[U-Boot] mmc erase fails from U-Boot command line

Eric Nelson
2015-12-07T14:36:55Z

Hi Fabio,

On 12/06/2015 05:21 PM, Fabio Estevam wrote:
> Hi Eric,
>
> On Fri, Dec 4, 2015 at 8:42 PM, Eric Nelson <eric@nelint.com> wrote:
>
>> I've figured out a way to repeat this on my machine.
>>
>> If I write 0xff's to the eMMC blocks, then issue an erase for the same,
>> I get the problem with each MMC_ERASE command.
>>
>> I've also found something that fixes the issue in my testing.
>>
>> Changing SECURE_ERASE to 0 from 0x80000000 in include/mmc.h allows
>> things to function for me.
>>
>> Page 115 of the JEDEC eMMC 4.5 spec says that bit 31 is obsolete and
>> should be zero:
>> http://www.jedec.org/sites/default/files/docs/jesd84-B45.pdf
>>
>> Hector and Fabio, can you test that change?
>
> Managed to get access to a revC2 board and tested your change.
>
> I am happy to say that 'mmc erase' works now :-)
>

Glad to hear it.

> Good job, Eric!
>
> When you send a formal patch then you can add:
>
> Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
>

Will do.