Chipidea usb otg support for IMX/MXS (device functionality)
Marek Vasut
marex at denx.de
Sat Jul 6 21:10:00 EDT 2013
Hi Peter,
> > Where can I measure this?
> >
> > > Two possible reasons:
> > >
> > > 1. You have not gpio control for vbus toggle when role switches.
> >
> > This works well.
> >
> > > 2. Your hardware has some problems that the vbus can't lower than 0.8v.
> >
> > How can I check that?
>
> Just measure the voltage of your otg vbus pin.
It's 2.5 volt for me. What am I supposed to observe happening there?
Best regards,
Marek Vasut
More information about the linux-arm-kernel
mailing list