MMC/SD card support

modulename: mmc.ko

and/or

mmc_core.ko

configname: CONFIG_MMC

Linux Kernel Configuration
└─>Device Drivers
└─>MMC/SD card support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
MMC is the "multi-media card" bus protocol.

If you want MMC support, you should say Y here and also
to the specific driver for your MMC interface.

source code: