Commit 1d3fbd3d authored Jan 26, 2023 by Thierry Reding

arm64: tegra: Enable thermal support on Jetson AGX Orin



Add thermal zone details and enable the PWM fan as cooling device.

Note that this also changes the cooling levels for the PWM fan, which
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>

parent 09d99078

arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi

+22 −0

Original line number	Diff line number	Diff line
		@@ -139,4 +139,26 @@ vdd_12v_pcie: regulator-vdd-12v-pcie {
		gpio = <&gpio TEGRA234_MAIN_GPIO(A, 1) GPIO_ACTIVE_LOW>;
		regulator-boot-on;
		};

		thermal-zones {
		tj-thermal {
		polling-delay = <1000>;
		polling-delay-passive = <1000>;
		status = "okay";

		trips {
		tj_trip_active0: active-0 {
		temperature = <75000>;
		hysteresis = <4000>;
		type = "active";
		};

		tj_trip_active1: active-1 {
		temperature = <95000>;
		hysteresis = <4000>;
		type = "active";
		};
		};
		};
		};
		};

arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts

+17 −5

Original line number	Diff line number	Diff line
		@@ -2343,11 +2343,7 @@ key-suspend {
		};

		pwm-fan {
		compatible = "pwm-fan";
		pwms = <&pwm3 0 45334>;

		cooling-levels = <0 95 178 255>;
		#cooling-cells = <2>;
		cooling-levels = <66 215 255>;
		};

		serial {
		@@ -2433,4 +2429,20 @@ sound {
		"CVB-RT DMIC1", "CVB-RT MIC",
		"CVB-RT DMIC2", "CVB-RT MIC";
		};

		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>;
		};
		};
		};
		};
		};

arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi

+6 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,12 @@ pwm@32f0000 {
		};
		};

		fan: pwm-fan {
		compatible = "pwm-fan";
		pwms = <&pwm3 0 45334>;
		#cooling-cells = <2>;
		};

		vdd_1v8_sys: regulator-vdd-1v8-sys {
		compatible = "regulator-fixed";
		regulator-name = "VDD_1V8_SYS";