Re: [PATCH v7 14/33] crypto: rockchip: handle reset also in PM

[LABBE Corentin]

Le Mon, Jun 20, 2022 at 12:04:24PM +0100, John Keeping a écrit :
> On Sun, May 08, 2022 at 06:59:38PM +0000, Corentin Labbe wrote:
> > reset could be handled by PM functions.
> 
> Is there any further rationale for this?
> 
> After this change there is no longer a guaranteed reset pulse on probe
> since the reset control may already be de-asserted.  This is normally
> the most important case for a reset as it's the only time when the state
> of the hardware is unknown.
> 
> The original use of devm_add_action_or_reset() seems a bit weird already
> since there doesn't seem to be any need to assert reset when the driver
> is unloaded.
> 

I am not an hw engineer, so my knowledge on reset is low.
So why not having a reset pulse on probe is a problem ?

Do you mean I must put reset asserted on probe ?