linux-kernel - [PATCH 07/10] ARM: dts: Add thermal zone and cpufreq node for exynos3250-artik5 module

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Date:	Mon, 14 Mar 2016 11:04:13 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	k.kozlowski@...sung.com, kgene@...nel.org, s.nawrocki@...sung.com,
	tomasz.figa@...il.com
Cc:	jh80.chung@...sung.com, andi.shyti@...sung.com,
	inki.dae@...sung.com, sw0312.kim@...sung.com,
	pankaj.dubey@...sung.com, cw00.choi@...sung.com,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 07/10] ARM: dts: Add thermal zone and cpufreq node for
 exynos3250-artik5 module

This patch enables the CPU frequency scaling for exynos3250-artik5 module
and adds the thernal zones with cpu cooling device to prevent the overheat
temperature.

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 arch/arm/boot/dts/exynos3250-artik5.dtsi | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/exynos3250-artik5.dtsi b/arch/arm/boot/dts/exynos3250-artik5.dtsi
index 75b291c10cdc..877e4827df83 100644
--- a/arch/arm/boot/dts/exynos3250-artik5.dtsi
+++ b/arch/arm/boot/dts/exynos3250-artik5.dtsi
@@ -31,6 +31,25 @@
 		compatible = "samsung,secure-firmware";
 		reg = <0x0205F000 0x1000>;
 	};
+
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			cooling-maps {
+				map0 {
+					/* Corresponds to 500MHz */
+					cooling-device = <&cpu0 5 5>;
+				};
+				map1 {
+					/* Corresponds to 200MHz */
+					cooling-device = <&cpu0 8 8>;
+				};
+			};
+		};
+	};
+};
+
+&cpu0 {
+	cpu0-supply = <&buck2_reg>;
 };
 
 &i2c_0 {
@@ -296,6 +315,10 @@
 	status = "okay";
 };
 
+&tmu {
+	status = "okay";
+};
+
 &xusbxti {
 	clock-frequency = <24000000>;
 };
-- 
1.9.1