Kevin Quigley <ke...@kquigley.co.uk> writes: > Hi, > > When we talk about control bus enable and video transfer enable for > DSI, there is a mode in which control commands can be sent, > interleaved with the video. This is often done at the end-of-frame > and/or end of line. I've seen this handled in some other DSI device > drivers. In these cases, the driver has to look at the frame timing > in the video and carefully select the number of control bytes which > can be sent during the blanking periods. The number of bytes which > can be sent, is very much dependant on the panel-size and clock > frequencies... (which determines the blanking time). I'm not sure how > widely this is a feature in the DSI encoder HW, and/or implemented > purely in the drivers.
That scheduling is done by the VC4 DSI encoder. > To conclude: I think that DSI encoder devices need to be able to > support sending control data (LPDA) - concurrently with video frames. I believe that should work already.
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