linux-kernel - [PATCH] arm64: dts: exynos: add pwm node for exynosautov9-sadk

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Message-Id: <20230714051521.22720-1-jaewon02.kim@samsung.com>
Date:   Fri, 14 Jul 2023 14:15:21 +0900
From:   Jaewon Kim <jaewon02.kim@...sung.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chanho Park <chanho61.park@...sung.com>,
        Jaewon Kim <jaewon02.kim@...sung.com>
Subject: [PATCH] arm64: dts: exynos: add pwm node for exynosautov9-sadk

Add pwm node to support fan on exynosautov9-sadk board.
PWM channel 3 of ExynosAutov9 is connected to fan for SoC cooling
in SADK board.

Signed-off-by: Jaewon Kim <jaewon02.kim@...sung.com>
---
 arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts | 6 ++++++
 arch/arm64/boot/dts/exynos/exynosautov9.dtsi     | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
index 898c2fc345ed..e717bb1cad81 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
+++ b/arch/arm64/boot/dts/exynos/exynosautov9-sadk.dts
@@ -50,6 +50,12 @@
 	};
 };
 
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_tout3>;
+	status = "okay";
+};
+
 &serial_0 {
 	pinctrl-0 = <&uart0_bus_dual>;
 	status = "okay";
diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
index d3c5cdeff47f..e8860b03fe89 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
@@ -1560,6 +1560,15 @@
 			samsung,syscon-phandle = <&pmu_system_controller>;
 			samsung,cluster-index = <1>;
 		};
+
+		pwm: pwm@...f0000 {
+			compatible = "samsung,exynos4210-pwm";
+			reg = <0x103f0000 0x100>;
+			samsung,pwm-outputs = <0>, <1>, <2>, <3>;
+			#pwm-cells = <3>;
+			clocks = <&xtcxo>;
+			clock-names = "timers";
+		};
 	};
 };
 
-- 
2.17.1