USB connector not Mini-AB?

Al Johnson openmoko at
Mon Jul 21 11:55:03 CEST 2008

On Monday 21 July 2008, Mikko Rauhala wrote:
> ma, 2008-07-21 kello 10:24 +0100, Andy Green kirjoitti:
> > We don't monitor ID pin yet to automate this, but we will.
> Funky.
> > You need to provide some magic sysfs poking by hand at the moment to
> > push it between host and device modes.
> > ~  echo host > /sys/devices/platform/s3c2410-ohci/usb_mode
> > ~  echo 1 > /sys/devices/platform/neo1973-pm-host.0/hostmode
> There was some discussion at some point if the Freerunner can be in host
> mode without providing power _while_ charging from outside 5V (for some
> special applications like robotics, obviously with special non-standard
> cabling arrangements), but I don't know if that ended up with an answer.
> Will only changing the usb_mode accomplish this?

See the USB Host section - 47k from ID to ground, 15k from D+ to ground, 15k 
from D- to ground, and only do the first echo.

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