TDA4VL-Q1: Reset register to bypass reboot sequence

Hi Jin,

Let me look into this deeper.

You are asking specifically for cold reset, not warm reset correct?

Additionally, what is the use case for this?

Thanks,

Neehar

Hi Neehar, 

Yes, cold reset, although we would be interested in all possible reset options. 

Regarding use case, we want to implement a workaround for an ongoing bug to directly reset the device from a Linux application without going through the reboot sequence. 

Hi Jin,

The other reset option is warm reset which can be done in software using various methods. Are you using Linux or RTOS?

Jin Lee said:

Regarding use case, we want to implement a workaround for an ongoing bug to directly reset the device from a Linux application without going through the reboot sequence. 

What do you mean by reboot sequence? A cold reset would still follow the SPL or SBL boot flow.

I will check with the power team as triggering a cold reset in software would likely require writing to a PMIC register rather than an SoC register.

Thanks,

Neehar

Hi Jin,

Following up, is this issue still open?

Thanks,

Neehar

Hi Neehar, yes - is there any update regarding direct cold reset? 

Thank you

Jin

Hi Jin,

I can check on this, however, I would like to still clarify the use case.

Both warn and cold reset options would still follow the full SPL and SBL boot flows.

What do you mean by reboot sequence? Which portion are you trying to avoid? Is it simply reboot time?

Thanks,

Neehar

Hi Neehar,

Sorry for confusion, we are not trying to avoid the reboot sequence but rather the SW reset sequence. 

Once the board has been cold reset we are okay to follow the normal boot flows.

Thank you,

Jin