LCDC failure of the stable v3.12 kernel for armadillo800-eva

LCDC failure of the stable v3.12 kernel for armadillo800-eva

[Nguyen Viet Dung]

Hi Laurent-san,

I have tested the stable v3.12 kernel for armadillo800-eva board.
And it had a error relates LCDC.

error detail:
-----------------
can not display a bitmap image on LCD screen.
when boot the board,boot log is can not display on LCD screen too.

Cause:
---------
kernel that had above error:up tream v3.12-rc1....stable v2.12.0
Error is generated in the following patch.
[d58226a ARM: shmobile: armadillo800eva: Add backlight support]

Please consider this error if you have time.

Best regards,
Nguyen Viet Dung

Re: LCDC failure of the stable v3.12 kernel for armadillo800-eva

[Laurent Pinchart]

Hi Nguyen-san,

(I apologize in advance if this is the wrong way to address you, please let me 
know if I should have written Dung-san instead).

On Wednesday 13 November 2013 15:16:05 Nguyen Viet Dung wrote:
> Hi Laurent-san,
> 
> I have tested the stable v3.12 kernel for armadillo800-eva board.
> And it had a error relates LCDC.
> 
> error detail:
> -----------------
> can not display a bitmap image on LCD screen.
> when boot the board,boot log is can not display on LCD screen too.
> 
> Cause:
> ---------
> kernel that had above error:up tream v3.12-rc1....stable v2.12.0
> Error is generated in the following patch.
> [d58226a ARM: shmobile: armadillo800eva: Add backlight support]

I will try to fix that. The LCDC hardware is supported by two drivers, an 
FBDEV driver (drivers/video/sh_mobile_lcdcfb.c) and a DRM driver 
(drivers/gpu/drm/shmobile). Could you please tell which driver you're using ?
 
> Please consider this error if you have time.

-- 
Regards,

Laurent Pinchart

Re: LCDC failure of the stable v3.12 kernel for armadillo800-eva

[Nguyen Viet Dung]

Hi Laurent-san,

On 11/15/2013 11:35 AM, Laurent Pinchart wrote:
> Hi Nguyen-san,
>
> (I apologize in advance if this is the wrong way to address you, please let me
> know if I should have written Dung-san instead).
Please call me by Dung
>
> On Wednesday 13 November 2013 15:16:05 Nguyen Viet Dung wrote:
>> Hi Laurent-san,
>>
>> I have tested the stable v3.12 kernel for armadillo800-eva board.
>> And it had a error relates LCDC.
>>
>> error detail:
>> -----------------
>> can not display a bitmap image on LCD screen.
>> when boot the board,boot log is can not display on LCD screen too.
>>
>> Cause:
>> ---------
>> kernel that had above error:up tream v3.12-rc1....stable v2.12.0
>> Error is generated in the following patch.
>> [d58226a ARM: shmobile: armadillo800eva: Add backlight support]
> I will try to fix that. The LCDC hardware is supported by two drivers, an
> FBDEV driver (drivers/video/sh_mobile_lcdcfb.c) and a DRM driver
> (drivers/gpu/drm/shmobile). Could you please tell which driver you're using ?
When test LCDC,I have used  the driver of drivers/video/sh_mobile_lcdcfb.c.

Best regards,
Nguyen Viet Dung.