projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1915fb70 AP |
1 | Kernel driver tmp421 |
| 2 | ==================== | |
| 3 | ||
| 4 | Supported chips: | |
| b04f2f7d | 5 | |
| 1915fb70 | 6 | * Texas Instruments TMP421 |
| b04f2f7d | 7 | |
| 1915fb70 | 8 | Prefix: 'tmp421' |
| b04f2f7d | 9 | |
| 1915fb70 | 10 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f |
| b04f2f7d | 11 | |
| 1915fb70 | 12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| b04f2f7d | 13 | |
| 1915fb70 | 14 | * Texas Instruments TMP422 |
| b04f2f7d | 15 | |
| 1915fb70 | 16 | Prefix: 'tmp422' |
| b04f2f7d | 17 | |
| a63ee9d8 | 18 | Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f |
| b04f2f7d | 19 | |
| 1915fb70 | 20 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| b04f2f7d | 21 | |
| 1915fb70 | 22 | * Texas Instruments TMP423 |
| b04f2f7d | 23 | |
| 1915fb70 | 24 | Prefix: 'tmp423' |
| b04f2f7d | 25 | |
| a63ee9d8 | 26 | Addresses scanned: I2C 0x4c and 0x4d |
| b04f2f7d | 27 | |
| 1915fb70 | 28 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| b04f2f7d | 29 | |
| 05c77ab2 | 30 | * Texas Instruments TMP441 |
| b04f2f7d | 31 | |
| 05c77ab2 | 32 | Prefix: 'tmp441' |
| b04f2f7d | 33 | |
| 05c77ab2 | 34 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f |
| b04f2f7d | 35 | |
| 05c77ab2 | 36 | Datasheet: http://www.ti.com/product/tmp441 |
| b04f2f7d | 37 | |
| 05c77ab2 | 38 | * Texas Instruments TMP442 |
| b04f2f7d | 39 | |
| 05c77ab2 | 40 | Prefix: 'tmp442' |
| b04f2f7d | 41 | |
| 05c77ab2 | 42 | Addresses scanned: I2C 0x4c and 0x4d |
| b04f2f7d | 43 | |
| 05c77ab2 | 44 | Datasheet: http://www.ti.com/product/tmp442 |
| 1915fb70 AP |
45 | |
| 46 | Authors: | |
| b04f2f7d | 47 | |
| 1915fb70 AP |
48 | Andre Prendel <andre.prendel@gmx.de> |
| 49 | ||
| 50 | Description | |
| 51 | ----------- | |
| 52 | ||
| 05c77ab2 GR |
53 | This driver implements support for Texas Instruments TMP421, TMP422, |
| 54 | TMP423, TMP441, and TMP442 temperature sensor chips. These chips | |
| 55 | implement one local and up to one (TMP421, TMP441), up to two (TMP422, | |
| 56 | TMP442) or up to three (TMP423) remote sensors. Temperature is measured | |
| 57 | in degrees Celsius. The chips are wired over I2C/SMBus and specified | |
| 58 | over a temperature range of -40 to +125 degrees Celsius. Resolution | |
| 59 | for both the local and remote channels is 0.0625 degree C. | |
| 1915fb70 AP |
60 | |
| 61 | The chips support only temperature measurement. The driver exports | |
| 62 | the temperature values via the following sysfs files: | |
| 63 | ||
| b04f2f7d MCC |
64 | **temp[1-4]_input** |
| 65 | ||
| 66 | **temp[2-4]_fault** |