[U-Boot] [PATCH 3/3] omap3_beagle: enable EHCI and USB storage.

[Alexander Holler]

Am 27.05.2011 11:40, schrieb Christian Spielberger:
> On 05/27/2011 09:34 AM, Alexander Holler wrote:
>> Am 26.05.2011 17:41, schrieb Alexander Holler:
>>> Am 26.05.2011 13:30, schrieb Christian Spielberger:
>> ...
>>> But even than USB doesn't seem to work on a BeagleBoard XM (at least
>>> some people told me so). I don't have a XM, so I can't help more there.
>>> It might be a problem with (a needed reset of) the HUB which is included
>>> on the XM, I don't know.
>>
>> I forgot to mention that the PHY reset on the XM works inverse than for
>> the BeagleBoard w/o XM. Haven't known this, when I've written that patch.
>>
>> Regards,
>>
>> Alexander
>>
>>
>
> We checked what you mentioned but found that the PHY reset is identical
> between XM and C4. The reset signal is ok. That is what we saw on an
> oscilloscope.
>
> We also found that the USB2HS_CLK initialization does not work, also
> with the oscilloscope. I am going to check the CLK initialization
> sequence in beagle.c/ehci_hcd_init.

It seems the PHY reset was only inverted for XM-A and XM-B and got again 
the same as in the C4 with XM-C.

I've looked up in my mailbox and found a quick and dirty hack from Koen 
Kooi with which he comes at least through the initialization on the XM:

http://dominion.thruhere.net/koen/angstrom/beagleboard/uboot/hacks.diff

But I think he stopped working on that topic, waiting for feedback from 
other people.

You might ask on the mailing list for the BeagleBoard about the status.

Regards,

Alexander