Hello, Murray!
Murray.Jensen@csiro.au wrote:
Hi U-Boot Users, I noticed a patch go through CVS a few days ago which updated the DDR DLL workaround for the tqm8560 and tqm8540 boards and it piqued my interest - mainly because we are having trouble with the DDR memory on our MPC8560 board.
How do you test the DDR memory in your case? It would be interesting to do the same over here. Is there some code available?
I am interested in other people's experiences with the DDR controller on their MPC8560 based boards - either positive or negative. Here is our tail ...
Over here, I am working on an MPC8540 board from MicroSys which is able to do ECC. Currently, I haven't seen any errors looking at the ECC status registers after several days uptime and lots of memory io, so I think the DDR is okay. I turned off ECC for some performance tests (no results yet)... never had a problem there, too.
Our processors are marked "PPC8560..." rather than "MPC8560.." and are dated 0412 (week 12 of 2004 I believe ??). We were thinking that maybe these were pre-production chips and it might help things if we replaced them with "younger chips". By the way, I believe our chips are version 2.0.2.
Mine says: PPC8540 PX833LB 2L71V MSIA QEAD0412 working fine @166MHz
Greets,
Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany
http://www.anagramm.de Phone: +49-89-741518-50 Fax: +49-89-741518-19