1Kernel driver tmp421 2==================== 3 4Supported chips: 5 6 * Texas Instruments TMP421 7 8 Prefix: 'tmp421' 9 10 Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f 11 12 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html 13 14 * Texas Instruments TMP422 15 16 Prefix: 'tmp422' 17 18 Addresses scanned: I2C 0x4c, 0x4d, 0x4e and 0x4f 19 20 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html 21 22 * Texas Instruments TMP423 23 24 Prefix: 'tmp423' 25 26 Addresses scanned: I2C 0x4c and 0x4d 27 28 Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html 29 30 * Texas Instruments TMP441 31 32 Prefix: 'tmp441' 33 34 Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f 35 36 Datasheet: https://www.ti.com/product/tmp441 37 38 * Texas Instruments TMP442 39 40 Prefix: 'tmp442' 41 42 Addresses scanned: I2C 0x4c and 0x4d 43 44 Datasheet: https://www.ti.com/product/tmp442 45 46Authors: 47 48 Andre Prendel <andre.prendel@gmx.de> 49 50Description 51----------- 52 53This driver implements support for Texas Instruments TMP421, TMP422, 54TMP423, TMP441, and TMP442 temperature sensor chips. These chips 55implement one local and up to one (TMP421, TMP441), up to two (TMP422, 56TMP442) or up to three (TMP423) remote sensors. Temperature is measured 57in degrees Celsius. The chips are wired over I2C/SMBus and specified 58over a temperature range of -40 to +125 degrees Celsius. Resolution 59for both the local and remote channels is 0.0625 degree C. 60 61The chips support only temperature measurement. The driver exports 62the temperature values via the following sysfs files: 63 64**temp[1-4]_input** 65 66**temp[2-4]_fault** 67 68Each sensor can be individually disabled via Devicetree or from sysfs 69via: 70 71**temp[1-4]_enable** 72 73If labels were specified in Devicetree, additional sysfs files will 74be present: 75 76**temp[1-4]_label** 77