svn commit: r187339 - head/share/man/man4
Alexander Motin
mav at FreeBSD.org
Fri Jan 16 11:28:26 PST 2009
Author: mav
Date: Fri Jan 16 19:28:25 2009
New Revision: 187339
URL: http://svn.freebsd.org/changeset/base/187339
Log:
Add some information in SYNOPSIS, HARDWARE and BUGS sections.
Modified:
head/share/man/man4/sdhci.4
Modified: head/share/man/man4/sdhci.4
==============================================================================
--- head/share/man/man4/sdhci.4 Fri Jan 16 19:02:08 2009 (r187338)
+++ head/share/man/man4/sdhci.4 Fri Jan 16 19:28:25 2009 (r187339)
@@ -24,16 +24,29 @@
.\"
.\" $FreeBSD$
.\"
-.Dd October 22, 2008
+.Dd January 14, 2009
.Dt SDHCI 4
.Os
.Sh NAME
.Nm sdhci
.Nd PCI SD Host Controller bridge driver
.Sh SYNOPSIS
-.Cd device mmc
-.Cd device mmcsd
-.Cd device sdhci
+To compile this driver into the kernel, place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device mmc"
+.Cd "device mmcsd"
+.Cd "device sdhci"
+.Ed
+.Pp
+Alternatively, to load the driver as a module at boot time, place the
+following lines in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+mmc_load="YES"
+mmcsd_load="YES"
+sdhci_load="YES"
+.Ed
.Sh DESCRIPTION
The
.Nm
@@ -42,6 +55,22 @@ SD Host Controller Specification.
Driver supports up to six high speed 4bit MMC/SD slots per controller.
Driver attaches mmc bus to the respective slot on card insertion and
detaches it on card removing.
+.Sh HARDWARE
+The
+.Nm
+driver supports different specification compatible chips. The following
+chips have been verified to work:
+.Pp
+.Bl -bullet -compact
+.It
+ENE CB712
+.It
+ENE CB714
+.It
+RICOH R5C822
+.It
+TI PCIXX21/XX11
+.El
.Sh SEE ALSO
.Xr mmc 4 ,
.Xr mmcsd 4
@@ -50,3 +79,8 @@ detaches it on card removing.
.Re
.Sh AUTHORS
.An Alexander Motin Aq mav at FreeBSD.org .
+.Sh BUGS
+Many of existing SD controller chips have some nonstandard requirements,
+proprietary registers and hardware bugs, requiring additional handling.
+ENE chips are handled to work fine, while some revisions of RICOH and TI
+controllers still don't see cards without some additional initialization.
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