ARM: dts: exynos: Add CPU cooling in Exynos4210 Origen

Add missing cooling devices for CPU thermal zones in Exynos4210 Origen
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/20200830135200.24304-19-krzk@kernel.org

diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts
index 747221b..7d2cfba 100644 (file)
--- a/arch/arm/boot/dts/exynos4210-origen.dts
+++ b/arch/arm/boot/dts/exynos4210-origen.dts
@@ -129,6 +129,19 @@
        cpu0-supply = <&buck1_reg>;
 };
 
+&cpu_thermal {
+       cooling-maps {
+               map0 {
+                       /* Corresponds to 800MHz */
+                       cooling-device = <&cpu0 2 2>;
+               };
+               map1 {
+                       /* Corresponds to 200MHz */
+                       cooling-device = <&cpu0 4 4>;
+               };
+       };
+};
+
 &exynos_usbphy {
        status = "okay";
 };