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

Palacios, Hector Hector.Palacios at digi.com
Mon Jun 8 08:53:22 CEST 2015


Hello Fabio,

On Sun, Jun 7, 2015 at 19:23, Fabio Estevam wrote:
> Hi Hector,
> On Thu, Jun 4, 2015 at 8:23 AM, Palacios, Hector 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?

It has been there always, I believe. I have reproduced it with v2013.04.
--
Héctor Palacios


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