Hi,

I have tested with a 2GBytes SD Card and 16MB SD card (both from Kingston) on AT91SAM9261EK with AT91_MCI module.

Test with 2GB card was ok.

However, with the 16MB card (FAT formatted), the card was detected but I got the following error:

mmcblk0: mmc0:c31d SD016 14400KiB
mmcblk0:<7>mmc0: starting CMD18 arg 00000000 flags 00000035
mmcblk0: error 3 sending read/write command
end_request: I/O error, dev mmcblk0, sector 0
Buffer I/O error on device mmcblk0, logical block 0
unable to read partition table

Can anyone advise on the possible causes of the above error ?

FYI, I have checked the card on the desktop and it works fine. The contents of the card is blank.

Thanks in advance.

What kernel version?

Hi AntiSullin,

Kernel version is 2.6.23.1.

Using 4-wire mode.


Thanks in advance.