Hi,

Nano pi duo 2 module I2C is not working in kernal Armbian Focal 5.10.21.

 

I have camera OV5640 attached to Nano PI duo 2 via I2C 2 

 

I found my I2C2 is disable how can I enable?

root@nanopiduo2:~# fdtget /boot/dtb/sun8i-h3-nanopi-duo2.dtb /soc/i2c@1c2b400 status
disabled

I found I2C 2 which is connect to camera is not working

root@nanopiduo2:~# ls -l /sys/class/i2c-adapter/
total 0

the I2C detect command and sometimes armbianmonitor does not genetrate the link,

root@nanopiduo2:~# i2cdetect -y 0
Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
root@nanopiduo2:~# i2cdetect -y 1
Error: Could not open file `/dev/i2c-1' or `/dev/i2c/1': No such file or directory
root@nanopiduo2:~# i2cdetect -y 2
Error: Could not open file `/dev/i2c-2' or `/dev/i2c/2': No such file or directory

root@nanopiduo2:~# sudo armbianmonitor -u
System diagnosis information will now be uploaded to Please post the URL in the     

      Please find the image the boot Environment is changes in the device (reffer attachment) but the link file its not changed which is real?

System diagnosis information will now be uploaded to http://ix.io/2Tb2
Please post the URL in the forum where you've been asked for.

 

I have created the user overlays.
That was the issue. problem solved