root@arago:~# dmesg | grep USB
-----------> Registering USB2.0 with forced Host-mode
MUSB255 controller's USBSS revision = 4ea11003
Waiting for USB PHY clock good...
musb-hdrc musb-hdrc: USB OTG mode controller at fee00000 using DMA, IRQ 58
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci ohci.0: new USB bus registered, assigned bus number 1
ohci ohci.0: starting USB controller
Waiting for USB PHY clock good...
usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
hub 1-0:1.0: USB hub found
USB Serial support registered for generic
usbserial: USB Serial Driver core
USB Serial support registered for FTDI USB Serial Device
ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver
USB Serial support registered for pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver
musb-hdrc musb-hdrc: MUSB HDRC host driver
musb-hdrc musb-hdrc: new USB bus registered, assigned bus number 2
musb-hdrc musb-hdrc: supports USB remote wakeup
usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: MUSB HDRC host driver
hub 2-0:1.0: USB hub found
usb 2-1: new high-speed USB device number 2 using musb-hdrc
usb 2-1: New USB device found, idVendor=0424, idProduct=2517
usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
hub 2-1:1.0: USB hub found
usb 2-1.3: new full-speed USB device number 3 using musb-hdrc
usb 2-1.3: New USB device found, idVendor=1546, idProduct=01a6
usb 2-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0