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

This adds GPU thermal throttling for the Allwinner A33.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
This commit is contained in:
Maxime Ripard 2017-04-05 11:06:33 +02:00
parent a5ce7a3d44
commit e846011ee2
2 changed files with 25 additions and 0 deletions
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1
arch/arm/boot/dts/sun8i-a23-a33.dtsi
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@ -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>;

24
arch/arm/boot/dts/sun8i-a33.dtsi
View File

@ -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>;