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Command: mmc | Section: 4 | Source: FreeBSD | File: mmc.4.gz
MMC(4) FreeBSD 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
supports 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 14.1-RELEASE-p8 June 10, 2021 FreeBSD 14.1-RELEASE-p8