1*2042f022SRobert Mustacchi.\" 2*2042f022SRobert Mustacchi.\" This file and its contents are supplied under the terms of the 3*2042f022SRobert Mustacchi.\" Common Development and Distribution License ("CDDL"), version 1.0. 4*2042f022SRobert Mustacchi.\" You may only use this file in accordance with the terms of version 5*2042f022SRobert Mustacchi.\" 1.0 of the CDDL. 6*2042f022SRobert Mustacchi.\" 7*2042f022SRobert Mustacchi.\" A full copy of the text of the CDDL should have accompanied this 8*2042f022SRobert Mustacchi.\" source. A copy of the CDDL is also available via the Internet at 9*2042f022SRobert Mustacchi.\" http://www.illumos.org/license/CDDL. 10*2042f022SRobert Mustacchi.\" 11*2042f022SRobert Mustacchi.\" 12*2042f022SRobert Mustacchi.\" Copyright 2025 Oxide Computer Company 13*2042f022SRobert Mustacchi.\" 14*2042f022SRobert Mustacchi.Dd September 21, 2025 15*2042f022SRobert Mustacchi.Dt LM7X 4D 16*2042f022SRobert Mustacchi.Os 17*2042f022SRobert Mustacchi.Sh NAME 18*2042f022SRobert Mustacchi.Nm lm7x 19*2042f022SRobert Mustacchi.Nd lm75, lm76, and lm77 series I2C temperature sensor driver 20*2042f022SRobert Mustacchi.Sh SYNOPSIS 21*2042f022SRobert Mustacchi.Pa /dev/sensors/temperature/i2c/lm7x* 22*2042f022SRobert Mustacchi.Sh DESCRIPTION 23*2042f022SRobert MustacchiThe 24*2042f022SRobert Mustacchi.Nm 25*2042f022SRobert Mustacchidriver supports devices compatible with the National Semiconductor LM75, 26*2042f022SRobert MustacchiLM76, and LM77 I2C temperature sensor devices. 27*2042f022SRobert MustacchiEach device supports a single temperature sensor that is registered with 28*2042f022SRobert Mustacchithe kernel sensor framework and an interface to them is provided by 29*2042f022SRobert Mustacchi.Xr ksensor 4D . 30*2042f022SRobert Mustacchi.Pp 31*2042f022SRobert MustacchiThe LM75 and LM77 generally measure in units of 1/2 degree Celsius while 32*2042f022SRobert Mustacchithe LM76 measures in units of 1/16th degree Celsius. 33*2042f022SRobert MustacchiTemperature information is available to the system through the fault 34*2042f022SRobert Mustacchimanagement architecture 35*2042f022SRobert Mustacchi.Pq FMA . 36*2042f022SRobert MustacchiThe file system location and programming interface to the 37*2042f022SRobert Mustacchi.Nm 38*2042f022SRobert Mustacchitemperature sensors are considered 39*2042f022SRobert Mustacchi.Sy volatile . 40*2042f022SRobert Mustacchi.Sh FILES 41*2042f022SRobert Mustacchi.Bl -tag -width Pa 42*2042f022SRobert Mustacchi.It Pa /dev/sensors/temperature/i2c/lm7x* 43*2042f022SRobert MustacchiTemperature sensor character device file. 44*2042f022SRobert Mustacchi.It Pa /kernel/drv/amd64/lm7x 45*2042f022SRobert MustacchiDevice driver (x86) 46*2042f022SRobert Mustacchi.El 47*2042f022SRobert Mustacchi.Sh SEE ALSO 48*2042f022SRobert Mustacchi.Xr ksensor 4D , 49*2042f022SRobert Mustacchi.Xr i2cadm 8 50