STM32MP135F-DK raspberry pi camera module v2.1

[kagan_senkeser]

Hello,

I have STM32MP135F-DK board and raspberry pi camera module v2.1 but board does not see camera
I guess I have to modify stm32mp135f-dk.dtb file. 

But how should I write settings like OV5640 or GC2145 in dtb file
like that

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>;

};



And after chaning that file should I do anything to take photo with raspberry pi camera module v2.1

[Will_Robertson]

Hi @kagan_senkeser 

It may be worth considering the STM32MP257F-EV1 or STM32MP257F-DK (due to be available in January 2025) development boards for the STM32MP257 microprocessor - the STM32MP257 has a built-in MIPI CSI-2 interface whereas connection to a MIPI CSI-2 camera from the STM32MP135 was via an external chip.

The Raspberry Pi Camera Module v3 has a significantly newer senor than v2.1 and may also be well worth trying.

Will

[cbcosta]

Hi @Will_Robertson 

We have the setup that you mentioned ( STM32MP257F-EV1 + raspberry camera module v2.1), and although it has the same MIPI CSI-2 interface, the camera is not recognized in the board, using the basic example. We assume that it has the same connector, but it's not a direct replacement for the "b-cams-imx".  There are some questions on the forum about the compatibility but no answers. Is it possible to use the eval board with the rasp camera ?

Best regards,

[PatrickF]

Hi, 

HW wise, you should have corresponding supplies and signalling, as well as I2C. I think it is matter of some simple adapter (if needed).

I'm not Sw expert, but I guess you should define the right sensor in the device tree in order to use the right driver.

see some example:

https://wiki.st.com/stm32mpu/wiki/Camera_sensors_hardware_components

Seems Rpi camera V2 is Sony IMX219  while v3 is Sony IMX708 

I have found the IMX219, so this one is maybe the easiest one.

https://github.com/STMicroelectronics/linux/blob/v6.6-stm32mp/Documentation/devicetree/bindings/media/i2c/imx219.yaml

Regards.