Dear Troy Kisky, > On 9/23/2013 1:23 PM, Troy Kisky wrote: > > On 9/22/2013 5:05 PM, Marek Vasut wrote: > >> Dear Troy Kisky, > >> > >>> On 9/20/2013 3:45 AM, Marek Vasut wrote: > >>>> Dear Troy Kisky, > >>>> > >>>>> i.mx6 has 1 otg controller, and 3 host ports. So, > >>>>> CONFIG_USB_MAX_CONTROLLER_COUNT can be greater than 1 > >>>>> even though only 1 device mode controller is supported. > >>>>> > >>>>> Signed-off-by: Troy Kisky <troy.ki...@boundarydevices.com> > >>>> > >>>> The problem is, will the 3 additional ports still work? I suspect they > >>>> will, but then if you run 'usb reset', the gadget port will also be > >>>> switched back into USB Host function, no > >>>> > >>>> Best regards, > >>>> Marek Vasut > >>> > >>> The next patch checks the OTG id before switching to host mode. If > >>> it is > >>> grounded, then it enters > >>> host mode, otherwise it doesn't. But, running 'usb reset' on a > >>> netconsole may kill your connection. > >> > >> It won't if you properly ignore rhis one controller depending on the > >> OTG pin > >> then, no ? > > > > I can return an error code from ehci_hcd_init, so that ehci_reset will > > not be called. But then > > usb_lowlevel_init will also return an error, which is good for the > > call from usb_init, but bad > > for the call in usb_gadget_register_driver. > > > > Perhaps I should return a 1, instead of 0, when the otg_id pin is > > high? And check for < 0 > > before aborting from usb_gadget_register_driver ? > > > > Thanks > > Troy > > Or maybe add a parameter to usb_lowlevel_init specifying if I desire > host or device mode?
Check [PATCH v4] usb: new board-specific USB init interface That might give you some ideas. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
