At least for M1 they got it working. Seems to be in testing phase now. Promised to come soon.
https://media.ccc.de/v/39c3-asahi-linux-porting-linux-to-app...
Is that display port over USB-C? That’s the main showstopper for me to use Asahi on my M1 Pro MBP.
That's great. The only reason I haven't got it on my M1 Air yet.
From that video "Our goal is to make this [dp-altmode] generally available to all people sometime early in the next year [2026]"