From: Thierry Reding <treding@nvidia.com>
Date: Thu, 26 Jan 2023 13:34:02 +0000 (+0100)
Subject: arm64: tegra: Enable thermal support on Jetson AGX Orin
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1d3fbd3d41a6c7552126ce39b81591de942a4207;p=linux.git

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 812499918085e..319b3a9cff244 100644
--- 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 5f3d6dcf10a2b..cd13cf2381dde 100644
--- 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 022a5408d8693..d94147f22ebf7 100644
--- 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";