[Gta04-owner] Error in pin layout of serial cable?

[Fox Mulder]

Am 08.12.2011 23:04, schrieb Christoph Mair:
> On Wed, Dec 7, 2011 at 4:26 AM, Jens Seidel <jensseidel at users.sf.net> wrote:
>> Following http://projects.goldelico.com/p/gta04-main/page/SerialBoot/
>> I can access the device.
>> Booting from sd card fails nevertheless (tried 2 different cards, a
>> 512MB and a 8GB one).
>>
>> GTA04 # mmcinfo
>>
>> Card did not respond to voltage select!
>> Device: OMAP SD/MMC
>> Manufacturer ID: 0
>> OEM: 0
>> Name: Tran Speed: 0
>> Rd Block Len: 0
>> MMC version 0.0
>> High Capacity: No
>> Capacity: 0
>> Bus Width: 1-bit
>>
>> Any idea?
> 
> Maybe the contact pins are misaligned somehow? Or they do not press
> firmly enough against the card?
> That voltage select error seems strange. Does someone know how this is
> handled? Is this a fixed pin which selects the voltage or a protocol
> feature?
> 
>From some experiments with sd-cards on microcontrollers i know that you
can specify the used voltage range when initializing the card. The card
than answers if the voltage range is supported or not. Don't know if
this is related to your problem but it sounds a bit alike.

Ciao,
     Rainer