From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anatolij Gustschin <agust@denx.de>
Date: Wed, 3 Apr 2013 19:54:07 +0200
Subject: [U-Boot] PPC4XX Custom Board - Failing to read I2C
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Hi,

On Wed, 3 Apr 2013 10:29:00 -0700 (PDT)
txcotrader <txcotrader@gmail.com> wrote:

> After hooking the DIMM's I2C up to the o-scope, I don't see a clock signal.
> The board will boot with a u-boot version from 2007. Have you ever come
> across a missing I2C clock?

How many I2C busses are actually used on your board ? On which bus is
the SPD EEPROM ? If it is on a I2C bus other than 0, then you have to
use

#define CONFIG_SYS_SPD_BUS_NUM <your-spd-bus-num>

in the board config file.

HTH,

Anatolij