sdtemp.4 revision 1.1 $NetBSD: sdtemp.4,v 1.1 2009/05/09 15:04:25 pgoyette Exp $
Copyright (c) 2008 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
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. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 May 9, 2009 .Dt SDTEMP 4 .Os .Sh NAME .Nm sdtemp .Nd Microchip Technology MCP9805/98242 and compatible memory module temperature sensors .Sh SYNOPSIS .Cd "sdtemp0 at iic? addr 0x18" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Microchip Technology MCP9805/98242 and other chips that conform to JEDEC Standard 21-C section 4.7. Memory module temperature sensors are optional on DDR2 and DDR3 SDRAM DIMMs. Sensors provided by this driver are accessed through the .Xr envsys 4 API. The on-chip thresholds for the Alarm Window and Critical level are accessed through the .Xr sysctl 8 utility.
Copyright (c) 2008 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
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. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 May 9, 2009 .Dt SDTEMP 4 .Os .Sh NAME .Nm sdtemp .Nd Microchip Technology MCP9805/98242 and compatible memory module temperature sensors .Sh SYNOPSIS .Cd "sdtemp0 at iic? addr 0x18" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Microchip Technology MCP9805/98242 and other chips that conform to JEDEC Standard 21-C section 4.7. Memory module temperature sensors are optional on DDR2 and DDR3 SDRAM DIMMs. Sensors provided by this driver are accessed through the .Xr envsys 4 API. The on-chip thresholds for the Alarm Window and Critical level are accessed through the .Xr sysctl 8 utility.
p The .Nm supports temperature ranges from -256 to +255 degrees C. .Sh HARDWARE Chips supported by the .Nm driver include:
p l -item -offset indent t .Tn Microchip Technology .Em MCP9805 t .Tn Microchip Technology .Em MCP98242 t .Tn Analog Devices .Em ADT7408 t .Tn NXP Semiconductors .Em SE97 t .Tn NXP Semiconductors .Em SE98 t .Tn STmicroelectronics .Em STTS424E02-DA/DN t .Tn Catalyst .Em CAT34TS02 t .Tn Catalyst .Em CAT6095 .El .Sh SEE ALSO .Xr envsys 4 , .Xr envstat 8 , .Xr sysctl 8 .Sh HISTORY The .Nm device appeared in .Nx 6.0 . .Sh BUGS Interrupt support is unimplemented.
Indexes created Sat Oct 18 08:10:09 GMT 2025