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

Christoph Mair christoph.mair at gmail.com
Thu Dec 8 23:40:25 CET 2011


On Thu, Dec 8, 2011 at 11:04 PM, Christoph Mair
<christoph.mair at gmail.com> wrote:
> 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?
>
> Regards,
>  Christoph

Bus width: 1-bit. Shouldn't this be set by the bootloader to be 4 bit?

Christoph


More information about the Gta04-owner mailing list