USB - Interrupt problem

Nageswari S nageswari at
Mon Nov 18 17:26:04 EST 2002

I have a custom PowerPC board (IBM 405 Based) with USB - OHCI compliant
controller on OPB bus. I have taken SA1111 usb driver as a refernce and
enabled USB. The root hub got initialised and
cat /proc/bus/usb/devices outputs

" T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=
" B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
" D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxP
" P:  Vendor=0000 ProdID=0000 Rev= 0.00
" S:  Product=USB OHCI Root Hub
" S:  SerialNumber=ef601200
" C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
" I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00
" E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

but, there is no change in interrupts when I connect a USB device.
cat /proc/interrupts output is

  2:     119608  405IAP UIC Edge      NE2000
 11:          1  405IAP UIC Edge      usb-ohci
 29:        604  405IAP UIC Edge      keyboard
BAD:          0

Also, whatever device I connect, it does not get listed in
Could anybody please tell me as to where the problem is regarding the

Any help or suggestion would be very helpful....

Thank you for your time....


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