On Mon, 20 Sep 2010, Martin Schiller wrote: > > Some facts: > > - The problem only occurs when using EHCI with the USB-Ports from the CS5536. > > - When I rmmod the ehci-hcd and just use ohci, everything works well. > > - When I use EHCI with another USB 2.0 PCI-Controller on the same mainboard, everything works well. > > > > I can also reproduce this on 3 different mainboards from different manufacturers, which all use this same chipset. > > So this must have something to do with the CS5536 EHCI combination. > I've also tried the same software on an Intel Atom platform -> No problems. > > I don't know if there are also problems with other OS's. > Haven't found any message about this on the web. Maybe nobody has run across it before. > > Have you checked with the chipset manufacturer to see if they have > > published any silicon errata that could explain this? > > > > Alan Stern > > > Found only this type of errata, where I haven't found anything interesting for me: > > http://support.amd.com/us/Embedded_TechDocs/34472D_CS5536_B1_specupdate.pdf Although a lot of serious problems are listed, none of them seem to be relevant. Perhaps you should try getting in touch with AMD; it's possible they can figure out what's going on. At the moment we don't have any useful clues. 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
