STM32MP135F-DK & OV5640 camera connection

[alpka]

Hello,

I am trying to capture images from OV5640 on STM32MP135F-DK.

When I connect GC2145 camera, I succesfully list devices like below:

I removed GC2145 on the ST camera board and connected OV5640, like below image:

But when i try to list devices, /dev/media0 is not visible. How can i get images from OV5640?

[Erwan SZYMANSKI · Accepted solution]

Hello @alpka ,
By default, the board device tree of STM32MP135F-DK board configure the Galcore camera and not anymore the OV5640. But it is very simple to switch by modifying the device tree. Please see below : 

In arch/arm/boot/dts/stm32mp135f-dk.dts in Linux sources, you will see : 

gc2145: gc2145@3c {
		compatible = "galaxycore,gc2145";
		reg = <0x3c>;
		clocks = <&clk_ext_camera>;
		IOVDD-supply = <&scmi_v3v3_sw>;
		AVDD-supply = <&scmi_v3v3_sw>;
		DVDD-supply = <&scmi_v3v3_sw>;
		powerdown-gpios = <&mcp23017 3 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
		reset-gpios = <&mcp23017 4 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
		status = "okay";

		port {
			gc2145_ep: endpoint {
				remote-endpoint = <&mipid02_0>;
				clock-lanes = <0>;
				data-lanes = <1 2>;
			};
		};
	};

	ov5640: camera@3c {
		compatible = "ovti,ov5640";
		reg = <0x3c>;
		clocks = <&clk_ext_camera>;
		clock-names = "xclk";
		DOVDD-supply = <&scmi_v3v3_sw>;
		status = "disabled";
		powerdown-gpios = <&mcp23017 3 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
		reset-gpios = <&mcp23017 4 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;

		port {
			ov5640_0: endpoint {
				/*remote-endpoint = <&mipid02_0>;*/
				clock-lanes = <0>;
				data-lanes = <1 2>;
			};
		};
	};

Please change the status of ov5640 from disabled to okay and the one of gc2145 from okay to disabled.

Kind regards,
Erwan.