There's nothing to fix, the problem is patents. A true fix would be getting rid of HDMI and only supporting DP.

It's not known either way yet, but unless they offloaded it to a separate firmware like Nvidia or Intel, it's not possible for them to do in Linux due to HDMI patents. The way the other vendors avoided this is to use a separate component that does everything internally, so none of the code is in the drivers. AMD doesn't do that historically, and thus can only support such features with closed source drivers/OS.

Theoretically they could avoid binary blobs by including a dedicated conversion chip on the board, and still using DP internally, but that adds production costs and makes things like freesync more challenging

displayport is dtill there hopefully