xref: /linux/Documentation/hwmon/lm92.rst (revision b7019ac550eb3916f34d79db583e9b7ea2524afa)
1Kernel driver lm92
2==================
3
4Supported chips:
5
6  * National Semiconductor LM92
7
8    Prefix: 'lm92'
9
10    Addresses scanned: I2C 0x48 - 0x4b
11
12    Datasheet: http://www.national.com/pf/LM/LM92.html
13
14  * National Semiconductor LM76
15
16    Prefix: 'lm92'
17
18    Addresses scanned: none, force parameter needed
19
20    Datasheet: http://www.national.com/pf/LM/LM76.html
21
22  * Maxim MAX6633/MAX6634/MAX6635
23
24    Prefix: 'max6635'
25
26    Addresses scanned: none, force parameter needed
27
28    Datasheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074
29
30
31Authors:
32       - Abraham van der Merwe <abraham@2d3d.co.za>
33       - Jean Delvare <jdelvare@suse.de>
34
35
36Description
37-----------
38
39This driver implements support for the National Semiconductor LM92
40temperature sensor.
41
42Each LM92 temperature sensor supports a single temperature sensor. There are
43alarms for high, low, and critical thresholds. There's also an hysteresis to
44control the thresholds for resetting alarms.
45
46Support was added later for the LM76 and Maxim MAX6633/MAX6634/MAX6635,
47which are mostly compatible. They have not all been tested, so you
48may need to use the force parameter.
49