linux-kernel - [PATCH v1 3/4] arm64: dts: ti: k3-am62x: Add required voltage supplies for OV5640

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Message-ID: <20250429154133.3377962-4-r-donadkar@ti.com>
Date: Tue, 29 Apr 2025 21:11:32 +0530
From: Rishikesh Donadkar <r-donadkar@...com>
To: <nm@...com>, <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <vaishnav.a@...com>, <devarsht@...com>,
        <y-abhilashchandra@...com>, <s-jain1@...com>, <jai.luthra@...ux.dev>,
        <jai.luthra@...asonboard.com>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <imx@...ts.linux.dev>, <r-donadkar@...com>
Subject: [PATCH v1 3/4] arm64: dts: ti: k3-am62x: Add required voltage supplies for OV5640

The device tree overlay for OV5640 requires following voltage
supplies:

AVDD-supply: Analog voltage supply, 2.8 volts
DOVDD-supply: Digital I/O voltage supply, 1.8 volts
DVDD-supply: Digital core voltage supply, 1.5 volts

Add them in the overlay.

Signed-off-by: Rishikesh Donadkar <r-donadkar@...com>
---
 .../boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso  | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso
index 7fc7c95f5cd57..fc77fc77fe0b1 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso
@@ -15,6 +15,33 @@ clk_ov5640_fixed: ov5640-xclk {
 		#clock-cells = <0>;
 		clock-frequency = <12000000>;
 	};
+
+	reg_2p8v: regulator-2p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "2P8V";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		vin-supply = <&vcc_3v3_sys>;
+		regulator-always-on;
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "1P8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_3v3_sys>;
+		regulator-always-on;
+	};
+
+	reg_1p5v: regulator-1p5v {
+		compatible = "regulator-fixed";
+		regulator-name = "1P5V";
+		regulator-min-microvolt = <1500000>;
+		regulator-max-microvolt = <1500000>;
+		vin-supply = <&vcc_3v3_sys>;
+		regulator-always-on;
+	};
 };
 
 &main_i2c2 {
@@ -40,6 +67,11 @@ ov5640: camera@3c {
 
 				clocks = <&clk_ov5640_fixed>;
 				clock-names = "xclk";
+
+				AVDD-supply = <&reg_2p8v>;
+				DOVDD-supply = <&reg_1p8v>;
+				DVDD-supply = <&reg_1p5v>;
+
 				powerdown-gpios = <&exp1 13 GPIO_ACTIVE_LOW>;
 
 				port {
-- 
2.34.1