Thank you for your fast answer, but that didn't worked for me.
I used
usb0: host=2-2,usb3=yes
and get the following error in the syslogd
vm 100 - unable to parse value of 'usb0' - unable to parse usb device
I checked the bus/port with "info usbhost", which showed me bus 2 and port 2. But "info...