Re: [Linux-usb-users] Re: What to do with all of the USB UHCI drivers in the kernel?

Stephen J. Gowdy
2002-05-23T14:48:44Z

Hi Martin,
What do you actually want to know? That an EHCI controller should
use the ehci-hcd driver and that the OHCI controller should use the
ohci-hcd controller? Or that the uhci-* drivers can't drive a EHCI or OHCI
controller? Or something else?

rgeards,

Stephen.

On Thu, 23 May 2002, Martin Dalecki wrote:

> Uz.ytkownik Greg KH napisa?:
> > On Wed, May 22, 2002 at 03:35:48PM -0400, Andre Bonin wrote:
> >
> >>>This is probably because you have an OHCI hardware device, not a UHCI
> >>>device. What does 'lspci -v' say for your machine?
> >>
> >>Sorry, i'me not too familiar with the USB architecture. Anyway here is
> >>the relevant lspci entries (note: I did this under my working 2.4.18)
> >>
> >>02:08.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
> >> Subsystem: Unknown device 807d:0035
> >> Flags: bus master, medium devsel, latency 32, IRQ 19
> >> Memory at cd000000 (32-bit, non-prefetchable) [size=4K]
> >> Capabilities: [40] Power Management version 2
> >>
> >>02:08.1 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
> >> Subsystem: Unknown device 807d:0035
> >> Flags: bus master, medium devsel, latency 32, IRQ 16
> >> Memory at cc800000 (32-bit, non-prefetchable) [size=4K]
> >> Capabilities: [40] Power Management version 2
> >>
> >>02:08.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])
> >> Subsystem: Unknown device 807d:1043
> >> Flags: bus master, medium devsel, latency 32, IRQ 17
> >> Memory at cc000000 (32-bit, non-prefetchable) [size=256]
> >> Capabilities: [40] Power Management version 2
> >
> >
> > You only have EHCI and OHCI hardware. No wonder the UHCI drivers do not
> > work :)
> >
> >
> >>>And how does 2.5.17 work for you?
> >>
> >>Not too good beacuse I don't have the option of enabling OHCI :) Are we
> >>still keeping it?
> >
> >
> > Yes, use the ohci-hcd driver. Also you can use the ehci-hcd driver if
> > you have any USB 2.0 devices, as it looks like you have a USB 2.0
> > controller.
>
>
> Could you please just do me a small favour and drop something
> in to linux/Documentation. Becouse I'm right now already confused
> about which driver to use and which alias to put in /etc/modules.conf
> so kudzu stops hollering about not knowing what to do
> if I out of a sudden reboot in to 2.5.xx kernel.
>
> Many thank's in advance.
>
> PS. I could of course figure it out of my self, but since
> I don't attach anything to USB on my box *that* frequently.
>
>
>
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>
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