[U-Boot] [PATCH 2/4] mmc: fsl_esdhc: Add support to force VSELECT set

Otavio Salvador otavio at ossystems.com.br
Tue Feb 17 13:36:00 CET 2015


On Mon, Feb 16, 2015 at 11:38 PM, Troy Kisky
<troy.kisky at boundarydevices.com> wrote:
> On 2/16/2015 2:38 PM, Otavio Salvador wrote:
>> Some boards cannot do voltage negotiation but need to set the VSELECT
>> bit forcely to ensure it to work at 1.8V.
>>
>> This commit adds CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT flag for this use.
>>
>> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
...
>
> What if 1 controller needs it set and another needs it clear?

I am not sure it makes much sense to have one in 3V3 and another 1V8. Does it?

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750


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