From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Mon, 30 Jun 2008 20:51:20 +0200 Subject: [U-Boot-Users] Using DDR1 in AMCC 460EX custom design In-Reply-To: <486926B9.1090102@embedded-sol.com> References: <486926B9.1090102@embedded-sol.com> Message-ID: <200806302051.20589.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 Hi Felix, On Monday 30 June 2008, Felix Radensky wrote: > I will soon have to port U-Boot to a custom board based on AMCC 460EX CPU. > This board should be very close to Canyonlands evaluation board, but board > designers decided to use DDR1 instead of DDR2 present on Canyonlands. > > Looking at U-Boot 1.3.3 code, I can see that DDR1 support for 460EX is > available > in cpu/ppc4xx/cp44x_spd_ddr2.c. My question is - was DDR1 support ever > tested > on 460EX. No, not from me while porting to Canyonlands. Could be that AMCC tested it on their 460EX Maple reference design. Please contact AMCC on this. As you already noticed, cpu/ppc4xx/cp44x_spd_ddr2.c has some DDR1 support. But I'm not sure if this will work "right out of the box". Could be that some changes are needed. > Another question is - are there DDR1 DIMMs that can be used on > Canyonlands ? No. This is not possible. Best regards, Stefan ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de =====================================================================