As I eagerly await the preproduction board, I figure it would be a good idea to touch base on what needs doing on the software side.
IIUC now that DRM support for the A20 is in mainline (well, not quite there yet, but it's in linux-next), the next thing is video decoding, I think. There's currently work going on for that up at https://github.com/free-electrons/linux-cedrus, so help would be welcome there.
Stefan "who doesn't know if the proprietary binary-blob MALI driver currently works with mainline Linux"