1.\" $OpenBSD: rktemp.4,v 1.4 2020/06/20 21:16:14 jmc Exp $ 2.\" 3.\" Copyright (c) 2016 Mark Kettenis <kettenis@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: June 20 2020 $ 18.Dt RKTEMP 4 19.Os 20.Sh NAME 21.Nm rktemp 22.Nd Rockchip temperature monitor 23.Sh SYNOPSIS 24.Cd "rktemp* at fdt?" 25.Sh DESCRIPTION 26The 27.Nm 28driver provides support for the temperature sensor found on the 29Rockchip RK3288, RK3328 and RK3399 SoCs. 30It configures the SoC to reset itself if the temperature raises above 31a certain temperature to protect it from damage caused by overheating. 32.Pp 33Sensor values are made available through the 34.Xr sysctl 8 35interface. 36.Sh SEE ALSO 37.Xr intro 4 , 38.Xr sensorsd 8 , 39.Xr sysctl 8 40.Sh HISTORY 41The 42.Nm 43driver first appeared in 44.Ox 6.2 . 45.Sh AUTHORS 46.An -nosplit 47The 48.Nm 49driver was written by 50.An Mark Kettenis Aq Mt kettenis@openbsd.org . 51