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Groups > linux.kernel > #1457262

Re: [RFC] User-defined leds

From Pavel Machek <pavel@ucw.cz>
Newsgroups linux.kernel
Subject Re: [RFC] User-defined leds
Date 2016-08-05 22:00 +0200
Message-ID <s2TrI-3xr-19@gated-at.bofh.it> (permalink)
References <rYSXg-7Yy-25@gated-at.bofh.it> <rYT6V-81R-3@gated-at.bofh.it> <s2TrI-3xr-13@gated-at.bofh.it> <s2TrH-3xr-11@gated-at.bofh.it>
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On Fri 2016-08-05 14:54:33, David Lechner wrote:
> On 08/05/2016 02:51 PM, Pavel Machek wrote:
> >
> >Could the device tree be used to bind LED driver to otherwise unused
> >gpio?
> 
> There is already a leds-gpio driver that does this.
> 
> https://www.kernel.org/doc/Documentation/devicetree/bindings/leds/leds-gpio.txt

Yeah, I know, that's why I suggested it :-).

What might be missing: simple way to attach leds-gpio driver to
hardware on non-devicetree machines, and perhaps teaching leds-gpio
special gpio value "no gpio" meaning ... that hardware is not actually
updated.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Re: [RFC] User-defined leds Pavel Machek <pavel@ucw.cz> - 2016-08-05 22:00 +0200
  Re: [RFC] User-defined leds David Lechner <david@lechnology.com> - 2016-08-05 22:00 +0200
    Re: [RFC] User-defined leds Pavel Machek <pavel@ucw.cz> - 2016-08-05 22:00 +0200

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