Re: [PATCH] ARM: dts: sunxi: Explicitly enable pull-ups for MMC pins

[Maxime Ripard]

On Thu, Nov 17, 2016 at 05:34:38PM +0800, Chen-Yu Tsai wrote:
> In the past, all the MMC pins had
> 
> 	allwinner,pull = <SUN4I_PINCTRL_NO_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 time-outs during normal operation, while others
> completely failed to initialize the SD card.
> 
> 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.
> 
> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>

Applied, thanks.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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