Hi Sarah, I googled for firmware and the latest i have found is Firmware Version 3.0.2.5.0.8 Applying it in xhci debug, the firmware reported changed from 30.21 to 30.25 The bandwidth error still occurs with this firmware. -- Sander Friday, November 5, 2010, 3:53:03 PM, you wrote: > On Thu, Nov 04, 2010 at 10:53:21AM -0400, Alan Stern wrote: >> On Thu, 4 Nov 2010, Sarah Sharp wrote: >> >> > But the real issue is that the UVC driver can use less bandwidth than >> > the device specifies in its endpoint descriptors, but there's no way for >> > the xHCI driver to know that. It can only use the interval and max >> > packet size advertised in the endpoint descriptor. There needs to be a >> > new API for USB video drivers to tell the xHCI driver what the real >> > bandwidth expectations are. Until then, your webcam won't work under >> > xHCI. >> >> But this same objection applies when the camera is plugged into a >> USB-2.0 controller. Since it works then, it should also work with >> xHCI. > Yes, this USB 2.0 device should work under the NEC xHCI host controller > now that we have the input context straightened out. It's probably a > hardware bug in the host. I'll email NEC about it, but it's likely they > have fixed this in a later firmware version. > Sarah Sharp -- Best regards, Sander mailto:linux@xxxxxxxxxxxxxx -- 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
