On Thu, Jul 06, 2017 at 01:13:01AM +0300, Dmitry Osipenko wrote: > On 05.07.2017 23:31, Stephen Warren wrote: > > On 07/05/2017 11:19 AM, Dmitry Osipenko wrote: > >> Some time ago Thierry Reding sent out patches that enabled UDC on NVIDIA > >> Tegra, unfortunately they haven't got enough traction to get into the > >> kernel. I've rebased those patches and added a fix for the Ethernet USB > >> Gadget on Tegra20, Marc Dietrich tested UDC driver on AC100 and Nicolas > >> Chauvet on TK1. Like an original patchset, this series adds support for > >> the peripheral mode only. > > > > Does this mean that the relevant ports no longer support host mode? That's going > > to be a user-visible regression, which doesn't sound like a good idea. Isn't OTG > > possible instead? > > We are going to switch only AC100 and TrimSlice to use the UDC driver. Do you > know whether that port is working in a host mode with the tegra-ehci driver on > these devices? That should be a micro USB port. Since that port is working in a > device mode by default, I presume that switching it into a host mode would > require some extra 'dance', otherwise I may drop the AC100 / TrimSlice patches. > > The full-featured OTG should be possible, it could be done later if desired. I'm > leaving it to somebody else to implement. > Full-featured OTG? Do you mean it is compliances OTG spec, or just support dual-role switch through ID pin or external connector? -- Best Regards, Peter Chen -- 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
