[U-Boot] Driver Model and DTS Parsing

[Stephen Warren]

On 07/31/2014 03:58 PM, Simon Glass wrote:
> On 31 July 2014 10:56, Simon Glass <sjg at chromium.org> wrote:
...
>> Firstly we need to establish that GPIOs have names and that these should be
>> supported in U-Boot. Without agreement on this point we might not get much
>> further.
>
> Can I please press you on this point, as it is important to establish
> this first.

Oh, you were talking about agreeing with me? I thought this was more of 
a general comment, since you'd indicated earlier that amending the gpio 
to handle names was outside the scope of this patchset, and GPIO names 
are basically only relevant if the user-interface exposes/handles the names.

Well sure, GPIOs obviously have various sets of (controller-relative) 
names and IDs.

There certainly aren't any "global" or "absolute" names though, unless 
you include the controller name/ID (or something derived from it) as 
part of the GPIO's name/ID (either numerically via controller base IDs 
or textually by e.g. prefixing GPIO names with the controller name).

It would be good for any user-visible command/script to be able to 
handle either numeric IDs (either in an absolute space or preferably 
relative to a specified controller) or names.