[U-Boot] [PATCH] Revert "mmc: retry the cmd8 to meet 74 clocks requirement in the spec"

Andy Fleming afleming at gmail.com
Sat Nov 26 00:44:53 CET 2011


On Tue, Nov 15, 2011 at 3:35 AM, Macpaul Lin <macpaul at andestech.com> wrote:
> This reverts commit 02f3029f1810b99869254d0cf0a71946a008a728.
>
> This patch add 3 times retry to CMD8 because the Marvell mmc controller
> doesn't obey the power ramp up process in the SD specification 6.4.1.
> (Please refer to figure 6.1 and 6.2 in the specification.)
>
> The CMD0 should be send after power ramp up has been finished.
> However, the Marvell mmc contorller must do power ramp up after the
> first CMD0 command has been send.
>
> This patch also affect existing platforms like Nokia N900 and other
> platforms.
>
> Signed-off-by: Macpaul Lin <macpaul at andestech.com>

Applied, thanks everyone!


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