Commit a067916d authored by Clément Péron's avatar Clément Péron Committed by Jernej Skrabec
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arm64: dts: allwinner: h6: Add cooling map for GPU 



Add a simple cooling map for the GPU.

This cooling map come from the vendor kernel 4.9 with a
2°C hysteresis added.

Signed-off-by: default avatarClément Péron <peron.clem@gmail.com>
Acked-by: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220906153034.153321-3-peron.clem@gmail.com
parent 5db5663c

arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi

+49 −2
Original line number Diff line number Diff line
@@ -186,6 +186,7 @@ gpu: gpu@1800000 { 
			clocks = <&ccu CLK_GPU>, <&ccu CLK_BUS_GPU>;

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

			resets = <&ccu RST_BUS_GPU>;

			#cooling-cells = <2>;

			status = "disabled";

		};
@@ -1072,9 +1073,55 @@ map0 { 
		};



		gpu-thermal {

			polling-delay-passive = <0>;

			polling-delay = <0>;

			polling-delay-passive = <1000>;

			polling-delay = <2000>;

			thermal-sensors = <&ths 1>;



			trips {

				gpu_alert0: gpu-alert-0 {

					temperature = <95000>;

					hysteresis = <2000>;

					type = "passive";

				};



				gpu_alert1: gpu-alert-1 {

					temperature = <100000>;

					hysteresis = <2000>;

					type = "passive";

				};



				gpu_alert2: gpu-alert-2 {

					temperature = <105000>;

					hysteresis = <2000>;

					type = "passive";

				};



				gpu-crit {

					temperature = <115000>;

					hysteresis = <0>;

					type = "critical";

				};

			};



			cooling-maps {

				// Forbid the GPU to go over 756MHz

				map0 {

					trip = <&gpu_alert0>;

					cooling-device = <&gpu 1 THERMAL_NO_LIMIT>;

				};



				// Forbid the GPU to go over 624MHz

				map1 {

					trip = <&gpu_alert1>;

					cooling-device = <&gpu 2 THERMAL_NO_LIMIT>;

				};



				// Forbid the GPU to go over 576MHz

				map2 {

					trip = <&gpu_alert2>;

					cooling-device = <&gpu 3 THERMAL_NO_LIMIT>;

				};

			};

		};

	};

};