On Wed, Mar 13, 2013 at 03:34:15PM +0100, jean-philippe francois wrote: > 2013/3/12 jean-philippe francois <jp.francois@xxxxxxxxxx>: > > 2013/3/12 jean-philippe francois <jp.francois@xxxxxxxxxx>: > >> 2013/3/12 Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>: > >>> On Mon, Mar 11, 2013 at 01:21:48PM +0100, jean-philippe francois wrote: > >>>> USB3 host is an asmedia ASM1042. > > Update : > I have been able to test this on an intel XHCI, and it works fine, > except for some > difference in the treatment of short iso packet in the EHCI and XHCI path. > > On the ASM1042, it also work when the endpoint descriptor is set to > 3x1000, bInterval = 2. > > But it does not with a iso endpoint descriptor of 3x1000, bInterval = 1. That's odd. Can you recompile the xHCI driver with CONFIG_USB_XHCI_HCD_DEBUGGING and CONFIG_USB_DEBUG turned on, and send me dmesg, starting from just before you plug in your device and start a video stream. Please capture trying to use both the non-working endpoint setting, and the working setting. Sarah Sharp -- 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
