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share/man/man4/wbwd.4
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
.\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
.\" | .\" | ||||
.\" $FreeBSD$ | .\" $FreeBSD$ | ||||
.\" | .\" | ||||
.Dd March 24, 2016 | .Dd October 11, 2019 | ||||
.Dt WBWD 4 | .Dt WBWD 4 | ||||
.Os | .Os | ||||
.Sh NAME | .Sh NAME | ||||
.Nm wbwd | .Nm wbwd | ||||
.Nd device driver for Winbond/Nuvoton Super I/O chips watchdog timer | .Nd device driver for Winbond/Nuvoton Super I/O chips watchdog timer | ||||
.Sh SYNOPSIS | .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 linen in your | ||||
kernel configuration file: | kernel configuration file: | ||||
.Bd -ragged -offset indent | .Bd -ragged -offset indent | ||||
.Cd "device superio" | |||||
.Cd "device wbwd" | .Cd "device wbwd" | ||||
.Ed | .Ed | ||||
.Pp | .Pp | ||||
Alternatively, to load the driver as a module at boot time, place the following | Alternatively, to load the driver as a module at boot time, place the following | ||||
line in | line in | ||||
.Xr loader.conf 5 : | .Xr loader.conf 5 : | ||||
.Bd -literal -offset indent | .Bd -literal -offset indent | ||||
wbwd_load="YES" | wbwd_load="YES" | ||||
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Nuvoton NCT6102 | Nuvoton NCT6102 | ||||
.It | .It | ||||
Nuvoton NCT6779 | Nuvoton NCT6779 | ||||
.It | .It | ||||
Nuvoton NCT6791 | Nuvoton NCT6791 | ||||
.It | .It | ||||
Nuvoton NCT6792 | Nuvoton NCT6792 | ||||
.El | .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 | .Sh SYSCTL VARIABLES | ||||
The | The | ||||
.Nm | .Nm | ||||
driver provides the following options as | driver provides the following options as | ||||
.Xr sysctl 8 | .Xr sysctl 8 | ||||
variables. | variables. | ||||
.Bl -tag -width "xxxxxx" | .Bl -tag -width "xxxxxx" | ||||
.It Va dev.wbwd.0.timeout_override | .It Va dev.wbwd.0.timeout_override | ||||
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This read-only value gives the state of some registers on last update. | This read-only value gives the state of some registers on last update. | ||||
.El | .El | ||||
.Pp | .Pp | ||||
The | The | ||||
.Nm | .Nm | ||||
driver also provides further sysctl options that are hidden by default. | driver also provides further sysctl options that are hidden by default. | ||||
See the source code for more information. | See the source code for more information. | ||||
.Sh SEE ALSO | .Sh SEE ALSO | ||||
.Xr superio 4 | |||||
.Xr watchdog 4 , | .Xr watchdog 4 , | ||||
.Xr device.hints 5 , | .Xr device.hints 5 , | ||||
.Xr watchdog 8 , | .Xr watchdog 8 , | ||||
.Xr watchdogd 8 , | .Xr watchdogd 8 , | ||||
.Xr watchdog 9 | .Xr watchdog 9 | ||||
.Sh HISTORY | .Sh HISTORY | ||||
The | The | ||||
.Nm | .Nm | ||||
driver first appeared in | driver first appeared in | ||||
.Fx 10.0 . | .Fx 10.0 . | ||||
.Sh AUTHORS | .Sh AUTHORS | ||||
.An -nosplit | .An -nosplit | ||||
This manual page was written by | This manual page was written by | ||||
.An Bjoern A. Zeeb Aq Mt bz@FreeBSD.org . | .An Bjoern A. Zeeb Aq Mt bz@FreeBSD.org . |