[PATCH v3] powerpc: Specify GPIO number base for controller in DT

[Wolfgang Ocker]

On Fri, 2008-10-24 at 11:12 -0600, Grant Likely wrote:
> On Fri, Oct 24, 2008 at 10:54 AM, Anton Vorontsov
> <avorontsov at ru.mvista.com> wrote:
> > On Thu, Oct 23, 2008 at 08:13:00PM +0200, Stefan Roese wrote:
> >> On Thursday 23 October 2008, Wolfgang Ocker wrote:
> >> > The GPIOLIB allows the specification of a base gpio number for a
> >> > controller. That is not possible using OF. Instead, free gpio numbers
> >> > are assigned.
> >> >
> >> > In order to allow static, predefined gpio numbers, a base property in
> >> > the gpio controller node specifies the first gpio number.
> >> >
> >> > v2, v3: added/improved description of base property in doc
> >>
> >> These version descriptions are better placed below the "---" line. And you
> >> should remove the "Re: " from the subject line. Other than this:
> >>
> >> Acked-by: Stefan Roese <sr at denx.de>

> Yeah, I don't like this patch either.  GPIO numbering is a Linux
> internal detail and has no bearing on the hardware description.  If
> you need to know what a particular gpio number is then it should be
> resolved by finding the device tree node; not by trying to fix a GPIO
> controller to a particular number.

Okay, now I think I understand.

I'll try to solve the chip select pin addressing in the spi driver
differently. Thank you guys!

Wolfgang