linux-kernel - [PATCH 1/3] arm64: dts: rockchip: add vcc

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Date:   Tue, 12 Jul 2022 15:32:02 +0200
From:   Michael Riesch <michael.riesch@...fvision.net>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Michael Riesch <michael.riesch@...fvision.net>
Subject: [PATCH 1/3] arm64: dts: rockchip: add vcc_cam regulator to rock-3a

The Radxa ROCK3 Model A features a voltage regulator that provides
a 3V3 supply to the MIPI CSI connector. Add this regulator to the
device tree of the board.

Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
---
 .../boot/dts/rockchip/rk3568-rock-3a.dts      | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index da2ef705ce29..821f9b96914b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -131,6 +131,22 @@ vcc5v0_usb_otg: vcc5v0-usb-otg-regulator {
 		regulator-max-microvolt = <5000000>;
 		vin-supply = <&vcc5v0_usb>;
 	};
+
+	vcc_cam: vcc-cam {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio1 RK_PB1 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc_cam_en>;
+		regulator-name = "vcc_cam";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc3v3_sys>;
+
+		regulator-state-mem {
+			regulator-off-in-suspend;
+		};
+	};
 };
 
 &combphy0 {
@@ -454,6 +470,12 @@ rgmii_phy1: ethernet-phy@0 {
 };
 
 &pinctrl {
+	cam {
+		vcc_cam_en: vcc_cam_en {
+			rockchip,pins = <1 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	ethernet {
 		eth_phy_rst: eth_phy_rst {
 			rockchip,pins = <3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
-- 
2.30.2