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0797b03c08
MMC_CMD1 command is used to check whether card is MMC type (checked if CONFIG_MMCSD_MMCSUPPORT is enabled). This commit inserts nxsig_usleep wait if this check fails. This is to ensure the communication recovers from invalid response as this may take some time on some platforms ( samv7 for example). Following command for SDHC check may fail if sleep is not used. Signed-off-by: Michal Lenc <michallenc@seznam.cz>