Re: [PATCH 2/3] dt-bindings: regulator: Add regulator-output bindingg

[Zev Weiss]

On Mon, Oct 31, 2022 at 08:45:34AM PDT, Mark Brown wrote:
> On Fri, Oct 28, 2022 at 12:44:50PM -0700, Zev Weiss wrote:
> > On Fri, Oct 28, 2022 at 08:51:54AM PDT, Mark Brown wrote:
>
> > > We don't turn things off on reboot?  We don't do anything in particular
> > > on reboot...
>
> > Okay, perhaps not on reboot specifically, but the userspace-consumer driver
> > has a regulator_bulk_disable() in its .remove function, so it would be
> > triggered at least by a module unload (which is sort of why I ended up with
> > the "when software relinquishes control" wording in the patch).  If we're
> > going to continue with the plan of using that driver for this functionality
> > (which seems overall quite reasonable to me), we need a way to express that
> > that must not happen on this hardware.
>
> Ah, that would be the test driver not intended to be used in production
> then...  That shouldn't be a blocker for the DT binding, and if there's
> a different compatible string for this application then we can either
> make the userspace consumer do something different based on that
> compatible string or have a new driver which does something more
> sensible and perhaps has a better userspace ABI.  Either way so long as
> we can tell the thing being described is a BMC output from the DT
> binding I think we can leave it up to the OS to do something constructive
> with that rather than trying to control the specific behaviour in the
> binding.

Ah, alright -- that seems like a nice (obvious in retrospect, of course) 
solution that should work well I think.  I'll post a v2 with that 
approach soon.


Thanks,
Zev