The PWM is broken at RK3288

Heiko Stübner heiko at
Tue Oct 25 05:58:11 PDT 2016

Hi Randy,

Am Dienstag, 25. Oktober 2016, 20:47:49 schrieb Randy Li:
>    Recently, paulk told me that he meet a problem with PWM backlight at
> rk3288, I do a test at EVB board a few minutes age, it is true. The
> kernel 4.4 would work fine. So the pwm driver at next-20161020 maybe
> broken. It is too late, so I have no time to confirm whether the PWM1
> would have the same problem.
>    I would look into it in the other day and see whether I could do
> something for that.

just yesterday I booted a 4.9-rc2 on my rk3288-veyron-pinky Chromebook and the 
display (backlight supplied by the pwm) was still working correctly. I haven't 
tested any next-kernels yet though, so maybe something broke there.


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