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

From	Rob Herring <robh@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches
Date	2016-12-15 16:10 +0100
Message-ID	<sOFPs-7kP-35@gated-at.bofh.it> (permalink)
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On Wed, Dec 14, 2016 at 10:58 AM, Bartosz Golaszewski
<bgolaszewski@baylibre.com> wrote:
> 2016-12-13 20:27 GMT+01:00 Rob Herring <robh@kernel.org>:
>> 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.
>>
>
> It's more of a fixed regulator I suppose. Do you mean adding a new
> compatible to the fixed-regulator binding (e.g. "gpio-power-switch" or
> "simple-power-switch") and then providing an iio driver for toggling
> the switch?

Yes, at least the first part. I view the switch as just a more
specific subtype of a fixed-regulator. Whether an IIO driver is a
separate discussion which is happening.

Rob

P.S. I really don't like compatibles with "simple".

Thread

[PATCH 0/2] iio: GPIO power switch support Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-12-11 23:30 +0100
  [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-12-11 23:30 +0100
    Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven  power switches Rob Herring <robh@kernel.org> - 2016-12-13 20:30 +0100
      Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-12-14 18:00 +0100
        Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-12-15 12:00 +0100
        Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Rob Herring <robh@kernel.org> - 2016-12-15 16:10 +0100
          Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Geert Uytterhoeven <geert@linux-m68k.org> - 2016-12-23 10:10 +0100
            Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power  switches Lars-Peter Clausen <lars@metafoo.de> - 2016-12-23 12:50 +0100
              Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power  switches Jonathan Cameron <jic23@kernel.org> - 2016-12-30 16:10 +0100
    Re: [PATCH 1/2] devicetree: power: add bindings for GPIO-driven power switches Linus Walleij <linus.walleij@linaro.org> - 2016-12-28 14:00 +0100

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