On July 28, 2018 1:21 AM, Tinker <[email protected]> wrote: > Hi Marcus, > > Thank you for following up. > > First re any XHCI bugs: .. > Second, re superspeed mode: > > stsp@ pointed out about a year ago that the XHCI driver only supports, > I think it is, 1gbps aggregate speed per USB hub presently, 5gbps aka > "superspeed". > > This might not be a very high priority, maybe except on some cheapo > ARM64:s that have only USB 3.
Wait, there is mentioning of superspeed in xhci.c . https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/dev/usb/xhci.c?rev=1.87&content-type=text/x-cvsweb-markup Also xhci(4) says all since 2014 that "xHCI controllers support all USB 3.0, 2.0 and 1.x device speeds.". http://man.openbsd.org/xhci https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/share/man/man4/xhci.4 This shows that there is something I have misunderstood about XHCI's speed characteristics, I wonder what. Natural thing would be to ask stsp. Tinker
