arm64: dts: qcom: sm8650: Throttle the GPU when overheating

Add an 85C passive trip point to ensure the thermal framework takes
sufficient action to prevent reaching junction temperature and a
110C critical point to help avoid hw damage.

Also, register the GPU as a cooling device and hook it up to the
right thermal zones.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240510-topic-gpus_are_cool_now-v1-12-ababc269a438@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm8650.dtsi

@@ -2632,6 +2632,7 @@ gpu: gpu@3d00000 {
 			operating-points-v2 = <&gpu_opp_table>;
 
 			qcom,gmu = <&gmu>;
+			#cooling-cells = <2>;
 
 			status = "disabled";
 
@@ -6028,16 +6029,29 @@ gpuss0-thermal {
 
 			thermal-sensors = <&tsens2 1>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu0_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu0_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss0-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6048,16 +6062,29 @@ gpuss1-thermal {
 
 			thermal-sensors = <&tsens2 2>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu1_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu1_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss1-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6068,16 +6095,29 @@ gpuss2-thermal {
 
 			thermal-sensors = <&tsens2 3>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu2_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu2_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss2-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6088,16 +6128,29 @@ gpuss3-thermal {
 
 			thermal-sensors = <&tsens2 4>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu3_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu3_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss3-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6108,16 +6161,29 @@ gpuss4-thermal {
 
 			thermal-sensors = <&tsens2 5>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu4_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu4_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss4-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6128,16 +6194,29 @@ gpuss5-thermal {
 
 			thermal-sensors = <&tsens2 6>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu5_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu5_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss5-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6148,16 +6227,29 @@ gpuss6-thermal {
 
 			thermal-sensors = <&tsens2 7>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu6_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu6_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss6-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};
@@ -6168,16 +6260,29 @@ gpuss7-thermal {
 
 			thermal-sensors = <&tsens2 8>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu7_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
-				trip-point0 {
+				gpu7_alert0: trip-point0 {
+					temperature = <85000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+
+				trip-point1 {
 					temperature = <90000>;
-					hysteresis = <2000>;
+					hysteresis = <1000>;
 					type = "hot";
 				};
 
-				gpuss7-critical {
+				trip-point2 {
 					temperature = <110000>;
-					hysteresis = <0>;
+					hysteresis = <1000>;
 					type = "critical";
 				};
 			};