[U-Boot-Users] DDR SDRAM in DIMM module for Yosemite-likePPC440EP board.

[Stefan Roese]

On Friday 20 October 2006 18:50, Ben Warren wrote:
> > [Leonid] I see, that may be it - this way u-boot may be workable. Is it
> > the only way to work with DIMM module? How I can initialize such SDRAM
> > inside BDI2000 config file? Because I cannot use WORKSPACE otherwise and
> > code burning takes long time...
>
> Of course you don't have to use the SPD stuff, but you should.  If the
> BDI won't work as-is, you need to learn more about your DDR controller
> and your particular DIMM's timing information, both of which should be
> readily available.  While DDR control is fairly complicated, there
> aren't that many knobs to turn and you may get lucky early on.
>
> Another approach that's less systematic is to get U-boot working,

Yes. When your hardware layout is ok, you have a good chance that with the 
correct setup (I2C SPD EEPROM addresses), U-Boot will initialize the DDR 
controller correctly. Then you have no need to burn flash via the debugger 
anymore. ;-)

Best regards,
Stefan