Diligent Pcan 5C (Ov5640 using 0x3d I2C address) on imx8

marekbelisko · ‎12-07-2021

Hello,

I'm trying to test Dilligent Pcam 5C (using OV 5640 sensor). By just plugging it to by board camera is not recognized (cannot communicate over I2C).

I checked with i2cdetect and camera is not present on 0x3C but on 0x3D I2C address. When adjusted dts and recompile it I'm still getting:

[ 2.419131] ov5640_mipi 1-003d: No pin available
[ 2.423789] ov5640_mipi 1-003d: No sensor pwdn pin available
[ 2.429486] ov5640_mipi 1-003d: No sensor reset pin available
[ 2.435302] ov5640_mipi 1-003d: 1-003d supply DOVDD not found, using dummy regulator
[ 2.443128] ov5640_mipi 1-003d: 1-003d supply DVDD not found, using dummy regulator
[ 2.450856] ov5640_mipi 1-003d: 1-003d supply AVDD not found, using dummy regulator
[ 2.465884] ov5640_mipi 1-003d: Failed to update SCCB_ID to 0x7a

By reading code during probe camera switch I2C address to 0x78 but for my case seems it's not working. Anyone have similar experience and maybe some idea how to resolve this issue? Thanks.

igorpadykov · ‎12-07-2021

Hi Marek

what processor and bsp used in the case. May be recommended to try nxp linux

https://source.codeaurora.org/external/imx/linux-imx/tree/?h=lf-5.10.y

Documentation

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Best regards
igor

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marekbelisko · ‎12-07-2021

Hi Igor,

imx8mq and BSP I'm using dunfell yocto release (kernel 5.4.xx). On imx8mq evk camera chip ov5640 works fine (according dts -> I didn't try it by myself) I'm just curious if anyone else stumbled with problem that I2C address is not 0x3C but 0x3D and driver doesn't work out of the box. Thanks.