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Groups > linux.kernel > #1322528

Re: 3-color led too bright

From Sebastian Reichel <sre@kernel.org>
Newsgroups linux.kernel
Subject Re: 3-color led too bright
Date 2016-01-31 01:30 +0100
Message-ID <qWO3U-3pb-3@gated-at.bofh.it> (permalink)
References <qWK0i-AJ-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi Pavel,

On Sat, Jan 30, 2016 at 09:07:50PM +0100, Pavel Machek wrote:
> The indicator 3-color LED in mainline kernel seem to be a bit too
> bright. .. more bright to look at comfortably. I believe it is also
> brighter than in original maemo... I believe I've seen note somewhere
> that hardware may allow too much current to the 3-color led damaging
> hardware... but I can't find the link now.

Safe current limits for the leds are configured in the DTS
(led-cur and max-cur) and can be checked in sysfs. I remember
testing the safety limits when I added them to DT, but the
driver has changed a bit since then.

-- Sebastian

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Thread

3-color led too bright Pavel Machek <pavel@ucw.cz> - 2016-01-30 21:10 +0100
  Re: 3-color led too bright Sebastian Reichel <sre@kernel.org> - 2016-01-31 01:30 +0100

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