ARM: dts: rockchip: add thermal nodes for RV1108 SoC

Add thermal zone and dynamic CPU power coefficients for RV1108
Signed-off-by: Rocky Hao <rocky.hao@rock-chips.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rv1108.dtsi

@@ -43,6 +43,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/rv1108-cru.h>
 #include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/thermal/thermal.h>
 / {
 	#address-cells = <1>;
 	#size-cells = <1>;
@@ -70,6 +71,8 @@ cpu0: cpu@f00 {
 			compatible = "arm,cortex-a7";
 			reg = <0xf00>;
 			clocks = <&cru ARMCLK>;
+			#cooling-cells = <2>; /* min followed by max */
+			dynamic-power-coefficient = <75>;
 			operating-points-v2 = <&cpu_opp_table>;
 		};
 	};
@@ -329,6 +332,41 @@ watchdog: wdt@10360000 {
 		status = "disabled";
 	};
 
+	thermal-zones {
+		soc_thermal: soc-thermal {
+			polling-delay-passive = <20>;
+			polling-delay = <1000>;
+			sustainable-power = <50>;
+			thermal-sensors = <&tsadc 0>;
+
+			trips {
+				threshold: trip-point0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				target: trip-point1 {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				soc_crit: soc-crit {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&target>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+					contribution = <4096>;
+				};
+			};
+		};
+	};
+
 	tsadc: tsadc@10370000 {
 		compatible = "rockchip,rv1108-tsadc";
 		reg = <0x10370000 0x100>;