[U-Boot] Are mmc open/close subcommands needed?

[Otavio Salvador]

On Thu, Jan 2, 2014 at 9:36 PM, Marek Vasut <marex at denx.de> wrote:
> On Thursday, January 02, 2014 at 05:53:00 PM, Hector Palacios wrote:
>> Hi,
>>
>> I saw commit 2a91c9134675140853577b565210458b5774e6cf that introduces mmc
>> subcommands 'open' and 'close' to access eMMC boot partitions and was
>> wondering if they are really needed. Can't the same be achieved with
>> already existing 'mmc dev [dev] [part]' command?
>>
>> mmc open <dev> <boot_partition>
>>   is the same as
>> mmc dev <dev> <part>
>>   where <part> is the boot partition
>>
>> mmc close <dev> <boot_partition>
>>   is the same as
>> mmc dev <dev> 0
>>   as a 0 will switch to partition 0 (user data).
>>
>> Best regards,
>> --
>> Hector Palacios
>
> +CC Panto

No; this is for different use.

The open and close are to open the Boot partitions part of eMMC 4; by
default those eMMC will be using the user partitions, not the boot
area.

The nice, and confusing thing, is that those boot partitions also
start in address 0 as a 'virtual disk'.


-- 
Otavio Salvador                             O.S. Systems
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