186d7f5d3SJohn Marino.\" 286d7f5d3SJohn Marino.\" Copyright (c) 2007 M. Warner Losh 386d7f5d3SJohn Marino.\" All rights reserved. 486d7f5d3SJohn Marino.\" 586d7f5d3SJohn Marino.\" Redistribution and use in source and binary forms, with or without 686d7f5d3SJohn Marino.\" modification, are permitted provided that the following conditions 786d7f5d3SJohn Marino.\" are met: 886d7f5d3SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 986d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer. 1086d7f5d3SJohn Marino.\" 2. The name of the author may not be used to endorse or promote products 1186d7f5d3SJohn Marino.\" derived from this software without specific prior written permission. 1286d7f5d3SJohn Marino.\" 1386d7f5d3SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1486d7f5d3SJohn Marino.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1586d7f5d3SJohn Marino.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1686d7f5d3SJohn Marino.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1786d7f5d3SJohn Marino.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1886d7f5d3SJohn Marino.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1986d7f5d3SJohn Marino.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2086d7f5d3SJohn Marino.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2186d7f5d3SJohn Marino.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2286d7f5d3SJohn Marino.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2386d7f5d3SJohn Marino.\" SUCH DAMAGE. 2486d7f5d3SJohn Marino.\" 2586d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man4/mmc.4,v 1.3 2008/10/22 09:04:05 mav Exp $ 2686d7f5d3SJohn Marino.\" 2786d7f5d3SJohn Marino.Dd April 16, 2010 2886d7f5d3SJohn Marino.Dt MMC 4 2986d7f5d3SJohn Marino.Os 3086d7f5d3SJohn Marino.Sh NAME 3186d7f5d3SJohn Marino.Nm mmc 3286d7f5d3SJohn Marino.Nd MultiMediaCard and SD Card bus driver 3386d7f5d3SJohn Marino.Sh SYNOPSIS 3486d7f5d3SJohn Marino.Cd device mmc 3586d7f5d3SJohn Marino.Sh DESCRIPTION 3686d7f5d3SJohn MarinoThe 3786d7f5d3SJohn Marino.Nm 3886d7f5d3SJohn Marinodriver implements the MMC and SD Card bus. 3986d7f5d3SJohn MarinoThe 4086d7f5d3SJohn Marino.Nm 4186d7f5d3SJohn Marinodriver supports all MMC and SD bridges in the system. 4286d7f5d3SJohn MarinoAll SD or MMC cards in the system attach to an instance of 4386d7f5d3SJohn Marino.Nm . 4486d7f5d3SJohn MarinoThe 4586d7f5d3SJohn Marino.Nm 4686d7f5d3SJohn Marinobus typically has only one slot, and only memory cards. 4786d7f5d3SJohn MarinoMultiMediaCards exist only in memory. 4886d7f5d3SJohn MarinoSD Cards exist as memory, I/O, or combination cards. 4986d7f5d3SJohn Marino.Sh SEE ALSO 5086d7f5d3SJohn Marino.Xr mmcsd 4 , 5186d7f5d3SJohn Marino.Xr sdhci 4 5286d7f5d3SJohn Marino.Rs 5386d7f5d3SJohn Marino.%T "SD Specifications, Part 1, Physical Layer, Simplified Specification" 5486d7f5d3SJohn Marino.Re 5586d7f5d3SJohn Marino.Rs 5686d7f5d3SJohn Marino.%T "The MultiMediaCard System Specification" 5786d7f5d3SJohn Marino.Re 5886d7f5d3SJohn Marino.Sh HISTORY 5986d7f5d3SJohn MarinoThe 6086d7f5d3SJohn Marino.Nm 6186d7f5d3SJohn Marinodriver was imported from 6286d7f5d3SJohn Marino.Fx 6386d7f5d3SJohn Marinointo 6486d7f5d3SJohn Marino.Dx 2.7 . 6586d7f5d3SJohn Marino.Sh BUGS 6686d7f5d3SJohn MarinoSDIO cards currently do not work. 67