--- Pavel Machek <[email protected]> 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!
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