From: Scott Wood <scottwood@freescale.com>
To: David Beamonte <dbeamonte@telnet-ri.es>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Host USB issue on MPC8272
Date: Fri, 05 Sep 2008 10:17:11 -0500 [thread overview]
Message-ID: <48C14D77.4040001@freescale.com> (raw)
In-Reply-To: <48C0DD6F.8070205@telnet-ri.es>
David Beamonte wrote:
> This issue seems to be related to one problem that we have always had.
> We can't configure buffers of SMCs, SCCs, etc, to be in SDRAM, because
> the processor hangs. We always have to configure buffers in DPRAM. In
> other drivers this has not been a problem, because the buffer size is
> not very large, so we can allocate it in DPRAM, but for this one, the
> buffer size is 0x8000 (32Kb) which exceeds DPRAM size.
>
> Has anybody had the same problem? Can it be an USB specific problem or a
> general one?
Make sure that BCR[PLDP] is not set, as per erratum SIU18.
-Scott
next prev parent reply other threads:[~2008-09-05 15:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-05 7:19 Host USB issue on MPC8272 David Beamonte
2008-09-05 15:17 ` Scott Wood [this message]
2008-09-08 14:24 ` David Beamonte
2008-09-09 6:18 ` David Beamonte
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