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Commit e846011e authored by Maxime Ripard's avatar Maxime Ripard
Browse files

ARM: sun8i: a33: Add devfreq-based GPU cooling 



This adds GPU thermal throttling for the Allwinner A33.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarQuentin Schulz <quentin.schulz@free-electrons.com>
parent a5ce7a3d

arch/arm/boot/dts/sun8i-a23-a33.dtsi

+1 −0
Original line number Diff line number Diff line
@@ -492,6 +492,7 @@ 
			clocks = <&ccu CLK_BUS_GPU>, <&ccu CLK_GPU>;

			clock-names = "bus", "core";

			resets = <&ccu RST_BUS_GPU>;

			#cooling-cells = <2>;



			assigned-clocks = <&ccu CLK_GPU>;

			assigned-clock-rates = <408000000>;

arch/arm/boot/dts/sun8i-a33.dtsi

+24 −0
Original line number Diff line number Diff line
@@ -407,6 +407,16 @@ 
					trip = <&cpu_alert1>;

					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};



				map2 {

					trip = <&gpu_alert0>;

					cooling-device = <&mali 1 THERMAL_NO_LIMIT>;

				};



				map3 {

					trip = <&gpu_alert1>;

					cooling-device = <&mali 2 THERMAL_NO_LIMIT>;

				};

			};



			trips {
@@ -417,6 +427,13 @@ 
					type = "passive";

				};



				gpu_alert0: gpu_alert0 {

					/* milliCelsius */

					temperature = <85000>;

					hysteresis = <2000>;

					type = "passive";

				};



				cpu_alert1: cpu_alert1 {

					/* milliCelsius */

					temperature = <90000>;
@@ -424,6 +441,13 @@ 
					type = "hot";

				};



				gpu_alert1: gpu_alert1 {

					/* milliCelsius */

					temperature = <95000>;

					hysteresis = <2000>;

					type = "hot";

				};



				cpu_crit: cpu_crit {

					/* milliCelsius */

					temperature = <110000>;