Fix the problem, send me the patch, and I change my source ;-) /Ulf
> -----Ursprungligt meddelande----- > Från: r...@crystalfontz.com [mailto:r...@crystalfontz.com] För Rob > Emanuele > Skickat: den 23 april 2010 02:52 > Till: Henry Súcart > Kopia: Samuelsson, Ulf; u-boot@lists.denx.de > Ämne: Re: [U-Boot] at91sam9g45ekes SDHC/MMC > > Hi Henry & U-Boot Community, > > I've been experiencing the same errors and frustration you have. > > So I've been looking at this code and these patch sets for a day or > two now. I've done that in conjunction with reading the SD card spec: > http://www.sdcard.org/developers/tech/sdcard/pls/ > > I've come to the conclusion that this code as it stands will not work > with any card that conforms to the SD Physical Layer Simplified > Specification Version 2.0. This includes all SDHC cards and some > non-HC cards that conform to version 2.0. I have a few 1GB cards that > work just fine with the atmel_mci.c code on a 'G45 as it was in rev > 95c44ec485b46ffb43dbdaa299f1491a500fdadf . > > If your SD card is newer, you'll see in the for loop in "sd_init_card" > in atmel_mci.c time out. In the 2.0 spec, you need to perform a CMD8 > (SEND_IF_COND) first to see if your card is a 2.0 card. In CMD8 you > tell the card the voltages you support and if you support HC cards. > Once you send it the right data there, then ACMD41 will not have its > BUSY bit set. That's all well and good, but additionally the CSD > register is in a new format and that needs updating before any of this > will work. > > In another post, I will be more talk of the mmc/sd code and taking it > forward. > > Rob > > > On Mon, Apr 12, 2010 at 6:55 AM, Henry Súcart <henry.suc...@gmail.com> > wrote: > > Hi Ulf, > > > > Thanks for the reply. I applied your patches but I still can't get it > to > > read the SD card > > > > Without the SD card: > > U-Boot> mmc init 0 > > mmc: command 55 failed (status: 0x0c100025) > > mmc: command 1 failed (status: 0x0c100025) > > No MMC card found > > > > With the SD card: > > U-Boot> mmc init 0 > > mmc: command 1 failed (status: 0x0c100025) > > No MMC card found > > > > > > > > I'm not sure what's going on. > > On Tue, Apr 6, 2010 at 5:57 AM, Ulf Samuelsson > <ulf.samuels...@atmel.com>wrote: > > > >> Henry Súcart skrev: > >> > Hi, > >> > > >> > I've been trying to get an SD card working with an at91sam9g45ek- > es > >> board. I > >> > read a couple of threads in the archive and ended up doing this: > >> > > >> > >> I have booted the AT91SAM9G45EKES (Actually the AT91SAM9M10EKES, > >> but it is almost the same) from SD-Card for the last month. > >> The patchset for 2009.11 is available for testing in my private git > >> branch on www.openembedded.org: origin/ulf/linux-2.6.30-20100317 > >> > >> I came to the conclusion that the atmel MCI driver (written for the > big > >> endian AVR32) has significant byte sex problems. > >> > >> BR > >> Ulf Samuelsson. > >> > >> > >> > I applied these patches: > >> > > >> > http://lists.denx.de/pipermail/u-boot/2009-August/059595.html > >> > http://lists.denx.de/pipermail/u-boot/2009-September/060053.html > >> > http://lists.denx.de/pipermail/u-boot/2009-September/060243.html > >> > > >> > Added these #define's to include/configs/at91sam9m10g45ek.h: > >> > > >> > #define CONFIG_CMD_EXT2 1 > >> > #define CONFIG_CMD_FAT 1 > >> > #define CONFIG_CMD_MMC 1 > >> > #define CONFIG_MMC 1 > >> > #define CONFIG_ATMEL_MCI 1 > >> > > >> > Finally, I added this to the board init function: > >> > > >> > #ifdef CONFIG_ATMEL_MCI > >> > at91_mci0_hw_init(0, 4); > >> > #endif > >> > > >> > When I try it out this is what I get: > >> > U-Boot> mmc init 0 > >> > mmc: clock 150000 too low; setting CLKDIV to 255 > >> > mmc: command 1 failed (status: 0x0c100025) > >> > No MMC card found > >> > > >> > Am I doing something wrong? Any help is appreciated, > >> > > >> > Henry > >> > > >> > > >> > > >> > ------------------------------------------------------------------ > ------ > >> > > >> > _______________________________________________ > >> > U-Boot mailing list > >> > U-Boot@lists.denx.de > >> > http://lists.denx.de/mailman/listinfo/u-boot > >> > >> > > > > _______________________________________________ > > U-Boot mailing list > > U-Boot@lists.denx.de > > http://lists.denx.de/mailman/listinfo/u-boot > > > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
