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authorAndriy Gapon <avg@FreeBSD.org>2019-10-16 14:46:04 +0000
committerAndriy Gapon <avg@FreeBSD.org>2019-10-16 14:46:04 +0000
commitbc37ac7ea8dd10039688d7cd2cef1d079fd025ac (patch)
tree18d0f7350ecd8026162d3c7dd6985ceb88c51bfa /share/man/man4/wbwd.4
parent455d8009b468669020eb5dd2a209e9094eeda503 (diff)
downloadsrc-bc37ac7ea8dd10039688d7cd2cef1d079fd025ac.tar.gz
src-bc37ac7ea8dd10039688d7cd2cef1d079fd025ac.zip
wbwd: move to superio(4) bus
This allows to remove a bunch of low level code. Also, superio(4) provides safer interaction with other drivers that work with Super I/O configuration registers. Tested only on PCengines APU2: superio0: <Nuvoton NCT5104D/NCT6102D/NCT6106D (rev. B+)> at port 0x2e-0x2f on isa0 wbwd0: <Nuvoton NCT6102 (0xc4/0x53) Watchdog Timer> at WDT ldn 0x08 on superio0 The watchdog output is incorrectly wired on that system and the watchdog does not really do it its job, but the pulse can be seen with a signal analyzer. Reviewed by: delphij, bcr (man page) MFC after: 19 days Differential Revision: https://reviews.freebsd.org/D21979
Notes
Notes: svn path=/head/; revision=353645
Diffstat (limited to 'share/man/man4/wbwd.4')
-rw-r--r--share/man/man4/wbwd.410
1 files changed, 4 insertions, 6 deletions
diff --git a/share/man/man4/wbwd.4 b/share/man/man4/wbwd.4
index 800f627e34df..6ab2b7e2e0f5 100644
--- a/share/man/man4/wbwd.4
+++ b/share/man/man4/wbwd.4
@@ -25,16 +25,17 @@
.\"
.\" $FreeBSD$
.\"
-.Dd March 24, 2016
+.Dd October 16, 2019
.Dt WBWD 4
.Os
.Sh NAME
.Nm wbwd
.Nd device driver for Winbond/Nuvoton Super I/O chips watchdog timer
.Sh SYNOPSIS
-To compile this driver into the kernel, place the following line in your
+To compile this driver into the kernel, place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
+.Cd "device superio"
.Cd "device wbwd"
.Ed
.Pp
@@ -91,10 +92,6 @@ Nuvoton NCT6791
.It
Nuvoton NCT6792
.El
-.Pp
-Driver may be forced to attach to unknown chips by adding to
-.Pa /boot/device.hints :
-.Cd hint.wbwd.0.at="isa"
.Sh SYSCTL VARIABLES
The
.Nm
@@ -130,6 +127,7 @@ The
driver also provides further sysctl options that are hidden by default.
See the source code for more information.
.Sh SEE ALSO
+.Xr superio 4
.Xr watchdog 4 ,
.Xr device.hints 5 ,
.Xr watchdog 8 ,