From 1d3fbd3d41a6c7552126ce39b81591de942a4207 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 26 Jan 2023 14:34:02 +0100 Subject: [PATCH] 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 Signed-off-by: Thierry Reding --- .../arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi | 22 ++++++++++++++++++++++ .../dts/nvidia/tegra234-p3737-0000+p3701-0000.dts | 22 +++++++++++++++++----- .../arm64/boot/dts/nvidia/tegra234-p3737-0000.dtsi | 6 ++++++ 3 files changed, 45 insertions(+), 5 deletions(-) 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 --- 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 --- 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 --- 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"; -- 2.7.4