From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Koller Date: Fri, 09 Sep 2005 11:54:15 +0200 Subject: [U-Boot-Users] MPC8560 DDR controller In-Reply-To: <22584.1126252968@gerd> References: <22584.1126252968@gerd> Message-ID: <43215BC7.7000809@anagramm.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello, Murray! Murray.Jensen at 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