73 +99,23 @@
};
thermal-zones {
/*
* This monitoring is far from optimal, but it's good enough
* at this stage.
*/
cpu-thermal {
tj-thermal {
polling-delay = <1000>;
polling-delay-passive = <1000>;
status = "okay";
trips {
critical {
temperature = <104500>;
hysteresis = <0>;
type = "critical";
tj_trip_active0: active-0 {
temperature = <74000>;
hysteresis = <4000>;
type = "active";
};
hot {
temperature = <99000>;
hysteresis = <1000>;
type = "hot";
};
board_trip_passive: passive {
tj_trip_active1: active-1 {
temperature = <95000>;
hysteresis = <2000>;
type = "passive";
};
board_trip_active2: active-2 {
temperature = <80000>;
hysteresis = <4000>;
type = "active";
};
board_trip_active1: active-1 {
temperature = <65000>;
hysteresis = <4000>;
type = "active";
};
board_trip_active0: active-0 {
temperature = <50000>;
hysteresis = <4000>;
type = "active";
};
};
cooling-maps {
passive {
cooling-device = <&fan 3 3>;
trip = <&board_trip_passive>;
};
active2 {
cooling-device = <&fan 2 3>;
trip = <&board_trip_active2>;
};
active1 {
cooling-device = <&fan 1 2>;
trip = <&board_trip_active1>;
};
active0 {
cooling-device = <&fan 0 1>;
trip = <&board_trip_active0>;
};
};
};
};

23
arch/arm64/boot/dts/nvidia/tegra234-p3768-0000+p3767-0000.dts
View File

@ -112,11 +112,8 @@
};
};
fan: pwm-fan {
compatible = "pwm-fan";
pwms = <&pwm3 0 45334>;
cooling-levels = <0 95 178 255>;
#cooling-cells = <2>;
pwm-fan {
cooling-levels = <0 187 255>;
};
vdd_3v3_pcie: regulator-vdd-3v3-pcie {
@ -131,4 +128,20 @@
serial {
status = "okay";
};
thermal-zones {
tj-thermal {
cooling-maps {
map-active-0 {
cooling-device = <&fan 0 1>;
trip = <&tj_trip_active0>;
};
map-active-1 {
cooling-device = <&fan 1 2>;
trip = <&tj_trip_active1>;
};
};
};
};
};

1
arch/arm64/boot/dts/nvidia/tegra234-p3768-0000.dtsi
View File

@ -209,7 +209,6 @@
fan: pwm-fan {
compatible = "pwm-fan";
pwms = <&pwm3 0 45334>;
cooling-levels = <0 95 178 255>;
#cooling-cells = <2>;
};