[Notice this reply has little to do with the patch in question: I think
it should be applied. I just want to involve some MMC/SD people here]
On Thu, Nov 17, 2016 at 9:57 PM, wrote:
> On 2016-11-17 10:34, Chen-Yu Tsai wrote:
>>
>> Given that MMC starts in open-drain mode and the pull-ups are req
On 2016-11-17 10:34, Chen-Yu Tsai wrote:
Given that MMC starts in open-drain mode and the pull-ups are required,
it's best to enable it for all the pin settings.
It's even more complicated than that with MMC. It starts in open-drain
mode for
CMD during initialization but changes to push-pull a
On Thu, Nov 17, 2016 at 05:34:38PM +0800, Chen-Yu Tsai wrote:
> In the past, all the MMC pins had
>
> allwinner,pull = ;
>
> which was actually a no-op. We were relying on U-boot to set the bias
> pull up for us. These properties were removed as part of the fix up to
> actually support no b
In the past, all the MMC pins had
allwinner,pull = ;
which was actually a no-op. We were relying on U-boot to set the bias
pull up for us. These properties were removed as part of the fix up to
actually support no bias on the pins. During the transition some boards
experienced regular MMC
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