[RFC PATCH 1/7] drm/msm/dp: fix panel bridge attachment

Dmitry Baryshkov dmitry.baryshkov at linaro.org
Fri Jan 7 05:10:51 UTC 2022


On 07/01/2022 06:37, Stephen Boyd wrote:
> Quoting Dmitry Baryshkov (2022-01-06 18:01:26)
>> In commit 8a3b4c17f863 ("drm/msm/dp: employ bridge mechanism for display
>> enable and disable") the DP driver received a drm_bridge instance, which
>> is always attached to the encoder as a root bridge. However it conflicts
>> with the panel_bridge support for eDP panels.
> 
> Can you elaborate here? How does it conflict? Could be as simple as "it
> attaches before the panel bridge can attach to the root" or something
> like that.

Actually it would be the other way around: panel bridge attaching before 
the "dp" one. But yes, you got the idea. I'll extend the patch's 
description.

>> Change panel_bridge
>> attachment to come after dp_bridge attachment.
>>


-- 
With best wishes
Dmitry


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