[friendzis]

IIUC the issue is not them being unable to implement 2.1 at all, but rather provide specifically open source implementation. They probably could provide a binary blob.

[bobdvb]

That's probably how NVidia did it.

But there's very little software involved in HDMI, it's mostly hardware and a control API.

[friendzis]

Yes, this is exactly what the "proprietary" driver is doing