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>

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
index 8124999..319b3a9 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
@@ -139,4 +139,26 @@
                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";
+                               };
+                       };
+               };
+       };
 };

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
index 5f3d6dc..cd13cf2 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
@@ -2343,11 +2343,7 @@
        };
 
        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 @@
                          "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>;
+                               };
+                       };
+               };
+       };
 };

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
index 022a540..d94147f 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi
@@ -33,6 +33,12 @@
                };
        };
 
+       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";