| Andre Prendel | 1915fb7 | 2009-09-15 17:18:12 +0200 | [diff] [blame^] | 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 |