VC4 DRM

[Eric Anholt]

Sergey Suloev <ssuloev at orpaltech.com> writes:

> Eric, Noralf,
>
> could either of you answer a question about Vc4 DRM, please ?
>
> I am trying to connect MIPI DSI display to VC4 but it isn't showing 
> anything. I have noticed
> that the DSI host  transfer() method vc4_dsi_host_transfer gets called 
> for the commands that
> I am sending from my panel driver, but not for pixel data.
>
> My question: are pixel data normally transferred the same method within 
> vc4_dsi driver
> or any "behind the scene" way ?

The transfer function isn't used for pixel data in video mode.  The vc4
panel has never been used for command mode panels, so if you have one of
those it will probably be extra work.
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