1 Kernel driver w83l785ts 2 ======================= 3 4 Supported chips: 5 6 * Winbond W83L785TS-S 7 8 Prefix: 'w83l785ts' 9 10 Addresses scanned: I2C 0x2e 11 12 Datasheet: Publicly available at the Winbond USA website 13 14 http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L785TS-S.pdf 15 16 Authors: 17 Jean Delvare <jdelvare@suse.de> 18 19 Description 20 ----------- 21 22 The W83L785TS-S is a digital temperature sensor. It senses the 23 temperature of a single external diode. The high limit is 24 theoretically defined as 85 or 100 degrees C through a combination 25 of external resistors, so the user cannot change it. Values seen so 26 far suggest that the two possible limits are actually 95 and 110 27 degrees C. The datasheet is rather poor and obviously inaccurate 28 on several points including this one. 29 30 All temperature values are given in degrees Celsius. Resolution 31 is 1.0 degree. See the datasheet for details. 32 33 The w83l785ts driver will not update its values more frequently than 34 every other second; reading them more often will do no harm, but will 35 return 'old' values. 36 37 Known Issues 38 ------------ 39 40 On some systems (Asus), the BIOS is known to interfere with the driver 41 and cause read errors. Or maybe the W83L785TS-S chip is simply unreliable, 42 we don't really know. The driver will retry a given number of times 43 (5 by default) and then give up, returning the old value (or 0 if 44 there is no old value). It seems to work well enough so that you should 45 not notice anything. Thanks to James Bolt for helping test this feature.
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