Re: [U-Boot] U-boot PPC405EX with DDR2 DIMM

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