Hi, I tried the V4L2 driver with Buster which worked OK on a Pi4 4 GB then I tested Bullseye with the legacy mode and the same V4L2 driver ( veyecam2m ver 5.10.63) and that worked OK too.
I was previously testing with a Pi 3A which I would like to work but that does seem to have a problem with the v4L2 driver with both OS's.
Oh, my mistake I only downloaded veye_mipi_i2c.sh, I didn't realise it called i2c_read, i2c_write.
Sorry I will download all files tomorrow and try again.