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Diffstat (limited to 'kernel/Documentation/hwmon/tmp421')
| -rw-r--r-- | kernel/Documentation/hwmon/tmp421 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/Documentation/hwmon/tmp421 b/kernel/Documentation/hwmon/tmp421 new file mode 100644 index 000000000..9e6fe5549 --- /dev/null +++ b/kernel/Documentation/hwmon/tmp421 @@ -0,0 +1,44 @@ +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: http://www.ti.com/product/tmp441 + * Texas Instruments TMP442 + Prefix: 'tmp442' + Addresses scanned: I2C 0x4c and 0x4d + Datasheet: http://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 |