Commit | Line | Data |
---|---|---|
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' | |
a63ee9d8 | 11 | Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f |
1915fb70 AP |
12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
13 | * Texas Instruments TMP423 | |
14 | Prefix: 'tmp423' | |
a63ee9d8 | 15 | Addresses scanned: I2C 0x4c and 0x4d |
1915fb70 | 16 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
05c77ab2 GR |
17 | * Texas Instruments TMP441 |
18 | Prefix: 'tmp441' | |
19 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
20 | Datasheet: http://www.ti.com/product/tmp441 | |
21 | * Texas Instruments TMP442 | |
22 | Prefix: 'tmp442' | |
23 | Addresses scanned: I2C 0x4c and 0x4d | |
24 | Datasheet: http://www.ti.com/product/tmp442 | |
1915fb70 AP |
25 | |
26 | Authors: | |
27 | Andre Prendel <andre.prendel@gmx.de> | |
28 | ||
29 | Description | |
30 | ----------- | |
31 | ||
05c77ab2 GR |
32 | This driver implements support for Texas Instruments TMP421, TMP422, |
33 | TMP423, TMP441, and TMP442 temperature sensor chips. These chips | |
34 | implement one local and up to one (TMP421, TMP441), up to two (TMP422, | |
35 | TMP442) or up to three (TMP423) remote sensors. Temperature is measured | |
36 | in degrees Celsius. The chips are wired over I2C/SMBus and specified | |
37 | over a temperature range of -40 to +125 degrees Celsius. Resolution | |
38 | for both the local and remote channels is 0.0625 degree C. | |
1915fb70 AP |
39 | |
40 | The chips support only temperature measurement. The driver exports | |
41 | the temperature values via the following sysfs files: | |
42 | ||
43 | temp[1-4]_input | |
44 | temp[2-4]_fault |