Yes it did , I think I have to modify the source code of pwm-sun4i and init 
it to 100% duty cycle , is there any easier solution ?

On Monday, March 20, 2017 at 6:25:49 AM UTC+2, Icenowy Zheng wrote:
>
>
>
> 20.03.2017, 04:21, "Eyad Majali" <eyad....@gmail.com <javascript:>>: 
> > I did these changes before I know about the patch to prevent complete 
> lcd turn off , yes I'm on 4.11-rc , the problem is mainly with pwm-sun4i 
> > when its enabled alone without pwm_bl the screen brightness is very low, 
> enabling pwm_bl doesnt solve the problem until i rmmod it the load it again 
>
> Does it really prevented complete LCD blacklight turn off on your tablet? 
> At least it worked on my A33 ;-) 
>
> > On Sunday, March 19, 2017 at 6:29:35 PM UTC+2, Icenowy Zheng wrote: 
> > 
> >> 20.03.2017, 00:08, "Quentin Schulz" <quentin...@free-electrons.com>: 
> >>> Hi, 
> >>> 
> >>> On 19/03/2017 15:59, Eyad Majali wrote: 
> >>>>  Hi, 
> >>>>  pwm is configured in dtsi , when the module loads screen brightness 
> >>>>  decrease to minimum ( barely sees anything) how to fix that ? 
> >>>>  also when i enable pwm-bl it turns off the screen completely , but 
> when 
> >>>>  i removed the enable-gpios the result was the same with pwm-sun4i 
> alone but 
> >>>>  if i rmmod pwm-bl and then modprobe pwm-bl it will load the default 
> >>>>  brightness level correctly 
> >>>>  any help is apreciated , Thanks 
> >>> 
> >>> I think this patch can help you: 
> https://patchwork.kernel.org/patch/9631655/ 
> >> 
> >> P.S. are you using 4.11-rc now? 
> >> 
> >> This patch only takes effect on 4.11-rc. 
> >> 
> >>> 
> >>> Quentin 
> >>> 
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> >>> 
> >>> -- 
> >>> Quentin Schulz, Free Electrons 
> >>> Embedded Linux and Kernel engineering 
> >>> http://free-electrons.com 
> >>> 
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