1*86d7f5d3SJohn Marino.\" 2*86d7f5d3SJohn Marino.\" Copyright (c) 2007 M. Warner Losh 3*86d7f5d3SJohn Marino.\" All rights reserved. 4*86d7f5d3SJohn Marino.\" 5*86d7f5d3SJohn Marino.\" Redistribution and use in source and binary forms, with or without 6*86d7f5d3SJohn Marino.\" modification, are permitted provided that the following conditions 7*86d7f5d3SJohn Marino.\" are met: 8*86d7f5d3SJohn Marino.\" 1. Redistributions of source code must retain the above copyright 9*86d7f5d3SJohn Marino.\" notice, this list of conditions and the following disclaimer. 10*86d7f5d3SJohn Marino.\" 2. The name of the author may not be used to endorse or promote products 11*86d7f5d3SJohn Marino.\" derived from this software without specific prior written permission. 12*86d7f5d3SJohn Marino.\" 13*86d7f5d3SJohn Marino.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14*86d7f5d3SJohn Marino.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15*86d7f5d3SJohn Marino.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16*86d7f5d3SJohn Marino.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17*86d7f5d3SJohn Marino.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18*86d7f5d3SJohn Marino.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19*86d7f5d3SJohn Marino.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20*86d7f5d3SJohn Marino.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21*86d7f5d3SJohn Marino.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22*86d7f5d3SJohn Marino.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23*86d7f5d3SJohn Marino.\" SUCH DAMAGE. 24*86d7f5d3SJohn Marino.\" 25*86d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man4/mmc.4,v 1.3 2008/10/22 09:04:05 mav Exp $ 26*86d7f5d3SJohn Marino.\" 27*86d7f5d3SJohn Marino.Dd April 16, 2010 28*86d7f5d3SJohn Marino.Dt MMC 4 29*86d7f5d3SJohn Marino.Os 30*86d7f5d3SJohn Marino.Sh NAME 31*86d7f5d3SJohn Marino.Nm mmc 32*86d7f5d3SJohn Marino.Nd MultiMediaCard and SD Card bus driver 33*86d7f5d3SJohn Marino.Sh SYNOPSIS 34*86d7f5d3SJohn Marino.Cd device mmc 35*86d7f5d3SJohn Marino.Sh DESCRIPTION 36*86d7f5d3SJohn MarinoThe 37*86d7f5d3SJohn Marino.Nm 38*86d7f5d3SJohn Marinodriver implements the MMC and SD Card bus. 39*86d7f5d3SJohn MarinoThe 40*86d7f5d3SJohn Marino.Nm 41*86d7f5d3SJohn Marinodriver supports all MMC and SD bridges in the system. 42*86d7f5d3SJohn MarinoAll SD or MMC cards in the system attach to an instance of 43*86d7f5d3SJohn Marino.Nm . 44*86d7f5d3SJohn MarinoThe 45*86d7f5d3SJohn Marino.Nm 46*86d7f5d3SJohn Marinobus typically has only one slot, and only memory cards. 47*86d7f5d3SJohn MarinoMultiMediaCards exist only in memory. 48*86d7f5d3SJohn MarinoSD Cards exist as memory, I/O, or combination cards. 49*86d7f5d3SJohn Marino.Sh SEE ALSO 50*86d7f5d3SJohn Marino.Xr mmcsd 4 , 51*86d7f5d3SJohn Marino.Xr sdhci 4 52*86d7f5d3SJohn Marino.Rs 53*86d7f5d3SJohn Marino.%T "SD Specifications, Part 1, Physical Layer, Simplified Specification" 54*86d7f5d3SJohn Marino.Re 55*86d7f5d3SJohn Marino.Rs 56*86d7f5d3SJohn Marino.%T "The MultiMediaCard System Specification" 57*86d7f5d3SJohn Marino.Re 58*86d7f5d3SJohn Marino.Sh HISTORY 59*86d7f5d3SJohn MarinoThe 60*86d7f5d3SJohn Marino.Nm 61*86d7f5d3SJohn Marinodriver was imported from 62*86d7f5d3SJohn Marino.Fx 63*86d7f5d3SJohn Marinointo 64*86d7f5d3SJohn Marino.Dx 2.7 . 65*86d7f5d3SJohn Marino.Sh BUGS 66*86d7f5d3SJohn MarinoSDIO cards currently do not work. 67