On 23/09/14 11:35, Thierry Reding wrote: > Well, a display controller is never going to attach to a panel directly. With parallel RGB, that (almost) happens. There's voltage level shifting probably in the middle, but I don't see anything else there. > But I agree that it would be nice to unify bridges and encoders more. It > should be possible to make encoder always a bridge (or perhaps even > replace encoders with bridges altogether). Then once you're out of the > DRM device everything would be a bridge until you get to a panel. What exactly is a bridge and what is an encoder? Those are DRM constructs, aren't they? As I see it, a video pipeline consist of a video source (display controller usually), a chain of encoders (all of which may not be strictly "encoders", they could be level shifters, muxes, ESD protection devices or such), and either a display device like a panel or a connector to outside world. Am I right that in DRM world the encoder is the first device in the display chain after the display controller, and the next is a bridge? That sounds totally artificial, and I hope we don't reflect that in the DT side in any way. Tomi
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