| Kernel driver tmp421 |
| ==================== |
| |
| Supported chips: |
| |
| * Texas Instruments TMP421 |
| |
| Prefix: 'tmp421' |
| |
| Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f |
| |
| Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| |
| * Texas Instruments TMP422 |
| |
| Prefix: 'tmp422' |
| |
| Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f |
| |
| Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| |
| * Texas Instruments TMP423 |
| |
| Prefix: 'tmp423' |
| |
| Addresses scanned: I2C 0x4c and 0x4d |
| |
| Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html |
| |
| * Texas Instruments TMP441 |
| |
| Prefix: 'tmp441' |
| |
| Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f |
| |
| Datasheet: https://www.ti.com/product/tmp441 |
| |
| * Texas Instruments TMP442 |
| |
| Prefix: 'tmp442' |
| |
| Addresses scanned: I2C 0x4c and 0x4d |
| |
| Datasheet: https://www.ti.com/product/tmp442 |
| |
| Authors: |
| |
| Andre Prendel <andre.prendel@gmx.de> |
| |
| Description |
| ----------- |
| |
| This driver implements support for Texas Instruments TMP421, TMP422, |
| TMP423, TMP441, and TMP442 temperature sensor chips. These chips |
| implement one local and up to one (TMP421, TMP441), up to two (TMP422, |
| TMP442) or up to three (TMP423) remote sensors. Temperature is measured |
| in degrees Celsius. The chips are wired over I2C/SMBus and specified |
| over a temperature range of -40 to +125 degrees Celsius. Resolution |
| for both the local and remote channels is 0.0625 degree C. |
| |
| The chips support only temperature measurement. The driver exports |
| the temperature values via the following sysfs files: |
| |
| **temp[1-4]_input** |
| |
| **temp[2-4]_fault** |
| |
| Each sensor can be individually disabled via Devicetree or from sysfs |
| via: |
| |
| **temp[1-4]_enable** |
| |
| If labels were specified in Devicetree, additional sysfs files will |
| be present: |
| |
| **temp[1-4]_label** |
