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Diffstat (limited to 'static/netbsd/man4/man4.x86/powernow.4')
| -rw-r--r-- | static/netbsd/man4/man4.x86/powernow.4 | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/static/netbsd/man4/man4.x86/powernow.4 b/static/netbsd/man4/man4.x86/powernow.4 new file mode 100644 index 00000000..7b18019a --- /dev/null +++ b/static/netbsd/man4/man4.x86/powernow.4 @@ -0,0 +1,77 @@ +.\" $NetBSD: powernow.4,v 1.5 2020/11/14 20:04:46 wiz Exp $ +.\" +.\" Copyright (c) 2011 Jukka Ruohonen <jruohonen@iki.fi> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Neither the name of the author nor the names of any +.\" contributors may be used to endorse or promote products derived +.\" from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS +.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS +.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT 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 SUCH DAMAGE. +.\" +.Dd September 7, 2020 +.Dt POWERNOW 4 x86 +.Os +.Sh NAME +.Nm powernow +.Nd AMD PowerNow! and Cool'n'Quiet +.Sh SYNOPSIS +.Cd "powernow0 at cpu0" +.Sh DESCRIPTION +The +.Nm +driver supports +.Tn AMD +.Dq PowerNow! +and +.Dq Cool'n'Quiet +.Tn CPU +frequency scaling technologies. +The following +.Xr sysctl 8 +variables are available with +.Nm : +.Bl -tag -width "machdep.cpu.frequency.available" -offset 2n +.It Ic machdep.cpu.frequency.target +The target frequency of the +.Tn CPUs . +.It Ic machdep.cpu.frequency.current +The current frequency. +.It Ic machdep.cpu.frequency.available +The available frequencies. +.El +.Pp +Note, however, that these variables are +not guaranteed to exist in the future versions of +.Nx . +.Sh SEE ALSO +.Xr acpicpu 4 , +.Xr x86/est 4 , +.Xr x86/odcm 4 +.Sh CAVEATS +The +.Nm +driver is considered a legacy interface to +be used only with relatively old systems. +The driver supports only +.Tn AMD +processor families +.Tn K7 +(for instance, Duron, Athlon, and some Semprons) and +.Tn K8 +(namely, the early 64-bit family, including Athlon 64, Opteron, and Turion). |
