13722eb71SWarner Losh.\" 23722eb71SWarner Losh.\" Copyright (c) 2007 M. Warner Losh 33722eb71SWarner Losh.\" All rights reserved. 43722eb71SWarner Losh.\" 53722eb71SWarner Losh.\" Redistribution and use in source and binary forms, with or without 63722eb71SWarner Losh.\" modification, are permitted provided that the following conditions 73722eb71SWarner Losh.\" are met: 83722eb71SWarner Losh.\" 1. Redistributions of source code must retain the above copyright 93722eb71SWarner Losh.\" notice, this list of conditions and the following disclaimer. 103722eb71SWarner Losh.\" 2. The name of the author may not be used to endorse or promote products 113722eb71SWarner Losh.\" derived from this software without specific prior written permission. 123722eb71SWarner Losh.\" 133722eb71SWarner Losh.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 143722eb71SWarner Losh.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 153722eb71SWarner Losh.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 163722eb71SWarner Losh.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 173722eb71SWarner Losh.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 183722eb71SWarner Losh.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 193722eb71SWarner Losh.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 203722eb71SWarner Losh.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 213722eb71SWarner Losh.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 223722eb71SWarner Losh.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 233722eb71SWarner Losh.\" SUCH DAMAGE. 243722eb71SWarner Losh.\" 253722eb71SWarner Losh.\" $FreeBSD$ 263722eb71SWarner Losh.\" 27688e18b2SAlexander Motin.Dd October 8, 2008 283722eb71SWarner Losh.Dt MMC 4 293722eb71SWarner Losh.Os 303722eb71SWarner Losh.Sh NAME 313722eb71SWarner Losh.Nm mmc 323722eb71SWarner Losh.Nd MultiMediaCard and SD Card bus driver 333722eb71SWarner Losh.Sh SYNOPSIS 343722eb71SWarner Losh.Cd device mmc 353722eb71SWarner Losh.Sh DESCRIPTION 363722eb71SWarner LoshThe 373722eb71SWarner Losh.Nm 383722eb71SWarner Loshdriver implements the MMC and SD Card bus. 393722eb71SWarner LoshThe 403722eb71SWarner Losh.Nm 413722eb71SWarner Loshdriver supports all MMC and SD bridges in the system. 423722eb71SWarner LoshAll SD or MMC cards in the system attach to an instance of 433722eb71SWarner Losh.Nm . 443722eb71SWarner LoshThe 453722eb71SWarner Losh.Nm 463722eb71SWarner Loshbus typically has only one slot, and only memory cards. 473722eb71SWarner LoshMultiMediaCards exist only in memory. 483722eb71SWarner LoshSD Cards exist as memory, I/O, or combination cards. 493722eb71SWarner Losh.Sh SEE ALSO 502202f7a1SAlexander Motin.Xr at91_mci 4 , 51*923544aaSBaptiste Daroussin.Xr mmcsd 4 , 522202f7a1SAlexander Motin.Xr sdhci 4 533722eb71SWarner Losh.Rs 543722eb71SWarner Losh.%T "SD Specifications, Part 1, Physical Layer, Simplified Specification" 553722eb71SWarner Losh.Re 563722eb71SWarner Losh.Rs 573722eb71SWarner Losh.%T "The MultiMediaCard System Specification" 583722eb71SWarner Losh.Re 593722eb71SWarner Losh.Sh BUGS 603722eb71SWarner LoshSDIO cards currently do not work. 61