* 3-color led too bright @ 2016-01-30 20:07 Pavel Machek 2016-01-31 0:24 ` Sebastian Reichel 0 siblings, 1 reply; 2+ messages in thread From: Pavel Machek @ 2016-01-30 20:07 UTC (permalink / raw) To: linux-arm-kernel Hi! 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. Does anyone know more? Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html ^ permalink raw reply [flat|nested] 2+ messages in thread
* 3-color led too bright 2016-01-30 20:07 3-color led too bright Pavel Machek @ 2016-01-31 0:24 ` Sebastian Reichel 0 siblings, 0 replies; 2+ messages in thread From: Sebastian Reichel @ 2016-01-31 0:24 UTC (permalink / raw) To: linux-arm-kernel 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160131/b074120e/attachment-0001.sig> ^ permalink raw reply [flat|nested] 2+ messages in thread
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