summaryrefslogtreecommitdiff
path: root/Documentation/hwmon/w83l785ts
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /Documentation/hwmon/w83l785ts
Initial import
Diffstat (limited to 'Documentation/hwmon/w83l785ts')
-rw-r--r--Documentation/hwmon/w83l785ts40
1 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/hwmon/w83l785ts b/Documentation/hwmon/w83l785ts
new file mode 100644
index 000000000..c89784788
--- /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 <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.