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SubjectRe: [PATCH 4.19 014/639] leds: tlc591xx: update the maximum brightness
On Fri 2020-01-24 10:23:04, Greg Kroah-Hartman wrote:
> From: Jean-Jacques Hiblot <jjhiblot@ti.com>
>
> commit a2cafdfd8cf5ad8adda6c0ce44a59f46431edf02 upstream.
>
> The TLC chips actually offer 257 levels:
> - 0: led OFF
> - 1-255: Led dimmed is using a PWM. The duty cycle range from 0.4% to 99.6%
> - 256: led fully ON
>
> Fixes: e370d010a5fe ("leds: tlc591xx: Driver for the TI 8/16 Channel i2c LED driver")
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
> Signed-off-by: Pavel Machek <pavel@ucw.cz>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Its a new feature, really and quite unusual one: 257 brightness levels
is not usual. It is theoretically safe, but...

Lets not do that for -stable.

(I'm a LED maintainer).

Best regards,
Pavel

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