ARM: dts: exynos: Add CPU cooling in Universal C210

Add missing cooling devices for CPU thermal zones in Exynos4210
Universal C310 board.  This allows to scale down CPU frequency (and
voltage) in case of thermal pressure.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200830135200.24304-21-krzk@kernel.org

diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts
index 3d596c6260b1642be24b85608c8b679673b4f1e7..d1edadb735800c3fabd3c17cea7c0f931f6eae39 100644 (file)
--- a/arch/arm/boot/dts/exynos4210-universal_c210.dts
+++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts
@@ -199,6 +199,19 @@
        cpu0-supply = <&vdd_arm_reg>;
 };
 
+&cpu_thermal {
+       cooling-maps {
+               map0 {
+                       /* Corresponds to 800MHz */
+                       cooling-device = <&cpu0 2 2>;
+               };
+               map1 {
+                       /* Corresponds to 200MHz */
+                       cooling-device = <&cpu0 4 4>;
+               };
+       };
+};
+
 &ehci {
        status = "okay";
        phys = <&exynos_usbphy 1>;