Commit 107f2c69 authored by Dmitry Osipenko's avatar Dmitry Osipenko Committed by Thierry Reding
Browse files

ARM: tegra: cardhu: Support CPU thermal throttling 



Enable CPU thermal throttling on Tegra30 Cardhu board.

Signed-off-by: default avatarDmitry Osipenko <digetx@gmail.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent ed34855b

arch/arm/boot/dts/tegra30-cardhu.dtsi

+42 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <dt-bindings/input/input.h>

#include <dt-bindings/thermal/thermal.h>

#include "tegra30.dtsi"

#include "tegra30-cpu-opp.dtsi"

#include "tegra30-cpu-opp-microvolt.dtsi"
@@ -341,12 +342,13 @@ ldo8_reg: ldo8 { 
			};

		};



		temperature-sensor@4c {

		nct1008: temperature-sensor@4c {

			compatible = "onnn,nct1008";

			reg = <0x4c>;

			vcc-supply = <&sys_3v3_reg>;

			interrupt-parent = <&gpio>;

			interrupts = <TEGRA_GPIO(CC, 2) IRQ_TYPE_LEVEL_LOW>;

			#thermal-sensor-cells = <1>;

		};



		vdd_core: tps62361@60 {
@@ -440,21 +442,25 @@ cpus { 
		cpu0: cpu@0 {

			cpu-supply = <&vddctrl_reg>;

			operating-points-v2 = <&cpu0_opp_table>;

			#cooling-cells = <2>;

		};



		cpu1: cpu@1 {

			cpu-supply = <&vddctrl_reg>;

			operating-points-v2 = <&cpu0_opp_table>;

			#cooling-cells = <2>;

		};



		cpu2: cpu@2 {

			cpu-supply = <&vddctrl_reg>;

			operating-points-v2 = <&cpu0_opp_table>;

			#cooling-cells = <2>;

		};



		cpu3: cpu@3 {

			cpu-supply = <&vddctrl_reg>;

			operating-points-v2 = <&cpu0_opp_table>;

			#cooling-cells = <2>;

		};

	};
@@ -637,6 +643,41 @@ sound { 
					 <&tegra_car TEGRA30_CLK_EXTERN1>;

	};



	thermal-zones {

		cpu-thermal {

			polling-delay-passive = <1000>; /* milliseconds */

			polling-delay = <5000>; /* milliseconds */



			thermal-sensors = <&nct1008 1>;



			trips {

				trip0: cpu-alert0 {

					/* throttle at 57C until temperature drops to 56.8C */

					temperature = <57000>;

					hysteresis = <200>;

					type = "passive";

				};



				trip1: cpu-crit {

					/* shut down at 60C */

					temperature = <60000>;

					hysteresis = <2000>;

					type = "critical";

				};

			};



			cooling-maps {

				map0 {

					trip = <&trip0>;

					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

							 <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

							 <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,

							 <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};

			};

		};

	};



	gpio-keys {

		compatible = "gpio-keys";