| 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 <jdelvare@suse.de> |
| |
| 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. |
