1.\" $OpenBSD: ampchwm.4,v 1.2 2023/12/11 15:21:15 jmc Exp $ 2.\" 3.\" Copyright (c) 2023 Claudio Jeker <claudio@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: December 11 2023 $ 18.Dt AMPCHWM 4 arm64 19.Os 20.Sh NAME 21.Nm ampchwm 22.Nd Ampere Altra fine-grained power telemetry 23.Sh SYNOPSIS 24.Cd "ampchwm* at acpi?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for the per-core power telemetry firmware interface 29found on the Ampere Altra SoC. 30.Pp 31Sensor values are made available through the 32.Xr sysctl 8 33interface. 34.Sh SEE ALSO 35.Xr intro 4 , 36.Xr sensorsd 8 , 37.Xr sysctl 8 38.Sh HISTORY 39The 40.Nm 41driver first appeared in 42.Ox 7.5 . 43.Sh AUTHORS 44.An -nosplit 45The 46.Nm 47driver was written by 48.An Claudio Jeker Aq Mt claudio@openbsd.org . 49