Comment by jorvi

Microsoft is pushing hard for UEFI + ACPI support on PC ARM boards. I believe the Snapdragon X2 is supposed to support it.

That still leaves the usual UEFI + ACPI quirks Linux has had to deal with for aeons, but it is much more manageable than (non-firmware) DeviceTree.

The dream of course would be an opensource HAL (which UEFI and ACPI effectively are). I remember that certain Asus laptops had a microstutter due to a non-timed loop doing an insane amount of polling. Someone debugged it with reverse engineering, posted it on GitHub, and it still took Asus more than a year to respond to it and fix it, only after it blew up on social media (including here). With an opensource HAL, the community could have introduced a fix in the HAL overnight.