-CURRENT, EHCI, and the iPod

[Julian Elischer]

On Mon, 8 Mar 2004, Craig Boston wrote:

> On Monday 08 March 2004 05:30 pm, you wrote:
> > I have MFC'd the ehci controller
> > and I see it working there.
> > well, in general..
> >---------
> >
> > however I still see some problems that I am looking at..
> > e.g. sometimes teh kernel stops booting at the ehci probe.
> > (sometimes it gets past it), So I've more to do.
> 
> Have you been able to successfully connect a USB 2 device to this controller?  
> The behavior I've seen on a couple ICH4 boards is that the controller gets 
> recognized fine and USB 1 devices work (through UHCI).   However, as soon as 
> I connect a USB 2 device, I get the "controller halted" and "disabling port" 
> messages.

yes I have read a USB-2 flash 'keyring' drive at 54Mb/sec. well above
the 12Mb/sec that USB1 is capable of..




> 
> Tried to debug it but didn't have much luck.  I suspect it's some subtle 
> timing bug or other weirdness with Intel's implementation. . .
> 
> My two NEC-based ones work ok -- one PCI and one CardBus.  I do
> sometimes have panics with umass, and occassionally the laptop
> somehow loses all ability to deliver interrupts, to anything (almost
> always when accessing the USB hard drive for the first time after a
> reboot).

Note this is with the MFC'd -stable code.


> 
> Craig
>