Thread (50 messages) 50 messages, 4 authors, 2020-09-02
STALE2107d LANDED

[PATCH 19/33] ARM: dts: exynos: Add CPU cooling in Origen

From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2020-08-30 14:00:38
Also in: linux-devicetree, linux-samsung-soc, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

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>

---

Not tested on HW.
---
 arch/arm/boot/dts/exynos4210-origen.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts
index fcf45619a3e4..d6d8a8096eb4 100644
--- 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";
 };
-- 
2.17.1


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