Re: [PATCH net-next v2 8/8] net: pse-pd: Add PD692x0 PSE controller driver

[Mark Brown]

On Thu, Dec 21, 2023 at 04:36:10PM +0100, Köry Maincent wrote:
> Mark Brown <broonie@xxxxxxxxxx> wrote:

> > OK...  I mean, if they're not using the regulator framework I'm not sure
> > it has much impact - there are plenty of internal regulators in devices
> > already so it wouldn't be *too* unusual other than the fact that AFAICT
> > this is somewhat split between devices within the subsystem?  Neither of
> > the messages was super clear.

> PSE Power Interface (which is kind of the RJ45 in PSE world) have similar
> functionalities as regulators. We wondered if registering a regulator for
> each PSE PI (RJ45 ports) is a good idea. The point is that the PSE controller
> driver will be its own regulator consumer.
> I can't find any example in Linux with such a case of a driver being a provider
> and a consumer of its own regulator. This idea of a regulator biting its own
> tail seems weird to me. Maybe it is better to implement the PSE functionalities
> even if they are like the regulator functionalities.

Is it at all plausible that a system (perhaps an embedded one) might use
something other than PSE?

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