On Wed, Dec 22, 2021 at 01:19:23PM +0000, Robin Murphy wrote:

On 2021-12-22 13:00, Mark Brown wrote:

quoted

Does the SoC actually support the supply being completely off in
operation?  A lot of devices want everything powered even if idle during
full operation since keeping voltage differentials smaller makes it a
lot easier to design to avoid leakage current type issues at the points
where the different power domains connect.

I don't know TBH - the available documentation doesn't seem to go into quite
that much detail.

In that case I would tend to assume that unless otherwise stated it's
safer to keep the supply enabled when everything else is enabled.  It's
the default thing and so is more likely to be what was designed for and
less likely to result in nasty surprises.