[PATCH v4 2/5] arm64: dts: allwinner: h6: Add cooling map for GPU
From: Clément Péron <hidden>
Date: 2022-09-06 16:07:57
Also in:
dri-devel, linux-devicetree, linux-sunxi, lkml
Subsystem:
arm/allwinner sunxi soc support, the rest · Maintainers:
Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Linus Torvalds
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 <redacted> --- arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 51 +++++++++++++++++++- 1 file changed, 49 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 5a28303d3d4c..53f6660656ac 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi@@ -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>; + }; + }; }; }; };
--
2.34.1
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