Re: pxa27x_udc -- support for usb gadget for pxa27x?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.

								Pavel

-- 
Thanks, Sharp!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux