linux-kernel - [PATCH 20/33] ARM: dts: exynos: Add CPU cooling in SMDKv310

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Message-Id: <20200830135200.24304-20-krzk@kernel.org>
Date:   Sun, 30 Aug 2020 15:51:47 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Rob Herring <robh+dt@...nel.org>, Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Denis GNUtoo Carikli" <GNUtoo@...erdimension.org>,
        Simon Shields <simon@...eageos.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sylwester Nawrocki <snawrocki@...nel.org>
Subject: [PATCH 20/33] ARM: dts: exynos: Add CPU cooling in SMDKv310

Add missing cooling devices for CPU thermal zones in Exynos4210 SMDKv310
board.  This allows to scale down CPU frequency (and voltage) in case of
thermal pressure.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 arch/arm/boot/dts/exynos4210-smdkv310.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4210-smdkv310.dts b/arch/arm/boot/dts/exynos4210-smdkv310.dts
index 0b0e86737b26..c5609afa6101 100644
--- a/arch/arm/boot/dts/exynos4210-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4210-smdkv310.dts
@@ -50,6 +50,19 @@
 	};
 };
 
+&cpu_thermal {
+	cooling-maps {
+		map0 {
+			/* Corresponds to 800MHz */
+			cooling-device = <&cpu0 2 2>;
+		};
+		map1 {
+			/* Corresponds to 200MHz */
+			cooling-device = <&cpu0 4 4>;
+		};
+	};
+};
+
 &i2c_0 {
 	#address-cells = <1>;
 	#size-cells = <0>;
-- 
2.17.1