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