DragonFly On-Line Manual Pages
MMC(4) DragonFly Kernel Interfaces Manual MMC(4)
NAME
mmc -- MultiMediaCard and SD Card bus driver
SYNOPSIS
device mmc
DESCRIPTION
The mmc driver implements the MMC and SD Card bus. The mmc driver sup-
ports all MMC and SD bridges in the system. All SD or MMC cards in the
system attach to an instance of mmc. The mmc bus typically has only one
slot, and only memory cards. MultiMediaCards exist only in memory. SD
Cards exist as memory, I/O, or combination cards.
SEE ALSO
mmcsd(4), sdhci(4)
SD Specifications, Part 1, Physical Layer, Simplified Specification.
The MultiMediaCard System Specification.
HISTORY
The mmc driver was imported from FreeBSD into DragonFly 2.7.
BUGS
SDIO cards currently do not work.
DragonFly 3.5 April 16, 2010 DragonFly 3.5