> Why they use uAB connector I can only assume is because of the smaller > size then standard-A, and because they are not interested in standards. That actually sounds remarkably characteristic of Microsoft. > So 0f35 is indeed is the xHCI host controller. Baytrail boards that > have the device controller have second USB controller with device id > 0f37. Any idea if the device controller is wholly absent, or simply not connected/enumerated? On Tue, Feb 10, 2015 at 1:39 AM, Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> wrote: > Hi Joseph, > > On Mon, Feb 09, 2015 at 10:27:53AM -0600, Felipe Balbi wrote: >> On Sun, Feb 08, 2015 at 02:51:16PM -0700, Joseph Kogut wrote: >> > I have an Intel Valleyview/Baytrail based device (specifically a Dell >> > Venue 8 Pro 5830) that I'd like to be able to use the Linux Gadget >> > subsystem on, but it seems that the controller isn't currently >> > supported. I'm running the 3.19rc7 mainline release. >> > >> > The device has a micro AB connector. Based on my experiences with a >> > similar (Merrifield) platform using Intel's own out of tree patchset >> > that had working DRD support using a modified DWC3 driver, I suspected >> > that the Baytrail platform I'm working on would also use the DWC3 >> > driver. > > Unfortunately Dell Venue 8 Pro 5000 Series tablets do not have USB > device controller. You only have the xHCI host controller. In fact, > this is the case with basically all new Windows tablets. Microsoft is > simply not interested in USB device mode. > > Why they use uAB connector I can only assume is because of the smaller > size then standard-A, and because they are not interested in standards. > >> > The output of "lspci -nn" shows: >> > >> > > 00:14.0 USB controller [0c03]: Intel Corporation Atom Processor >> > > Z36xxx/Z37xxx Series USB xHCI [8086:0f35] (rev 09) > > So 0f35 is indeed is the xHCI host controller. Baytrail boards that > have the device controller have second USB controller with device id > 0f37. > > > Br, > > -- > heikki -- 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
