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    • Chen-Yu Tsai's avatar
      ARM: dts: sunxi: Explicitly enable pull-ups for MMC pins · 80ee72e7
      Chen-Yu Tsai authored
      
      
      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: default avatarChen-Yu Tsai <wens@csie.org>
      Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
      80ee72e7
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