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From: Ira W. Snyder <iws@ovro.caltech.edu>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v3 2/2] mpc85xx: support for Freescale COM Express P2020
Date: Fri, 11 Nov 2011 09:12:32 -0800	[thread overview]
Message-ID: <20111111171232.GB32482@ovro.caltech.edu> (raw)
In-Reply-To: <CAEsOVNfEeZk6OADrRtOvqADUVSnfsJLsHSKyOSTp04cZ+oTo4g@mail.gmail.com>

On Fri, Nov 11, 2011 at 04:58:17PM +0000, McClintock Matthew-B29882 wrote:
> On Fri, Nov 11, 2011 at 10:53 AM, Ira W. Snyder <iws@ovro.caltech.edu> wrote:
> >> Does the board really support different DDR freq or is this copy / paste?
> >>
> >
> > The memory is an SODIMM, but the RAM is configured before U-Boot runs by
> > the Freescale On-Chip ROM. See above comment.
> 
> If this is a P2020 you could use the on chip rom to copy u-boot to
> L2SRAM and configure DDR via SPD - if you ever plan to change the
> SODIMMs this could be very useful.
> 

Yep, this is a P2020.

I'll check the Freescale documentation. Hopefully it provides an example
of how to configure the On-Chip ROM to use L2SRAM instead of DDR.

I'll try and find a U-Boot port that configures DDR via SPD. I'm sure
there are plenty, however any hints are welcome. :)

Thanks for the input,
Ira

  reply	other threads:[~2011-11-11 17:12 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-10 21:11 [U-Boot] [PATCH v3 0/2] mpc85xx: support for Freescale COM Express P2020 Ira W. Snyder
2011-11-10 21:11 ` [U-Boot] [PATCH v3 1/2] mpc85xx: support board-specific reset function Ira W. Snyder
2011-11-10 21:11 ` [U-Boot] [PATCH v3 2/2] mpc85xx: support for Freescale COM Express P2020 Ira W. Snyder
2011-11-11 13:22   ` Kumar Gala
2011-11-11 16:53     ` Ira W. Snyder
2011-11-11 16:58       ` McClintock Matthew-B29882
2011-11-11 17:12         ` Ira W. Snyder [this message]
2011-11-11 20:36           ` McClintock Matthew-B29882
2011-11-11 21:03             ` Ira W. Snyder
2011-11-11 21:07               ` McClintock Matthew-B29882
2011-11-11 22:18                 ` Ira W. Snyder
2011-11-11 22:54                   ` McClintock Matthew-B29882
2011-11-11 23:02                     ` York Sun
2011-11-11 23:10                       ` Ira W. Snyder
2011-11-11 23:33                         ` Ira W. Snyder
2011-11-12 18:16       ` Kumar Gala
2011-11-19  1:31         ` Ira W. Snyder
2011-11-19 16:13           ` Kumar Gala

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