[LinuxBIOS] EHCI stack to port to FILO?

Stefan Reinauer stepan at coresystems.de
Mon Oct 1 08:59:02 CEST 2007

* Corey Osgood <corey.osgood at gmail.com> [071001 05:03]:
> > So you should find UHCI controller devices when EHCI is enabled. And
> > if you disable EHCI, the UHCI/OHCI controllers should be disabled
> > too.
> Hmm, vt8237r has a separate device for EHCI that can be disabled without
> disabling the UHCI controllers. I'm assuming that this essentially makes
> them act as regular UHCI controllers.
You don't have to disable the EHCI controller device to use the other.
If you don't use the EHCI device, the USB communications will just be
1.1 instead of 2.0

> boot: uda1:/vmlinuz root=/dev/hda1 console=ttyS0,115200n8
> earlyprintk=ttyS0,115200n8 ro            
> LinuxLabs USB bootloader
> New USB device, setting address 2
> New USB device, setting address 2
> [...]
> New USB device, setting address 2
> There is a USB device, but it won't init! This is a bad thing.
I think the driver is broken and/or not well tested, unfortunately.

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