2008-03-25 06:15:28 sd/mmc in cm-bf537e

Bastien Briec (FRANCE)

Message: 53003 Hello, i'm trying to use a sd card with the bluetechnix eval board, i compiled the kernel with this parameter :

Device Drivers --->

MMC/SD Card support --->

<*> MMC/SD for SPI support (EXPERIMENTAL)

(1) SPI chip select signal for MMC/SD card

<*> MMC/SD Card detect support (EXPERIMENTAL)

(5) Card detect PFx number

File systems --->

DOS/FAT/NT Filesystems --->

<*> MSDOS fs support

<*> VFAT (Windows-95) fs support

(437) Default codepage for FAT (NEW)

(iso8859-1) Default iocharset for FAT (NEW)

Native Language Support --->

Base native language support (iso8859-1) Default NLS Option

<*> Codepage 437 (United States, Canada)

Main menu Filesystem

Applications --->

[*] fdisk

[*] e2fsck

[*] mke2fs

[*] mkdosfs

but the sd card is not detected :

root:~> cat /proc/spi_mmc

Driver build date: Mar 25 2008

Driver author: Hans Eklund(hans@rubico.se)

SPI CLK: 400 KHz

SPI CS : 1

Error/Status log[0xNEW, 0x0000, 0xOLDEST]. Total: 0

E: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000

S: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000

No MMC/SD card found.

Can somebody help me

Regards, Bastien

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2008-03-25 06:46:38 Re: sd/mmc in cm-bf537e

Hans Eklund (SWEDEN)

Message: 53005 Im not sure if card detection singal really works with all versions of the driver. I would not rely on it. Note also that no card detection is done by reading /proc/spi_mmc, its mearly there for viewing driver status. Try fdisk /dev/spi_mmc to make sure it is opened correctly and that the card init code is run. Create a partition and do mke2fs /dev/spi_mmc1 on it. Dont use the driver with other spi devices active on the bus, it wont work. /Hans

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2008-03-25 07:00:00 Re: sd/mmc in cm-bf537e

Bastien Briec (FRANCE)

Message: 53006 i try to do fdisk /dev/spi_mmc but i get :

Unable to open /dev/spi_mmc

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2008-03-26 15:51:37 Re: sd/mmc in cm-bf537e

Frank Van Hooft (CANADA)

Message: 53075 I'd had some trouble getting the SD card working on a BF537-STAMP board, but it's working fine now. Take a look at this thread:

http://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?action=ForumBrowse&forum_id=39&_forum_action=ForumMessageBrowse&thread_id=25834

for some possible help.

Some comments from my experience (don't take these as gospel, this is simply what I found):