Re: [PATCH 0/2] mmc: core: pre-patch for next eMMC version

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Hi Ulf,

On 8/29/12, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> Hi Jaehoon,
>
> On 28 August 2012 06:33, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
>> Hi Ulf,
>>
>> This patch is to support eMMC5.0.(already discussing on eMMC5.0.)
>> Revision value is defined the 0x7 into ext_csd register.(in eMMC5.0's
>> case)
>
> Until the spec is really set we should not add some new code for this,
> it does not make sense to kind of guess.
It's not guess. it's determined and will be discussed at JEDEC soon.

Revision 1.7 (for MMC V5.0)

Thank you,
Kyungmin Park
>
>>
>> And case of Quirks is preparation patch to prevent the problem that should
>> exist.
>> That Quirks can also use for backward compatibility.
>> (if card is greater version than eMMC4.5 and need to use only eMMC4.5
>> feature?
>>  then can use quirks and known_rev.)
>
> It is just speculations about potential problems with eMMC 5.0. I
> think we can leave this to later, if/when we see a need for it.
>
> Kind regards
> Ulf Hansson
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