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Document hw.i8254.freq tunable and machdep.i8254_freq sysctl.

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Alexander Motin 2010-09-18 07:45:54 +00:00
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share/man/man4/attimer.4
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@ -42,6 +42,11 @@ Default value is 1.
.It Va hint.attimer. Ns Ar X Ns Va .timecounter
controls time counter functionality support. Setting to 0, disables it.
Default value is 1.
.It Va hw.i8254.freq
allows to override default counter frequency.
The same value is also available in run-time via
.Va machdep.i8254_freq
sysctl.
.El
.Sh DESCRIPTION
This driver uses i8254 Programmable Interval Timer (AT Timer) hardware