1Kernel driver w83l785ts 2======================= 3 4Supported 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 16Authors: 17 Jean Delvare <jdelvare@suse.de> 18 19Description 20----------- 21 22The W83L785TS-S is a digital temperature sensor. It senses the 23temperature of a single external diode. The high limit is 24theoretically defined as 85 or 100 degrees C through a combination 25of external resistors, so the user cannot change it. Values seen so 26far suggest that the two possible limits are actually 95 and 110 27degrees C. The datasheet is rather poor and obviously inaccurate 28on several points including this one. 29 30All temperature values are given in degrees Celsius. Resolution 31is 1.0 degree. See the datasheet for details. 32 33The w83l785ts driver will not update its values more frequently than 34every other second; reading them more often will do no harm, but will 35return 'old' values. 36 37Known Issues 38------------ 39 40On some systems (Asus), the BIOS is known to interfere with the driver 41and cause read errors. Or maybe the W83L785TS-S chip is simply unreliable, 42we 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 44there is no old value). It seems to work well enough so that you should 45not notice anything. Thanks to James Bolt for helping test this feature. 46