Re: [pandaboard] OHCI and hub initialization (bare metal)

[Anand Gadiyar]

The OHCI controller can only talk to serial PHYs. The Pandaboard has a
ULPI PHY, which can only be used with the EHCI controller.

You're using the wrong controller.

On Thu, Jan 31, 2013 at 2:23 AM, <matthew....@gmail.com> wrote:
> Hi,
>
> I've managed to initialize the OHCI host controller and have it counting
> frames and running the schedule. However that's not terribly useful because
> the RH port status insists that nothing is connected to the port. My
> understanding is that there is a built-in hub which should always be
> connected.
>
> I went back and looked over the manual some more. I have initialized the
> USBTLL, the UHH and used GPIO to reset and power on the hub. The
> UHH_HOSTCONFIG is setup so that Port_1 and Port_2 are usable for FS/LS
> operation. I even reset the EHCI controller and checked the port status
> registers there: all of them indicate that the ports are owned by the
> companion controller, presumably OHCI.
>
> But the OHCI RH port status still says there is nothing connected to the
> port.
>
> So I'm wondering if anyone has an idea of what I'm missing or an idea about
> what else is needed in order to connect the OHCI controller to the built-in
> hub with the 2 external ports and the Ethernet adapter.
>
> Thanks!
>
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