> Thanks to the combined efforts of mildsunrise and chaos_princess, we discovered that ACE3 has pretty much the same register set as CD3217, only wrapped in a SPMI interface instead of addressed over I2C. Both the SPMI interface and ACE3 itself are now working in Asahi Linux, bringing USB 3.0 and Thunderbolt support to all M3 series devices.

When I got my M3 Pro MBP, I got it with the intention of eventually installing Linux on it. In hindsight I seriously underestimated the amount of effort needed for even partial Linux compatibility, which makes me all the more grateful for the work Asahi contributors have put in! I'll still be keeping macOS installed for iOS dev work(which I plan on doing soonish), but other than that all I really need is a web browser and Ghostty with good battery life.

Fantastic to see the progress and a fascinating detailed write-up.

You have to appreciate the effort Apple puts into security - goes some way to understanding why they won't endorse/support installing an alternative operating system.

Amazing progress as usual. It’s been fun watching just how much a few people can accomplish over the last few years despite working on sometimes unstable sand.

I'm extremely glad to hear that the hypervisor now works on M4! Can't wait to try out Asahi in a year or two.

Yeah, you'll find out that va-api is not a good match for v4l2-requests. It does not pass decoded bitstream to the drivers as is, but pre-computes some things for some codecs, while v4l2-requests mostly expects original information parsed from the bitstream.

https://xff.cz/git/libva-v4l2_request/