Re: [PATCH v2] media: i2c: imx412: wait for NVM read (T7) before programming mode registers

[Bryan O'Donoghue]

On 12/01/2026 11:50, Wenmeng Liu wrote:
> -- if disable gpiod_set_value_cansleep(imx412->reset_gpio, 1); form
> imx412_power_off, the issue will not happen.

Yeah this is basically what I said in the last email.

The state transition diagram for starting the part will assume reset is 
asserted.

So in power_on() - you need to assert reset prior to powering on and 
clocking the part - which is the eqivalent logic to what you posted above.

The reason you should do this in power_on() is it doesn't assume 
power_off has run first.

power_on should establish the initial conditions required to power on 
the device, in this case, we've established you need to have reset 
asserted first.

---
bod