Commit e1c3804a authored by Vasily Khoruzhick's avatar Vasily Khoruzhick Committed by Maxime Ripard
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arm64: dts: allwinner: a64: add cooling maps and thermal tripping points 



Add cooling maps and thermal tripping points to prevent CPU overheating when
running at the highest frequency. Tripping points are taken from A33 dts since
A64 user manual doesn't mention when we should start throttling.

Signed-off-by: default avatarVasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
parent f267eff7

arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

+44 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ cpu0: cpu@0 { 
			next-level-cache = <&L2>;

			clocks = <&ccu 21>;

			clock-names = "cpu";

			#cooling-cells = <2>;

		};



		cpu1: cpu@1 {
@@ -63,6 +64,7 @@ cpu1: cpu@1 { 
			next-level-cache = <&L2>;

			clocks = <&ccu 21>;

			clock-names = "cpu";

			#cooling-cells = <2>;

		};



		cpu2: cpu@2 {
@@ -73,6 +75,7 @@ cpu2: cpu@2 { 
			next-level-cache = <&L2>;

			clocks = <&ccu 21>;

			clock-names = "cpu";

			#cooling-cells = <2>;

		};



		cpu3: cpu@3 {
@@ -83,6 +86,7 @@ cpu3: cpu@3 { 
			next-level-cache = <&L2>;

			clocks = <&ccu 21>;

			clock-names = "cpu";

			#cooling-cells = <2>;

		};



		L2: l2-cache {
@@ -187,6 +191,46 @@ cpu_thermal: cpu0-thermal { 
			polling-delay-passive = <0>;

			polling-delay = <0>;

			thermal-sensors = <&ths 0>;



			cooling-maps {

				map0 {

					trip = <&cpu_alert0>;

					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>;

				};

				map1 {

					trip = <&cpu_alert1>;

					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>;

				};

			};



			trips {

				cpu_alert0: cpu_alert0 {

					/* milliCelsius */

					temperature = <75000>;

					hysteresis = <2000>;

					type = "passive";

				};



				cpu_alert1: cpu_alert1 {

					/* milliCelsius */

					temperature = <90000>;

					hysteresis = <2000>;

					type = "hot";

				};



				cpu_crit: cpu_crit {

					/* milliCelsius */

					temperature = <110000>;

					hysteresis = <2000>;

					type = "critical";

				};

			};

		};



		gpu0_thermal: gpu0-thermal {