linux-kernel - [PATCH 30/33] ARM: dts: exynos: Add CPU cooling in Tiny4412

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Message-Id: <20200830135200.24304-30-krzk@kernel.org>
Date:   Sun, 30 Aug 2020 15:51:57 +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 30/33] ARM: dts: exynos: Add CPU cooling in Tiny4412

Add missing cooling devices for CPU thermal zones in Exynos4412 Tiny4412
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/exynos4412-tiny4412.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4412-tiny4412.dts b/arch/arm/boot/dts/exynos4412-tiny4412.dts
index 3a91de8a8082..7512c86e634e 100644
--- a/arch/arm/boot/dts/exynos4412-tiny4412.dts
+++ b/arch/arm/boot/dts/exynos4412-tiny4412.dts
@@ -78,6 +78,21 @@
 	};
 };
 
+&cpu_thermal {
+	cooling-maps {
+		cooling_map0: map0 {
+			/* Corresponds to 800MHz at freq_table */
+			cooling-device = <&cpu0 7 7>, <&cpu1 7 7>,
+					 <&cpu2 7 7>, <&cpu3 7 7>;
+		};
+		cooling_map1: map1 {
+			/* Corresponds to 200MHz at freq_table */
+			cooling-device = <&cpu0 13 13>, <&cpu1 13 13>,
+					 <&cpu2 13 13>, <&cpu3 13 13>;
+		};
+	};
+};
+
 &fimd {
 	pinctrl-0 = <&lcd_clk>, <&lcd_data24>;
 	pinctrl-names = "default";
-- 
2.17.1