From: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
This adds GPU thermal throttling for the Allwinner A33.
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx>
---
v3:
- got rid of cooling-min-level and cooling-max-level as it's not used in any
code in the kernel,
added in v2
arch/arm/boot/dts/sun8i-a23-a33.dtsi | 1 +
arch/arm/boot/dts/sun8i-a33.dtsi | 24 ++++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
index 5e8725d..6d81a6d 100644
--- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
@@ -495,6 +495,7 @@
assigned-clocks = <&ccu CLK_GPU>;
assigned-clock-rates = <384000000>;
+ #cooling-cells = <2>;
};
gic: interrupt-controller@01c81000 {
diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi
index 73552bb..a2c6077 100644
--- a/arch/arm/boot/dts/sun8i-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a33.dtsi
@@ -188,6 +188,16 @@
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 {
@@ -198,6 +208,13 @@
type = "passive";
};
+ gpu_alert0: gpu_alert0 {
+ /* milliCelsius */
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
cpu_alert1: cpu_alert1 {
/* milliCelsius */
temperature = <90000>;
@@ -205,6 +222,13 @@
type = "hot";
};
+ gpu_alert1: gpu_alert1 {
+ /* milliCelsius */
+ temperature = <95000>;
+ hysteresis = <2000>;
+ type = "hot";
+ };
+
cpu_crit: cpu_crit {
/* milliCelsius */
temperature = <110000>;
--
2.9.3
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