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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:33:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:33:09 -0800
commitdff6d1c5ef9116a4478908001d72ee67127ecf01 (patch)
tree43c6e7ff8e8059f8fd733efd45b51f84b510d305 /Documentation/hwmon/lm90
parent66ce3cf84deba6cc71dcf43c9d56a4278e5f712d (diff)
parenta0a5e3488a51c46f383c5faa86b53828e30ce153 (diff)
downloadop-kernel-dev-dff6d1c5ef9116a4478908001d72ee67127ecf01.zip
op-kernel-dev-dff6d1c5ef9116a4478908001d72ee67127ecf01.tar.gz
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: (23 commits) hwmon: Remove the deprecated adt7473 driver hwmon: Fix off-by-one kind values hwmon: (tmp421) Fix temperature conversions hwmon: (tmp421) Restore missing inputs hwmon: Driver for Andigilog aSC7621 family monitoring chips hwmon: (adt7411) Improve locking hwmon: Add driver for ADT7411 voltage and temperature sensor hwmon: (w83793) Add watchdog functionality hwmon: (g760a) Make rpm_from_cnt static hwmon: (it87) Validate auto pwm settings hwmon: (it87) Add support for old automatic fan speed control hwmon: (it87) Drop dead web links in documentation hwmon: (it87) Add an entry in MAINTAINERS hwmon: (it87) Use strict_strtol instead of simple_strtol hwmon: (it87) Fix many checkpatch errors and warnings hwmon: (it87) Add support for beep on alarm hwmon: (it87) Create vid attributes by group hwmon: (it87) Refactor attributes creation and removal hwmon: (it87) Expose the PWM/temperature mappings hwmon: (it87) Display fan outputs in automatic mode as such ...
Diffstat (limited to 'Documentation/hwmon/lm90')
-rw-r--r--Documentation/hwmon/lm9022
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/hwmon/lm90 b/Documentation/hwmon/lm90
index 93d8e3d..6a03dd4 100644
--- a/Documentation/hwmon/lm90
+++ b/Documentation/hwmon/lm90
@@ -84,6 +84,10 @@ Supported chips:
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3500
+ * Winbond/Nuvoton W83L771AWG/ASG
+ Prefix: 'w83l771'
+ Addresses scanned: I2C 0x4c
+ Datasheet: Not publicly available, can be requested from Nuvoton
Author: Jean Delvare <khali@linux-fr.org>
@@ -147,6 +151,12 @@ MAX6680 and MAX6681:
* Selectable address
* Remote sensor type selection
+W83L771AWG/ASG
+ * The AWG and ASG variants only differ in package format.
+ * Filter and alert configuration register at 0xBF
+ * Diode ideality factor configuration (remote sensor) at 0xE3
+ * Moving average (depending on conversion rate)
+
All temperature values are given in degrees Celsius. Resolution
is 1.0 degree for the local temperature, 0.125 degree for the remote
temperature, except for the MAX6657, MAX6658 and MAX6659 which have a
@@ -163,6 +173,18 @@ The lm90 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.
+SMBus Alert Support
+-------------------
+
+This driver has basic support for SMBus alert. When an alert is received,
+the status register is read and the faulty temperature channel is logged.
+
+The Analog Devices chips (ADM1032 and ADT7461) do not implement the SMBus
+alert protocol properly so additional care is needed: the ALERT output is
+disabled when an alert is received, and is re-enabled only when the alarm
+is gone. Otherwise the chip would block alerts from other chips in the bus
+as long as the alarm is active.
+
PEC Support
-----------
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