On Mon, Mar 30, 2015 at 02:56:40PM -0400, Alan Stern wrote: > On Mon, 30 Mar 2015, Johannes Stezenbach wrote: > > > > Judging by your high-speed log, it looks like the host controller is > > > not sending out the Start SPLIT transactions the way it should. > > > > Yes, it happens consistently that the host send two SPLIT OUT > > packets in the same microframe. So that explains the cause > > of the issue, the question is now if there is a workaround, > > but my expectations are low since the musb split packet handling > > is all done in hardware. > > Is there perhaps a known erratum that mentions this? It seems like a > pretty serious problem, the sort of thing anyone would notice the first > time they tried to play audio through a high-speed hub. It is not listed in the AM335x errata document: http://www.ti.com/product/AM3359/technicaldocuments#doctype3 Probably it is not a very common use case, at least I couldn't find any public mention of this issue. Johannes -- 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
