Thread (17 messages) 17 messages, 8 authors, 2017-01-02

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

From: Rob Herring <hidden>
Date: 2016-12-15 15:06:00
Also in: linux-gpio, linux-iio, linux-pm, lkml

On Wed, Dec 14, 2016 at 10:58 AM, Bartosz Golaszewski
[off-list ref] wrote:
2016-12-13 20:27 GMT+01:00 Rob Herring [off-list ref]:
quoted
On Sun, Dec 11, 2016 at 11:21:44PM +0100, Bartosz Golaszewski wrote:
quoted
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".
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