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arm64: dts: allwinner: h6: Add cooling map for GPU

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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: Clément Péron <peron.clem@gmail.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220906153034.153321-3-peron.clem@gmail.com
This commit is contained in:
Clément Péron 2022-09-06 17:30:31 +02:00 committed by Jernej Skrabec
parent 5db5663cdf
commit a067916d20
1 changed files with 49 additions and 2 deletions
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51
arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
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@ -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>;
};
};
};
};
};