On Fri, 5 Mar 2010, Crane Cai wrote: > On Fri, Mar 05, 2010 at 09:38:28AM -0500, Alan Stern wrote: > > > > That doesn't do me any good, since I don't have access to the xHCI > > spec. > > If you need the spec, an agreement is needed with intel. > http://www.intel.com/technology/usb/xhcispec.htm > And if you read it, this concept may be easy to describe. Or Sarah have more > clear word. > Now the chart tells us there is only one root hub with 2 different kind ports, > and combine them in 1 physical connector. The xhci-hcd driver now export one > root hub with different kind ports, not 2 different kind root hub. I'd like to hear what Sarah thinks about this. Doing things the way you describe is bad, because it forces the hub driver to treat USB-3.0 root hubs differently from USB-3.0 external hubs. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
