[PATCH v3 6/6] ARM: tegra: Add SOCTHERM support on Tegra114

Svyatoslav Ryhel
2025-08-20T11:43:07Z

Add SOCTHERM and thermal zones nodes into common Tegra 4 device tree.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
arch/arm/boot/dts/nvidia/tegra114.dtsi | 197 +++++++++++++++++++++++++
1 file changed, 197 insertions(+)

diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi
index 3ee51d7f3935..d9c51e6900d8 100644
--- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
@@ -5,6 +5,7 @@
#include <dt-bindings/pinctrl/pinctrl-tegra.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/reset/tegra114-car.h>
+#include <dt-bindings/thermal/tegra114-soctherm.h>
#include <dt-bindings/soc/tegra-pmc.h>

/ {
@@ -694,6 +695,46 @@ mipi: mipi@700e3000 {
#nvidia,mipi-calibrate-cells = <1>;
};

+ soctherm: thermal-sensor@700e2000 {
+ compatible = "nvidia,tegra114-soctherm";
+ reg = <0x700e2000 0x600>, /* SOC_THERM reg_base */
+ <0x60006000 0x400>; /* CAR reg_base */
+ reg-names = "soctherm-reg", "car-reg";
+ interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "thermal", "edp";
+ clocks = <&tegra_car TEGRA114_CLK_TSENSOR>,
+ <&tegra_car TEGRA114_CLK_SOC_THERM>;
+ clock-names = "tsensor", "soctherm";
+ resets = <&tegra_car 78>;
+ reset-names = "soctherm";
+
+ assigned-clocks = <&tegra_car TEGRA114_CLK_TSENSOR>,
+ <&tegra_car TEGRA114_CLK_SOC_THERM>;
+ assigned-clock-rates = <500000>, <51000000>;
+
+ assigned-clock-parents = <&tegra_car TEGRA114_CLK_CLK_M>,
+ <&tegra_car TEGRA114_CLK_PLL_P>;
+
+ #thermal-sensor-cells = <1>;
+
+ throttle-cfgs {
+ throttle_heavy: heavy {
+ nvidia,priority = <100>;
+ nvidia,cpu-throt-percent = <80>;
+ nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>;
+ #cooling-cells = <2>;
+ };
+
+ throttle_light: light {
+ nvidia,priority = <80>;
+ nvidia,cpu-throt-percent = <50>;
+ nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_MED>;
+ #cooling-cells = <2>;
+ };
+ };
+ };
+
dfll: clock@70110000 {
compatible = "nvidia,tegra114-dfll";
reg = <0x70110000 0x100>, /* DFLL control */
@@ -858,24 +899,28 @@ cpu0: cpu@0 {
clock-names = "cpu_g", "cpu_lp", "pll_x", "pll_p", "dfll";
/* FIXME: what's the actual transition time? */
clock-latency = <300000>;
+ #cooling-cells = <2>;
};

cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <1>;
+ #cooling-cells = <2>;
};

cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <2>;
+ #cooling-cells = <2>;
};

cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <3>;
+ #cooling-cells = <2>;
};
};

@@ -888,6 +933,158 @@ pmu {
interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
};

+ thermal-zones {
+ cpu-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors =
+ <&soctherm TEGRA114_SOCTHERM_SENSOR_CPU>;
+
+ trips {
+ cpu-shutdown-trip {
+ temperature = <102000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+
+ cpu_throttle_trip: cpu-throttle-trip {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
+
+ cpu_balanced_trip: cpu-balanced-trip {
+ temperature = <90000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_throttle_trip>;
+ cooling-device = <&throttle_heavy 1 1>;
+ };
+
+ map1 {
+ trip = <&cpu_balanced_trip>;
+ cooling-device = <&throttle_light 1 1>;
+ };
+ };
+ };
+
+ mem-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors =
+ <&soctherm TEGRA114_SOCTHERM_SENSOR_MEM>;
+
+ trips {
+ mem-shutdown-trip {
+ temperature = <102000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+
+ mem_throttle_trip: mem-throttle-trip {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
+
+ mem_balanced_trip: mem-balanced-trip {
+ temperature = <90000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ /*
+ * There are currently no cooling maps,
+ * because there are no cooling devices.
+ */
+ };
+ };
+
+ gpu-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors =
+ <&soctherm TEGRA114_SOCTHERM_SENSOR_GPU>;
+
+ trips {
+ gpu-shutdown-trip {
+ temperature = <102000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+
+ gpu_throttle_trip: gpu-throttle-trip {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
+
+ gpu_balanced_trip: gpu-balanced-trip {
+ temperature = <90000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&gpu_throttle_trip>;
+ cooling-device = <&throttle_heavy 1 1>;
+ };
+
+ map1 {
+ trip = <&gpu_balanced_trip>;
+ cooling-device = <&throttle_light 1 1>;
+ };
+ };
+ };
+
+ pllx-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors =
+ <&soctherm TEGRA114_SOCTHERM_SENSOR_PLLX>;
+
+ trips {
+ pllx-shutdown-trip {
+ temperature = <102000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+
+ pllx_throttle_trip: pllx-throttle-trip {
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "hot";
+ };
+
+ pllx_balanced_trip: pllx-balanced-trip {
+ temperature = <90000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+ };
+
+ cooling-maps {
+ /*
+ * There are currently no cooling maps,
+ * because there are no cooling devices.
+ */
+ };
+ };
+ };
+
timer {
compatible = "arm,armv7-timer";
interrupts =
--
2.48.1