# # MMC core configuration # config MMC_UNSAFE_RESUME bool "Assume MMC/SD cards are non-removable (DANGEROUS)" help If you say Y here, the MMC layer will assume that all cards stayed in their respective slots during the suspend. The normal behaviour is to remove them at suspend and redetecting them at resume. Breaking this assumption will in most cases result in data corruption. This option is usually just for embedded systems which use a MMC/SD card for rootfs. Most people should say N here. This option sets a default which can be overridden by the module parameter "removable=0" or "removable=1". config MMC_CLKGATE bool "MMC host clock gating" help This will attempt to aggressively gate the clock to the MMC card. This is done to save power due to gating off the logic and bus noise when the MMC card is not in use. Your host driver has to support handling this in order for it to be of any use. If unsure, say N.