From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Fri, 20 Oct 2006 19:46:44 +0200 Subject: [U-Boot-Users] =?iso-8859-1?q?DDR_SDRAM_in_DIMM_module_for=09Yose?= =?iso-8859-1?q?mite-likePPC440EP_board=2E?= In-Reply-To: <1161363013.6814.64.camel@saruman.qstreams.net> References: <406A31B117F2734987636D6CCC93EE3C043861@ehost011-3.exch011.intermedia.net> <1161363013.6814.64.camel@saruman.qstreams.net> Message-ID: <200610201946.44827.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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