Beagle Board not able to detect MMC card

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1

Hi all,

I am new to beagle board. we have B6 version of Board. I download
linux kernel from GIT and done cross compile and able to run on
Target. I keep my uImage.bin and other relevent file's in my new mmc
card. and Uboot detect it and launch my kernel. But i am not able to
detect mmc card at kernel what may be issue. I check dmesg nothing is
appear i.e relevent to mmc.

attached my .config file

2

Hi,

Can you check the bootargs env variable in u-boot?

-Deepak

3

Hi There,

> I am new to beagle board. we have B6 version of Board. I download
> linux kernel from GIT and done cross compile and able to run on
> Target. I keep my uImage.bin and other relevent file's in my new mmc
> card. and Uboot detect it and launch my kernel. But i am not able to
> detect mmc card at kernel what may be issue. I check dmesg nothing is
> appear i.e relevent to mmc.

   I just recently had this problem when I used a microSD card in a
miniSD adaptor,
but when I placed the same microSD card in a full size SD adaptor, the
Linux kernel
was able to mount the root filesystem without any problems.

   Thanks,

      CraigN

4

Hi all,

I have check and found that on kernel verision 2.6.32 from kernel.org.
i am able to detect mmc and mount it on kernel. But with kernel
version 2.6.30.9 i am not able to do it .

So i am not sure why this is happening.

Regards
Naveen

5

Hi All,

I have verified with 2.6.32 kernel from kernel.org and it work but
when i use 2.6.30.9 i am not able to detect MMC.

i also use kernel from GIT(http://git.kernel.org/?p=linux/kernel/git/
tmlind/linux-omap-2.6.git;a=summary) and use 2.6.30 and this kernel
source code is also not able to detect.

so what is such difference between 2.6.30 and 2.6.32 which make mmc
not detected in 2.6.30.

Best Regards
naveen

6

Hi All ,

I am able to detect mmc on 2.6.30. It require to fix up board-
omap3beagle.c.
and small change in mux.h file. also there is need to change in
configuration file.

Regards
NAveen

7

Hey Naveen,

Could you list what you have changed? I am going through the same problem.

Best regards,