excuse me, I think I would give you much more infomations about this problem.
below is what I have done in order to probe what's usb hub going in kernel.
but I didn't get any usb mouse or usb keyboard infomations.
the kernel didn't enable usb mouse or keyboard, didn't it?
root@beagleboard:~# dmesg | grep -i usb
[ 14.584655] musb_hdrc: version 6.0, musb-dma, otg (peripheral+host), debug=0
[ 14.584899] musb_hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine (X),
bulk split (X), HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 14.584930] musb_hdrc: MHDRC RTL version 1.400
[ 14.584960] musb_hdrc: setup fifo_mode 4
[ 14.584991] musb_hdrc: 28/31 max ep, 16384/16384 memory
[ 14.584991] musb_hdrc: hw_ep 0shared, max 64
[ 14.585021] musb_hdrc: hw_ep 1tx, max 512
[ 14.585021] musb_hdrc: hw_ep 1rx, max 512
[ 14.585052] musb_hdrc: hw_ep 2tx, max 512
[ 14.585052] musb_hdrc: hw_ep 2rx, max 512
[ 14.585052] musb_hdrc: hw_ep 3tx, max 512
[ 14.585083] musb_hdrc: hw_ep 3rx, max 512
[ 14.585083] musb_hdrc: hw_ep 4tx, max 512
[ 14.585113] musb_hdrc: hw_ep 4rx, max 512
[ 14.585113] musb_hdrc: hw_ep 5tx, max 512
[ 14.585144] musb_hdrc: hw_ep 6tx, max 512
[ 14.585174] musb_hdrc: hw_ep 6rx, max 512
[ 14.585174] musb_hdrc: hw_ep 7tx, max 512
[ 14.585174] musb_hdrc: hw_ep 7rx, max 512
[ 14.585205] musb_hdrc: hw_ep 8tx, max 512
[ 14.585205] musb_hdrc: hw_ep 8rx, max 512
[ 14.585235] musb_hdrc: hw_ep 9tx, max 512
[ 14.585235] musb_hdrc: hw_ep 9rx, max 512
[ 14.585266] musb_hdrc: hw_ep 10tx, max 256
[ 14.585266] musb_hdrc: hw_ep 10rx, max 64
[ 14.585266] musb_hdrc: hw_ep 11tx, max 256
[ 14.585296] musb_hdrc: hw_ep 11rx, max 64
[ 14.585296] musb_hdrc: hw_ep 12tx, max 256
[ 14.585327] musb_hdrc: hw_ep 12rx, max 64
[ 14.585327] musb_hdrc: hw_ep 13shared, max 4096
[ 14.585357] musb_hdrc: hw_ep 14shared, max 1024
[ 14.585357] musb_hdrc: hw_ep 15shared, max 1024
[ 14.585388] musb_hdrc: USB OTG mode controller at d80ab000 using DMA, IRQ 92
[ 15.215759] usbcore: registered new interface driver catc
[ 15.221343] catc: v2.8:CATC EL1210A NetMate USB Ethernet driver
[ 15.227630] usbcore: registered new interface driver kaweth
[ 15.233337] pegasus: v0.6.14 (2006/09/27), Pegasus/Pegasus II USB
Ethernet driver
[ 15.241760] usbcore: registered new interface driver pegasus
[ 15.247558] rtl8150: v0.6.2 (2004/08/27):rtl8150 based usb-ethernet driver
[ 15.254760] usbcore: registered new interface driver rtl8150
[ 15.260833] usbcore: registered new interface driver asix
[ 15.266571] usbcore: registered new interface driver cdc_ether
[ 15.272796] usbcore: registered new interface driver dm9601
[ 15.278717] usbcore: registered new interface driver smsc95xx
[ 15.284790] usbcore: registered new interface driver gl620a
[ 15.290740] usbcore: registered new interface driver net1080
[ 15.296752] usbcore: registered new interface driver plusb
[ 15.302612] usbcore: registered new interface driver rndis_host
[ 15.308837] usbcore: registered new interface driver cdc_subset
[ 15.315093] usbcore: registered new interface driver zaurus
[ 15.321044] usbcore: registered new interface driver MOSCHIP
usb-ethernet driver
[ 15.336242] usbcore: registered new interface driver zd1211rw
[ 15.342346] usbcore: registered new interface driver rtl8187
[ 15.348327] usbcore: registered new interface driver rndis_wlan
[ 15.354644] usbcore: registered new interface driver zd1201
[ 15.360626] usbcore: registered new interface driver usb8xxx
[ 15.366668] usbcore: registered new interface driver rt2500usb
[ 15.372894] usbcore: registered new interface driver rt73usb
[ 15.378875] usbcore: registered new interface driver p54usb
[ 15.565765] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 15.579498] ehci-omap ehci-omap.0: new USB bus registered, assigned
bus number 1
[ 15.606903] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00
[ 15.613525] usb usb1: configuration #1 chosen from 1 choice
[ 15.619628] hub 1-0:1.0: USB hub found
[ 15.629638] Initializing USB Mass Storage driver...
[ 15.635009] usbcore: registered new interface driver usb-storage
[ 15.641143] USB Mass Storage support registered.
[ 15.727813] usbcore: registered new interface driver bcm203x
[ 15.73358] Bluetooth: Digianswer Bluetooth USB driver ver 0.10
[ 15.739959] usbcore: registered new interface driver bpa10x
[ 15.745605] Bluetooth: BlueFRITZ! USB driver ver 1.2
[ 15.750915] usbcore: registered new interface driver bfusb
[ 15.756530] Bluetooth: Generic Bluetooth USB driver ver 0.4
[ 15.762420] usbcore: registered new interface driver btusb
[ 15.906341] usbcore: registered new interface driver usbhid
[ 15.912109] usbhid: v2.6:USB HID core driver
[ 15.924926] usbcore: registered new interface driver snd-usb-audio