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author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
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committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /Documentation/hwmon/w83l785ts | |
parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'Documentation/hwmon/w83l785ts')
-rw-r--r-- | Documentation/hwmon/w83l785ts | 40 |
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diff --git a/Documentation/hwmon/w83l785ts b/Documentation/hwmon/w83l785ts new file mode 100644 index 00000000..bd1fa9d4 --- /dev/null +++ b/Documentation/hwmon/w83l785ts @@ -0,0 +1,40 @@ +Kernel driver w83l785ts +======================= + +Supported chips: + * Winbond W83L785TS-S + Prefix: 'w83l785ts' + Addresses scanned: I2C 0x2e + Datasheet: Publicly available at the Winbond USA website + http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L785TS-S.pdf + +Authors: + Jean Delvare <khali@linux-fr.org> + +Description +----------- + +The W83L785TS-S is a digital temperature sensor. It senses the +temperature of a single external diode. The high limit is +theoretically defined as 85 or 100 degrees C through a combination +of external resistors, so the user cannot change it. Values seen so +far suggest that the two possible limits are actually 95 and 110 +degrees C. The datasheet is rather poor and obviously inaccurate +on several points including this one. + +All temperature values are given in degrees Celsius. Resolution +is 1.0 degree. See the datasheet for details. + +The w83l785ts driver will not update its values more frequently than +every other second; reading them more often will do no harm, but will +return 'old' values. + +Known Issues +------------ + +On some systems (Asus), the BIOS is known to interfere with the driver +and cause read errors. Or maybe the W83L785TS-S chip is simply unreliable, +we don't really know. The driver will retry a given number of times +(5 by default) and then give up, returning the old value (or 0 if +there is no old value). It seems to work well enough so that you should +not notice anything. Thanks to James Bolt for helping test this feature. |