operating-system/buildroot-external/board/hardkernel/odroid-c2/patches/linux/aside/120_odroidc2-enable-scpi-cpu-thermal.patch

--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts	2018-04-29 05:46:55.636313674 +0200
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts	2018-04-29 00:07:14.412005049 +0200
@@ -46,6 +46,7 @@
 
 #include "meson-gxbb.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	compatible = "hardkernel,odroid-c2", "amlogic,meson-gxbb";
@@ -117,6 +118,41 @@
 			  1800000 1>;
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <250>; /* milliseconds */
+			polling-delay = <1000>; /* milliseconds */
+
+			thermal-sensors = <&scpi_sensors 0>;
+
+			trips {
+				cpu_alert0: cpu-alert0 {
+					temperature = <70000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				cpu_alert1: cpu-alert1 {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+				cpu_crit: cpu_crit {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert1>;
+					cooling-device =
+						<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
+
 	vcc1v8: regulator-vcc1v8 {
 		compatible = "regulator-fixed";
 		regulator-name = "VCC1V8";
@@ -192,6 +228,10 @@
 	status = "okay";
 };
 
+&cpu0 {
+	#cooling-cells = <2>;
+};
+
 &ethmac {
 	status = "okay";
 	pinctrl-0 = <&eth_rgmii_pins>;