[RFC 2/2] ARM:Tegra: Device Tree Support: Initialize audio card gpio's from the device tree.

[Benjamin Herrenschmidt]

On Mon, 2011-05-30 at 15:01 +0800, Mark Brown wrote:
> On Sun, May 29, 2011 at 08:18:09PM -1000, Mitch Bradley wrote:
> 
> > I'm currently dealing with an SoC that has over a hundred GPIOs.
> > Whatever we choose, I think it should be able to handle an insane
> > number of GPIOs without getting any more cumbersome that is
> > necessary.
> 
> This is *consumer* side GPIOs, not bindings for the device providing the
> GPIOs.  If a single device needs to use hundreds of GPIOs I'd expect
> many of them will be block functions so you'd have a binding with an
> array for things like "databus" and "addrbus".

Yes. Agreed. The producer remains identified by phandle/gpio#, so it's
just a naming thing on the consumer side.

So what are the options ?

 - gpio-xxxx = < ... > properties

 - existing binding, along with an optional gpio-names string list

 - anything else ?

Cheers,
Ben.