1 Kernel driver adt7462
2 =====================
3
4 Supported chips:
5
6 * Analog Devices ADT7462
7
8 Prefix: 'adt7462'
9
10 Addresses scanned: I2C 0x58, 0x5C
11
12 Datasheet: Publicly available at the Analo
13
14 Author: Darrick J. Wong
15
16 Description
17 -----------
18
19 This driver implements support for the Analog
20
21 This chip is a bit of a beast. It has 8 count
22 can also measure 13 voltages or 4 temperatures
23 two. See the chip documentation for more deta
24 configurations. This driver does not allow on
25 left to the system designer.
26
27 A sophisticated control system for the PWM out
28 that allows fan speed to be adjusted automatic
29 temperature sensors. Each PWM output is indivi
30 programmable. Once configured, the ADT7462 wil
31 response to the measured temperatures without
32 feature can also be disabled for manual contro
33
34 Each of the measured inputs (voltage, temperat
35 corresponding high/low limit values. The ADT74
36 any measured value exceeds either limit.
37
38 The ADT7462 samples all inputs continuously. T
39 the registers more often than once every other
40 configuration data is only read once per minut
41
42 Special Features
43 ----------------
44
45 The ADT7462 have a 10-bit ADC and can therefor
46 with 0.25 degC resolution.
47
48 The Analog Devices datasheet is very detailed
49 determining an optimal configuration for the a
50
51 The driver will report sensor labels when it i
52 information from the configuration registers.
53
54 Configuration Notes
55 -------------------
56
57 Besides standard interfaces driver adds the fo
58
59 * PWM Control
60
61 * pwm#_auto_point1_pwm and temp#_auto_point1_t
62 * pwm#_auto_point2_pwm and temp#_auto_point2_t
63
64 - point1: Set the pwm speed at a lower tempe
65 - point2: Set the pwm speed at a higher temp
66
67 The ADT7462 will scale the pwm between the low
68 the temperature is between the two temperature
69 from 0 (off) to 255 (full speed). Fan speed w
70 temperature sensor associated with the PWM con
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.