Enabling pmbus power control

[Guenter Roeck]

On Tue, Mar 30, 2021 at 07:02:00PM +0100, Mark Brown wrote:
> On Tue, Mar 30, 2021 at 12:56:56PM -0500, Zev Weiss wrote:
> 
> > Okay, to expand a bit on the description in my initial message -- we've
> > got a single chassis with multiple server boards and a single manager board
> > that handles, among other things, power control for the servers.
> > The manager board has one LM25066 for each attached server, which acts as
> > the "power switch" for that server.  There thus really isn't any driver to
> > speak of for the downstream device.
> 
> This sounds like you need a driver representing those server boards (or
> the slots they plug into perhaps) that represents everything about those
> boards to userspace, including power switching.  I don't see why you
> wouldn't have a driver for that - it's a thing that physically exists
> and clearly has some software control, and you'd presumably also expect
> to represent some labelling about the slot as well.

Absolutely agree.

Thanks,
Guenter