From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pete MacKay Date: Tue, 13 Feb 2007 14:27:05 -0800 (PST) Subject: [U-Boot-Users] MMC Card Problems with U-Boot 1.1.6 In-Reply-To: References: Message-ID: <8954799.post@talk.nabble.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de What kind of MMC cards are you using? We're in the same boat and haven't been able to initialize Patriot 512MB cards. I've rewritten/added to the code for SD 2.0 (added 'sdinit' and an sd interface) and am seeing portions of the data dropped when I read blocks from a 512MB SanDisk SD 2.0 card. We're clocking at 10 MHz, running a 312 MHz PXA-270 (with turbo mode), and both cards work fine under our 2.6.18 kernel. You can define DEBUG and MMC_DEBUG and rebuild u-boot to look at the command outputs. Our MMC_STAT register reads 0x2140 on successful commands and 0x2142 on timeouts. Has anyone been able to copy file systems correctly with MMC or SD on the PXA-270? I'm not convinced this ever worked. sgobien wrote: > > I?m using U-Boot 1.1.6, and I?m having problems with the MMC support. My > board is a custom board based on the PXA270 CPU, with 128MB of SDRAM and > 64MB > of internal flash. Using the loadb command, I can successfully copy my > filesystem to the SDRAM. Then, I use the cp.b command to transfer it to > flash. > Everything works properly and the filesystem transfers without any > problem. > > Next, I tried using the fatload command to copy the same exact filesystem > from > the MMC card to SDRAM. U-Boot claims that the entire file was copied > correctly as indicated by the filesize environment variable. However, > once I > move the filesystem to flash, it ends up corrupted in the flash. I can > only > conclude that the fatload command has incorrectly copied the filesystem > from > the MMC card to SDRAM. > > Has anybody had trouble using MMC cards and the fat commands with a PXA270 > CPU? I don?t receive any error messages, so I?m not really sure where to > look. > > Thanks in advance for any guidance. > > Steve > -- View this message in context: http://www.nabble.com/MMC-Card-Problems-with-U-Boot-1.1.6-tf3189031.html#a8954799 Sent from the Uboot - Users mailing list archive at Nabble.com.