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When card is running with DDR mode, dwmmc needs to set DDR_REG bit at UHS_REG register. Before this patch, dwmmc controller doesn't consider this. If this patch is not applied, CRC or other error shoulds be occurred. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>