linux-kernel - Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches

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Message-ID: <20161213192712.gbaw4t4awayybnta@rob-hp-laptop>
Date:   Tue, 13 Dec 2016 13:27:12 -0600
From:   Rob Herring <robh@...nel.org>
To:     Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Mark Rutland <mark.rutland@....com>, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kevin Hilman <khilman@...libre.com>,
        Patrick Titiano <ptitiano@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        linux-gpio@...r.kernel.org, Sebastian Reichel <sre@...nel.org>,
        linux-pm@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven
 power switches

On Sun, Dec 11, 2016 at 11:21:44PM +0100, Bartosz Golaszewski wrote:
> Some boards are equipped with simple, GPIO-driven power load switches.
> An example of such ICs is the TI tps229* series.

How is this different than a GPIO regulator? The input and output 
voltages just happen to be the same. I could be convinced this is 
different enough to have a different compatible, but it somewhat seems 
you want to use this for IIO, so you are creating a different binding 
for that usecase.

Rob