Using USB1.1 device on USB 2.0 Hub on an ARM board

[Joyious He <joyious@xxxxxxx>]

Hi all,
I am using a usb sound card in my ARM board with Freescale iMx31 CPU.It's a USB1.1 device, and on the board it has a USB OTG port.I connecteda USB2.0 hub to the port and using a USB2.0 ethernet card at the sametime to using NFS.
Now the ethernet card works fine, and the sound card output also worksfine. but the input does not work at all. I got some log in audio driverand it's hanging there waiting for the input data. this also happendwhen i used a IR receiver. the driver can only get the first byte data,then all zeros.
I have check some USB related infomation. I am using 2.6.10 linux kerneland on the board it does not have a OHCI or UHCI controller there.Inkernel config i have enable the options below:
  │ │           <*> EHCI HCD (USB 2.0)support│ │    │ │           [*]   Support for ARC controller│ │    │ │           [ ]     Support for Host1 port on ARC controller│ │    │ │           [ ]     Support for Host2 port on ARC controller│ │    │ │           [*]     Support for OTG HS Host port on ARC controller│ │    │ │           [*]   Full speed ISO transactions (EXPERIMENTAL)│ │    │ │           [*]   Root Hub Transaction Translators(EXPERIMENTAL)             
but i do not know the details for all of this, could you just give memore info about this issue ?

Many Thanks,Joyious


-------------------------------------------------------------------------This SF.net email is sponsored by: MicrosoftDefy all challenges. Microsoft(R) Visual Studio 2005.http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/_______________________________________________linux-usb-devel@xxxxxxxxxxxxxxxxxxxxxxx unsubscribe, use the last form field at:https://lists.sourceforge.net/lists/listinfo/linux-usb-devel