[U-Boot] WIP for SPI

[Jon Loeliger]

>> And I think I am saying that we already *have* it generalized for
>> the GPIOs but only if we remove that renumbering function!
>>
>> Consider again that the U_CLASS lookup of a GPIO simply matches
>> versus the range in each uclass data (gpio base and count).  That search
>> doesn't care about their order within the UCLASS_GPIO list.
>>
>> (Never mind that the renumbering breaks the association of the device
>> base register and pin ranges as set up by the bind/probe code!)
>
> I wonder if we could do something similar then, where there is a
> default numbering if none is provided, but the GPIO devices are able
> to 'request' particular number ranges?

I think we are talking past each other now.  Isn't that already in place?
One can already register a device with a range in the UCLASS so
that the lookup happens and matches to a particular device instance.
(But only assuming they are NOT renumbered.)

What am I missing here?

Thanks,
jdl