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@ti.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

On 29/04/25 21:11, Rishikesh Donadkar wrote:
> The device tree overlay for OV5640 requires following voltage
> supplies

As mentioned in ov5640 data-sheet table 8-3 [1]
> 
> 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
> 

[1]:
Link:
https://cdn.sparkfun.com/datasheets/Sensors/LightImaging/OV5640_datasheet.pdf

> Add them in the overlay.
> 
> Signed-off-by: Rishikesh Donadkar <r-donadkar@ti.com>

With above changes,
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>

Regards
Devarsh
> ---
>  .../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 {