[PATCH 02/12] arm64: dts: qcom: sc8280xp: Throttle the GPU when overheating

[Konrad Dybcio]

Add an 85C passive trip point with 1C of hysteresis to ensure the
thermal framework takes sufficient action to prevent reaching junction
temperature. Also, add passive polling to ensure more than one
temperature change event is recorded.

Fixes: 014bbc990e27 ("arm64: dts: qcom: sc8280xp: Introduce additional tsens instances")
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index f63951186a5b..65c444cce00c 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -5956,10 +5956,25 @@ cpu-crit {
 		};
 
 		gpu-thermal {
+			polling-delay-passive = <250>;
+
 			thermal-sensors = <&tsens2 2>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				gpu-crit {
+				gpu_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <110000>;
 					hysteresis = <1000>;
 					type = "critical";

-- 
2.40.1