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-rw-r--r--Documentation/hwmon/adt747318
1 files changed, 5 insertions, 13 deletions
diff --git a/Documentation/hwmon/adt7473 b/Documentation/hwmon/adt7473
index 2126de34c711..1cbf671822e2 100644
--- a/Documentation/hwmon/adt7473
+++ b/Documentation/hwmon/adt7473
@@ -14,14 +14,14 @@ Description
14 14
15This driver implements support for the Analog Devices ADT7473 chip family. 15This driver implements support for the Analog Devices ADT7473 chip family.
16 16
17The LM85 uses the 2-wire interface compatible with the SMBUS 2.0 17The ADT7473 uses the 2-wire interface compatible with the SMBUS 2.0
18specification. Using an analog to digital converter it measures three (3) 18specification. Using an analog to digital converter it measures three (3)
19temperatures and two (2) voltages. It has three (3) 16-bit counters for 19temperatures and two (2) voltages. It has four (4) 16-bit counters for
20measuring fan speed. There are three (3) PWM outputs that can be used 20measuring fan speed. There are three (3) PWM outputs that can be used
21to control fan speed. 21to control fan speed.
22 22
23A sophisticated control system for the PWM outputs is designed into the 23A sophisticated control system for the PWM outputs is designed into the
24LM85 that allows fan speed to be adjusted automatically based on any of the 24ADT7473 that allows fan speed to be adjusted automatically based on any of the
25three temperature sensors. Each PWM output is individually adjustable and 25three temperature sensors. Each PWM output is individually adjustable and
26programmable. Once configured, the ADT7473 will adjust the PWM outputs in 26programmable. Once configured, the ADT7473 will adjust the PWM outputs in
27response to the measured temperatures without further host intervention. 27response to the measured temperatures without further host intervention.
@@ -46,14 +46,6 @@ from the raw value to get the temperature value.
46The Analog Devices datasheet is very detailed and describes a procedure for 46The Analog Devices datasheet is very detailed and describes a procedure for
47determining an optimal configuration for the automatic PWM control. 47determining an optimal configuration for the automatic PWM control.
48 48
49Hardware Configurations
50-----------------------
51
52The ADT7473 chips have an optional SMBALERT output that can be used to
53signal the chipset in case a limit is exceeded or the temperature sensors
54fail. Individual sensor interrupts can be masked so they won't trigger
55SMBALERT. The SMBALERT output if configured replaces the PWM2 function.
56
57Configuration Notes 49Configuration Notes
58------------------- 50-------------------
59 51
@@ -61,8 +53,8 @@ Besides standard interfaces driver adds the following:
61 53
62* PWM Control 54* PWM Control
63 55
64* pwm#_auto_point1_pwm and pwm#_auto_point1_temp and 56* pwm#_auto_point1_pwm and temp#_auto_point1_temp and
65* pwm#_auto_point2_pwm and pwm#_auto_point2_temp - 57* pwm#_auto_point2_pwm and temp#_auto_point2_temp -
66 58
67point1: Set the pwm speed at a lower temperature bound. 59point1: Set the pwm speed at a lower temperature bound.
68point2: Set the pwm speed at a higher temperature bound. 60point2: Set the pwm speed at a higher temperature bound.