Hi, On 2/23/22 16:23, Andrew Lunn wrote: >> As Russell asked, I'm also really interested if someone has a solution >> to reuse device-tree description (overlays ?) to describe such >> hardware. However, the fact that CONFIG_OF isn't enabled on x86 config >> seems a bit complicated on this side. > > It does work, intel even used it for one of there tiny x86 SoCs. Maybe > it was Newton? IIRC those SoCs did not use standard EFI/ACPI though, but rather some other special firmware, I think it was SFI ? This is not so much about the CPU architecture as it is about the firmware/bootloader <-> OS interface. Note I'm not saying this can not be done with EFI/ACPI systems, but I think it has never been tried. Regards, Hans