On Tue, May 12, 2020 at 11:00:15AM -0400, Al Cooper wrote:

Some BRCMSTB USB chips have an XHCI, EHCI and OHCI controller
on the same port where XHCI handles 3.0 devices, EHCI handles 2.0
devices and OHCI handles <2.0 devices. Currently the Makefile
has XHCI linking at the bottom which will result in the XHIC driver
initalizing after the EHCI and OHCI drivers and any installed 3.0
device will be seen as a 2.0 device. Moving the XHCI linking
above the EHCI and OHCI linking fixes the issue.

What happens if all of these are modules and they are loaded in a
different order?  This makefile change will not help with that, you need
to have logic in the code in order to properly coordinate this type of
mess, sorry.

thanks,

greg k-h