Re: USB2 transaction translator

[Masao Uebayashi <uebayasi%gmail.com@localhost>]

I have a WIP patch for TT in a local tree (mostly C&P from FreeBSD).
Let me know if you're interested.

Masao

On Tue, May 10, 2011 at 11:57 PM, Jean-Yves Moulin <jym%eileo.net@localhost> 
wrote:
> Hi everybody,
>
> I'm trying to use an uaudio(4) device on a sheevaplug. My problem is about 
> full-speed device connected to high-speed hub:
>
> ehci0: error opening low/full speed isoc endpoint.
> ehci0: a low/full speed device is attached to a USB2 hub, and transaction 
> translations are not yet supported.
> ehci0: reattach the device to the root hub instead.
>
> And my computer doesn't have an ohci or uhci hub (for usb-1.1)... It has only 
> a ehci (usb-2) hub.
>
> Do you know a solution for this ?
>
> Or is there somebody working on transaction translator for ehci ? (this is in 
> a TODO list in /usr/src/sys/dev/usb/ehci.c)
>
> If not,  I will try by myself but it seems a bit complicated :-)
>
>
> thanks
>
>