[U-Boot] [PATCH 09/17] mx6sabresd: convert to DM_VIDEO

Anatolij Gustschin agust at denx.de
Mon Sep 16 19:50:28 UTC 2019

Hi Fabio,

On Mon, 16 Sep 2019 21:21:38 +0200
Anatolij Gustschin agust at denx.de wrote:

>Hi Fabio,
>On Mon, 16 Sep 2019 15:18:34 -0300
>Fabio Estevam festevam at gmail.com wrote:
>> > +CONFIG_DM_VIDEO=y    
>> I am running the latest tree from Stefano and I do not have LVDS
>> output after this patch.
>> If I revert it, then LVDS output is normal again.
>> Any ideas?  
>Most probably this is because there was no user of the video
>device when booting and therefore the video driver was not
>probed/bound. Please try do display some bitmap with bmp
>command or try to switch to the video console by command
>"setenv stdout vidconsole0". Then, the video device will be
>probed and you should see the LVDS output.

There is an example how boards can enforce using video device
when booting, e.g. for displaying splash image. Please see commit
f0be8ff45fb8 (ARM: imx: m53menlo: Convert to DM VIDEO).

I'm not happy that it requires to extend the board code for this
and would prefer if it could be in common code. But this is what
we have now.


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