Ryzen 9 7900 Raphael options and amdgpu status?

[Paul Ripke <stix%stix.id.au@localhost>]

So I got myself a shiny new machine - too new, apparently, since our
current amdgpu doesn't support it. All I've managed to get working
is wsfb @1024x768 (ahh, 'gop 0', now 1680x1050), which is (was) sad.

I see our amdgpu is from linux-drm-v5-6-rc3, it looks like this newer
gpu is supported in 6.1. What's involved in the update? Is it documented
anywhere? Is anyone looking at it?

For now, software rendering is still remarkably usable on this machine,
but is still likely O(100x)++ slower than it could be.

-- 
Paul Ripke
"Great minds discuss ideas, average minds discuss events, small minds
 discuss people."
-- Disputed: Often attributed to Eleanor Roosevelt. 1948.