aboutsummaryrefslogtreecommitdiff
path: root/Documentation/hwmon/lm92.rst
blob: c131b923ed36e2fad4efe0452e73f3275a67d8ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Kernel driver lm92
==================

Supported chips:

  * National Semiconductor LM92

    Prefix: 'lm92'

    Addresses scanned: I2C 0x48 - 0x4b

    Datasheet: http://www.national.com/pf/LM/LM92.html

  * National Semiconductor LM76

    Prefix: 'lm92'

    Addresses scanned: none, force parameter needed

    Datasheet: http://www.national.com/pf/LM/LM76.html

  * Maxim MAX6633/MAX6634/MAX6635

    Prefix: 'max6635'

    Addresses scanned: none, force parameter needed

    Datasheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074


Authors:
       - Abraham van der Merwe <abraham@2d3d.co.za>
       - Jean Delvare <jdelvare@suse.de>


Description
-----------

This driver implements support for the National Semiconductor LM92
temperature sensor.

Each LM92 temperature sensor supports a single temperature sensor. There are
alarms for high, low, and critical thresholds. There's also an hysteresis to
control the thresholds for resetting alarms.

Support was added later for the LM76 and Maxim MAX6633/MAX6634/MAX6635,
which are mostly compatible. They have not all been tested, so you
may need to use the force parameter.