Messages in this thread | | | Date | Sat, 26 Nov 2005 21:04:37 +0000 (GMT) | From | Mark Underwood <> | Subject | Re: pxa27x_udc -- support for usb gadget for pxa27x? |
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--- Pavel Machek <pavel@ucw.cz> wrote:
> Hi! > > > > Pavel Machek wrote: > > > > > > > > ...for the spitz. Do you think I can just copy this one? ...eh, no, > > > > will not fly, there's no SPITZ_GPIO_USB_PULLUP. > > > > > > There are internal pull-ups (and pull-downs) perhaps you can use those? > > > > > > Hmmm. Though the C5 stepping might be different -- best to check the > > > "specification update". > > > > I can confirm that you'll need to use the internal pxa27x pullups > > for > > How can I use pxa27x pullups? > > > this. You'll probably also need to make sure GPIO 35 is low to ensure > > the usb Vcc line isn't powered (as it would be in usb host mode. > > Are you sure? spitz_ohci_init() seems to play with GPIO 37. > > (Perhaps spitz_ohci_init should disable the other GPIO?) > > > Ultimately, it would be nice to have the Zaurus detect whether a usb > > host or client was present (using gpio 41 maybe?) and then activate the > > host (ohci) or client (pxa27x_udc) driver as appropriate. > > Unfortunately, that would make ohci unfunctional for me. I have normal > usb device cable, connected to "USB gender changer" -- basically two > female connectors -- so that I can plug USB network card into that. >
Just a thought. How about a sysfs entry which you can use to jam the device into either slave or host mode?
Mark
> Pavel > > -- > Thanks, Sharp! > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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