[U-Boot] mmc erase command fails with DAT0 timeout on eMMC on iMX6 board

[Fabio Estevam]

Hi Hector,

On Thu, Jun 4, 2015 at 8:23 AM, Palacios, Hector
<Hector.Palacios at digi.com> wrote:
> Hello,
>
> I can see the command 'mmc erase blk# cnt' fails with a DAT0 timeout on iMX6 boards when run over the eMMC.
>
> => mmc dev 2
> => mmc erase 4000 1000
> MMC erase: dev # 2, block # 16384, count 4096 ... Timeout waiting for
> DAT0 to go high!
> mmc erase failed
> 0 blocks erase: ERROR
>
> I reproduced it with the SabreSD board running upstream U-Boot v2015.04.
> The error does not happen using microSD card, though.

Is this a regression or this timeout has always been there?

Regards,

Fabio Estevam