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From: Rommel Custodio <sessyargc+uboot@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] U-boot PPC405EX  with DDR2 DIMM
Date: Thu, 19 Sep 2013 23:44:51 +0000 (UTC)	[thread overview]
Message-ID: <loom.20130920T013111-199@post.gmane.org> (raw)
In-Reply-To: 16691A8B34B5D9458EA3A1C37A11555A01E32A2A@tanisys-ex2.Tanisys.Local

Dear Steve Miller,

Steve Miller <stevem <at> tanisys.com> writes:
>

<snipped>

> 
> Questions:
> 
> 1.        Has anyone compiled u-boot for the 405EX using a DIMM, aka an
> SPD defined RAM?
> 
> 2.       Is there something obvious that I need to place in the config
> to get this to work?   I compared this config to another product that
> uses a 460SX.  I did not see anything special that the 460SX was
> configuring to make the system work with the SPD of the DIMM.  

I have not directly worked with the 405 (only 440 and 465).

FWIW, defining CONFIG_DDR_SPD is not enough in some cases. You would also need 
to adjust timing parameters and row/column bits for your specific DIMM so that 
the DDR controller can correctly access all of your memory.


All the best,
Rommel

  reply	other threads:[~2013-09-19 23:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-18 11:26 [U-Boot] U-boot PPC405EX with DDR2 DIMM Steve Miller
2013-09-19 23:44 ` Rommel Custodio [this message]
2013-09-23 10:36 ` Stefan Roese
  -- strict thread matches above, loose matches on Subject: below --
2013-09-23 12:06 Steve Miller

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