[U-Boot] [PATCH v4 2/3] mpc8xxx: assume unregistered DIMM for invalid SPD module_type

[Ira W. Snyder]

On Mon, Nov 21, 2011 at 07:11:14PM +0000, sun york-R58495 wrote:
> ________________________________________
> From: Ira W. Snyder [iws at ovro.caltech.edu]
> Sent: Monday, November 21, 2011 10:59 AM
> To: u-boot at lists.denx.de
> Cc: sun york-R58495
> Subject: [PATCH v4 2/3] mpc8xxx: assume unregistered DIMM for invalid SPD module_type
> 
> The generic Freescale DDR SDRAM SPD parsing code fails when the SPD's
> module_type field has an unknown value. In this case, we should assume
> that the memory module is an unregistered DIMM (the usual case).
> 
> The DDR3 DIMM shipped with the Freescale COM Express P2020 Evaluation
> Kit has the module_type field set to 0x08. This is an unknown value in
> all documentation I can find online.
> 
> Signed-off-by: Ira W. Snyder <iws at ovro.caltech.edu>
> Cc: York Sun <yorksun at freescale.com>
> ---
> 
> Isn't 0x08 72b-SO-UDIMM?
> 

I found this document, which specifies 7 modes not listed in U-Boot's
include/ddr_spd.h.

http://www.jedec.org/standards-documents/docs/spd-4010211

I'll try to add support for all of the other types defined as I add
support for the module type that I have.

Thanks,
Ira