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.\" $OpenBSD: rtsx.4,v 1.10 2017/09/06 13:07:38 jcs Exp $
.\"
.\" Theo de Raadt, 2006. Public Domain.
.\" Stefan Sperling, 2012. Public Domain.
.\"
.Dd $Mdocdate: September 6 2017 $
.Dt RTSX 4
.Os
.Sh NAME
.Nm rtsx
.Nd Realtek SD card reader
.Sh SYNOPSIS
.Cd "rtsx* at pci?"
.Cd "sdmmc* at rtsx?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the Realtek RTS5209, RTS5227, RTS5229,
RTS522A, RTS5249, RTS525A, RTL8402, RTL8411, and RTL8411B SD card readers.
.Pp
The
.Xr sdmmc 4
subsystem performs SD/MMC transactions to communicate with SD
or SDHC devices inserted into the SD slot.
.Sh SEE ALSO
.Xr intro 4 ,
.Xr sdmmc 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 5.3 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Stefan Sperling Aq Mt stsp@openbsd.org .
.Sh BUGS
The
.Nm
driver does not support MS (Memory Stick) and xD (Extreme Digital) devices
even though the hardware supports them.
.Pp
Support for SDIO interrupts is not implemented.
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