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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

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