Hi Chris, as you are working on the v4... ... > + if (drv_data->reset_gpio) { > + usleep_range(reset_duration, reset_duration + 10); I'm not against this, but it's not optimal unless we know more or less what to expect from reset_duration. Do we have a rough idea of what reset_duration is? If we don't then you could consider using a generic "fsleep(reset_duration);" Would it work? Rest looks good. Andi