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Commit | Line | Data |
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1915fb70 AP |
1 | Kernel driver tmp421 |
2 | ==================== | |
3 | ||
4 | Supported chips: | |
5 | * Texas Instruments TMP421 | |
6 | Prefix: 'tmp421' | |
7 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
8 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
9 | * Texas Instruments TMP422 | |
10 | Prefix: 'tmp422' | |
11 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
13 | * Texas Instruments TMP423 | |
14 | Prefix: 'tmp423' | |
15 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
16 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
17 | ||
18 | Authors: | |
19 | Andre Prendel <andre.prendel@gmx.de> | |
20 | ||
21 | Description | |
22 | ----------- | |
23 | ||
24 | This driver implements support for Texas Instruments TMP421, TMP422 | |
25 | and TMP423 temperature sensor chips. These chips implement one local | |
26 | and up to one (TMP421), up to two (TMP422) or up to three (TMP423) | |
27 | remote sensors. Temperature is measured in degrees Celsius. The chips | |
28 | are wired over I2C/SMBus and specified over a temperature range of -40 | |
29 | to +125 degrees Celsius. Resolution for both the local and remote | |
30 | channels is 0.0625 degree C. | |
31 | ||
32 | The chips support only temperature measurement. The driver exports | |
33 | the temperature values via the following sysfs files: | |
34 | ||
35 | temp[1-4]_input | |
36 | temp[2-4]_fault |