diff options
Diffstat (limited to 'Documentation/hwmon/w83l785ts')
-rw-r--r-- | Documentation/hwmon/w83l785ts | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/hwmon/w83l785ts b/Documentation/hwmon/w83l785ts new file mode 100644 index 000000000000..1841cedc25b2 --- /dev/null +++ b/Documentation/hwmon/w83l785ts | |||
@@ -0,0 +1,39 @@ | |||
1 | Kernel driver w83l785ts | ||
2 | ======================= | ||
3 | |||
4 | Supported chips: | ||
5 | * Winbond W83L785TS-S | ||
6 | Prefix: 'w83l785ts' | ||
7 | Addresses scanned: I2C 0x2e | ||
8 | Datasheet: Publicly available at the Winbond USA website | ||
9 | http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L785TS-S.pdf | ||
10 | |||
11 | Authors: | ||
12 | Jean Delvare <khali@linux-fr.org> | ||
13 | |||
14 | Description | ||
15 | ----------- | ||
16 | |||
17 | The W83L785TS-S is a digital temperature sensor. It senses the | ||
18 | temperature of a single external diode. The high limit is | ||
19 | theoretically defined as 85 or 100 degrees C through a combination | ||
20 | of external resistors, so the user cannot change it. Values seen so | ||
21 | far suggest that the two possible limits are actually 95 and 110 | ||
22 | degrees C. The datasheet is rather poor and obviously inaccurate | ||
23 | on several points including this one. | ||
24 | |||
25 | All temperature values are given in degrees Celsius. Resolution | ||
26 | is 1.0 degree. See the datasheet for details. | ||
27 | |||
28 | The w83l785ts driver will not update its values more frequently than | ||
29 | every other second; reading them more often will do no harm, but will | ||
30 | return 'old' values. | ||
31 | |||
32 | Known Issues | ||
33 | ------------ | ||
34 | |||
35 | On some systems (Asus), the BIOS is known to interfere with the driver | ||
36 | and cause read errors. The driver will retry a given number of times | ||
37 | (5 by default) and then give up, returning the old value (or 0 if | ||
38 | there is no old value). It seems to work well enough so that you should | ||
39 | not notice anything. Thanks to James Bolt for helping test this feature. | ||