mmc: sdhci-of-esdhc: add workaround for pre divider initial value
commit 77bd2f6f upstream. For eSDHC(version < 2.3), the pre divider only could divide base clock by 2 at least. Add workaround for this to avoid unexpected issue. Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com> Acked-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Fixes: bd455029 ("mmc: sdhci-of-esdhc: Pre divider starts at 1") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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