Swift Geek (Sebastian Grzywna) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57307 )
Change subject: mb/asrock/e350m1: Enable USB on mPCIe ......................................................................
Patch Set 1:
(1 comment)
Patchset:
PS1: Tested on E350M1/USB3 with ath3k as full speed device, and a pendrive as a high speed device.
On master (with CB:56121) reverted it's visible in grub, USB appears to be broken in linux on this board since CB:38564 according to my limited testing. Applied on top of 9a5d6e958f4ff9fd35439bf6c6f37c852725592c works perfectly fine in linux.