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

Alexandre Courbot gnurou at gmail.com
Tue Apr 15 23:12:26 PDT 2014

On Tue, Apr 15, 2014 at 11:20 PM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> Hi Chen-Yu,
> On Tue, Apr 15, 2014 at 02:41:35PM +0800, Chen-Yu Tsai 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.
> IIRC, gpios only uses the *-gpios properties, and not gpios/gpio-names
> pattern seen on various other things.
> Is it some new property you introduce? If so, please add it to the
> documentation.
> Now, I'm not sure that having two distinct representations of GPIOs in
> the DT is a good thing. Yes, it's looking odd compared to other
> similar bindings, but it's what we have to deal with.

Mmmm I *think* I somehow remember a discussion about this topic
recently, but I cannot find it. Maybe Chen-yu could point us to the
conclusion of this discussion and the rationale for (re)implementing
named GPIOs this way?

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