| 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' |
| Guenter Roeck | a63ee9d | 2014-04-22 16:13:17 -0700 | [diff] [blame] | 11 | Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f |
| Andre Prendel | 1915fb7 | 2009-09-15 17:18:12 +0200 | [diff] [blame] | 12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| 13 | * Texas Instruments TMP423 |
| 14 | Prefix: 'tmp423' |
| Guenter Roeck | a63ee9d | 2014-04-22 16:13:17 -0700 | [diff] [blame] | 15 | Addresses scanned: I2C 0x4c and 0x4d |
| Andre Prendel | 1915fb7 | 2009-09-15 17:18:12 +0200 | [diff] [blame] | 16 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| Guenter Roeck | 05c77ab | 2014-04-12 16:12:06 -0700 | [diff] [blame] | 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 |
| Andre Prendel | 1915fb7 | 2009-09-15 17:18:12 +0200 | [diff] [blame] | 25 | |
| 26 | Authors: |
| 27 | Andre Prendel <andre.prendel@gmx.de> |
| 28 | |
| 29 | Description |
| 30 | ----------- |
| 31 | |
| Guenter Roeck | 05c77ab | 2014-04-12 16:12:06 -0700 | [diff] [blame] | 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. |
| Andre Prendel | 1915fb7 | 2009-09-15 17:18:12 +0200 | [diff] [blame] | 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 |