Has anyone done this? Is there a way to do this in any form with NetBSD (in the kernel?) .
On Tue, Jul 20, 2021 at 1:44 AM Michael van Elst <mlel...@serpens.de> wrote: > > tgru...@gmail.com (Todd Gruhn) writes: > > >Is it possible to tell the system to access port-x as a USB-3 or USB-2 port > >? > > You could probably add a feature to disable USB-3 functionality for a port. > > On older systems the xhci controller only supports USB-3 and the USB-2 > functionality > is provided by a separate ehci controller. Shouldn't be difficult to disable > USB-3 > there. > > On newer systems the xhci controller learned to talk USB-2 as well. I'm not > sure > if you can disable USB-3 there without disabling USB-2 at the same time. >
