[U-Boot] [PATCH ] MMC: fix user capacity for partitioned eMMC card

Markus Niebel
2014-11-21T11:51:43Z

Hello Jaehoon Chung

Am 21.11.2014 um 11:50 schrieb Jaehoon Chung:
> Hi, Markus.
>
> On 11/18/2014 11:11 PM, Markus Niebel wrote:
>> From: Markus Niebel <Markus.Niebel@tq-group.com>
>>
>> if the card claims to be high capacity and the card
>> is partitioned the capacity shall still be read from
>> ext_csd SEC_COUNT even if the resulting capacity is
>> smaller than 2 GiB
>
> I have one question.
> "smaller than 2GiB" means the size after completed partition?

Yes. Some cards enable a pseudo SLC mode using the enhanced partition attribute.
This results in reduced sizes after completion.

Tested with a 4 GB Micron eMMC (resulting size is around 1.8 GiB)

>
> Best Regards,
> Jaehoon Chung
>

Best Regards

Markus Niebel