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MMC(4)			    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.

BUGS
       SDIO cards currently do not work.

FreeBSD	14.3			 June 10, 2021				MMC(4)

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<https://man.freebsd.org/cgi/man.cgi?query=mmc&sektion=4&manpath=FreeBSD+14.3-RELEASE+and+Ports>

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