I believe the Asahi team has them all submitted via the various relevant maintainers
and they are working their way through the groups. Some patches make significant
changes and there is obviously discussion about whether they need to be reworked
before being passed up.
That said there was this recently on the 5.19 kernel release from Linus Torvalds...
"...
On a personal note, the most interesting part here is that I did the
release (and am writing this) on an arm64 laptop. It's something I've
been waiting for for a _loong_ time, and it's finally reality, thanks
to the Asahi team. We've had arm64 hardware around running Linux for a
long time, but none of it has really been usable as a development
platform until now.
..."