linux-kernel - [PATCH v1 2/4] arm64: dts: ti: k3-am62x: Add required voltage supplies for IMX219

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Message-ID: <20250429154133.3377962-3-r-donadkar@ti.com>
Date: Tue, 29 Apr 2025 21:11:31 +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 2/4] arm64: dts: ti: k3-am62x: Add required voltage supplies for IMX219

The device tree overlay for the IMX219 sensor requires three voltage
supplies to be defined: VANA (analog), VDIG (digital core), and VDDL
(digital I/O).

Add the corresponding voltage supply definitions to avoid dtbs_check
warnings.

Signed-off-by: Rishikesh Donadkar <r-donadkar@...com>
---
 .../boot/dts/ti/k3-am62x-sk-csi2-imx219.dtso  | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-imx219.dtso b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-imx219.dtso
index dd090813a32d6..149c59c071823 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-imx219.dtso
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-imx219.dtso
@@ -15,6 +15,33 @@ clk_imx219_fixed: imx219-xclk {
 		#clock-cells = <0>;
 		clock-frequency = <24000000>;
 	};
+
+	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_1p2v: regulator-1p2v {
+		compatible = "regulator-fixed";
+		regulator-name = "1P2V";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&vcc_3v3_sys>;
+		regulator-always-on;
+	};
 };
 
 &main_i2c2 {
@@ -40,6 +67,10 @@ ov5640: camera@10 {
 
 				clocks = <&clk_imx219_fixed>;
 
+				VANA-supply = <&reg_2p8v>;
+				VDIG-supply = <&reg_1p8v>;
+				VDDL-supply = <&reg_1p2v>;
+
 				reset-gpios = <&exp1 13 GPIO_ACTIVE_HIGH>;
 
 				port {
-- 
2.34.1