AMDGPU in current issue

Hey-
I'd been messing around with the AMDGPU on current (which I'm aware is very
experimental) and had very few issues with it using a Vega 56 GPU. I
recently swapped to another Vega GPU (Radeon VII) and have issues with the
display not showing anything. Still boots fine, in that I can still enter
commands (i.e. reboot) so it has to be a display issue. I tried searching
for the diff where the firmware was added which I'm certain I saw (for Vega
20) but can't seem to find it in the commit history. Anyone have a fix for
it, and if not, who should I talk to if I wanted to help get it working? I
saw most of the AMDGPU commits have been by @jonathangray if he would be
the best option.
Thanks!