Re: [PATCH 1/7] gpiolib: gpiolib-of: Implement device tree gpio-names based lookup

[Alexandre Courbot]

On Wed, Apr 23, 2014 at 12:02 AM, Linus Walleij
<linus.walleij@xxxxxxxxxx> wrote:
> On Tue, Apr 15, 2014 at 8:41 AM, Chen-Yu Tsai <wens@xxxxxxxx> wrote:
>
>> This patch provides of_get_gpiod_flags_by_name(), which looks up GPIO
>> phandles by name only, through gpios/gpio-names, and not by index.
>>
>> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
>
> Like Alexandre I have no strong opinion on this alternative scheme.

Yeah this new lookup scheme probably does no harm, but I think it
should be a little bit more motivated as it is, after all, introducing
more potential confusion for DT users.

It does not look like this new lookup scheme is necessary to Chen-Yu's
patchset and that he could as well have used the current one. Right
now there is only one way to define GPIOs - if we introduce a second
one, then which one should new DT users choose? Which one looks
better? I can already endless fights taking place over this.

Does this new lookup help with some of the existing problems we have
like ACPI/DT lookup compatibility?

I just need to be given one practical reason to give my ack.

Alex.
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