Hi Andy,

On Thu, May 26, 2011 at 2:04 PM, Andy Green <andy@warmcat.com> wrote:
On 05/26/2011 08:15 AM, Somebody in the thread at some point said:

Hi -

Panda Testing update:

Booting on panda seems to be fine but sd/mmc dumps lot of I/O errors on
console.
Tested with device tree enabled and disabled. With device tree enable,
the MMC I/O
errors are more. Tried with multiple SD cards with different brands.

Not sure if there is any bug already listed for this issue.

## Flattened Device Tree blob at 81600000
   Booting using the fdt blob at 0x81600000
   Loading Kernel Image ... OK

Not using DT but...
 
it happens without DT also


[    5.139984] mmcblk0: mmc0:c71c SD01G 982 MiB

[    5.146911] mmcblk0: retrying using single block read
[    5.147186] mmcblk0: error -84 transferring data, sector 0, nr 8,
card status 0x900

...not seeing this at all on an 8GB class 4 microSDHC, brand "Veho" I am using.
Tried with Sandisk SDHC Card 4GB(class 4)
but with this card, it fails to load kernel image from SD to RAM

log:
Panda # fatls mmc 0:1
mmc_send_cmd: timedout waiting for cmddis!
** Can't read from device 0 **

** Unable to use mmc 0:1 for fatls **
Panda # 

Is your card really 1GB SD Card?  Were any of the other cards SDHC?

 
yeah...it's Kingston 1GB card.  I have only two cards with me now. I can try with some
other cards also.

-M