Re: [RFC PATCH] Revert "mmc: omap_hsmmc: Enable Auto CMD12"

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On Fri, Jun 22, 2012 at 9:05 PM, Ming Lei <ming.lei@xxxxxxxxxxxxx> wrote:
> On Fri, Jun 22, 2012 at 11:13 PM, T Krishnamoorthy, Balaji
> <balajitk@xxxxxx> wrote:
>
>>
>> I tested autocmd12 to be working on OMAP2,3,4 SDP. With beagle board
>> data corruption is observed with some cards, so it is going to be selectively
>> enabling/disabling for some SoCs via board data or DT until data corruption
>> due to Autocmd12 is root caused.
>
> It is still not a good idea.
>
> Considered that data ruin is a very serious problem, you need to find
> the root cause, then you may enable autocmd12.
>
> Also you didn't answer my question, will omap3/4 mmc controller
> just support SD card only?  The TRM said it clearly that the feature
> is only supported for SD card.
>

Autocmd12 is supported for SD/MMC and not supported for SDIO in OMAP3/4.

> Thanks
> --
> Ming Lei
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