svn commit: r187339 - head/share/man/man4
mav at FreeBSD.org
Fri Jan 16 11:28:26 PST 2009
Date: Fri Jan 16 19:28:25 2009
New Revision: 187339
Add some information in SYNOPSIS, HARDWARE and BUGS sections.
--- 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 @@
-.Dd October 22, 2008
+.Dd January 14, 2009
.Dt SDHCI 4
.Nd PCI SD Host Controller bridge driver
-.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"
+Alternatively, to load the driver as a module at boot time, place the
+following lines in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
@@ -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.
+driver supports different specification compatible chips. The following
+chips have been verified to work:
+.Bl -bullet -compact
.Sh SEE ALSO
.Xr mmc 4 ,
.Xr mmcsd 4
@@ -50,3 +79,8 @@ detaches it on card removing.
.An Alexander Motin Aq mav at FreeBSD.org .
+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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