On Thu, Jun 13, 2013 at 09:29:38AM -0700, Tony Lindgren wrote:

* Linus Walleij [off-list ref] [130613 08:35]:

quoted

No. If we go down that road *anything* that is connected to a
pad becomes part of the pinctrl subsystem, then pinctrl-single
becomes some kind of hardware abstraction or BIOS, and that
is *not* the intent. It is only supposed to deal with the bits
there that are 100% related to what pinctrl does, nothing else.

Sounds like the way to go is to do a standalone regulator driver that
optionally uses pinctrl-single,bits. But only for the bits in the PBIAS
register that are 100% related to pinctrl.

In any case the PBIAS regulator driver should be a separate driver
as it may need to be a child of the SCM driver for PM needs in the
future.

This all seems sensible to me.