1 Kernel driver smsc47m1
2 ======================
3
4 Supported chips:
5
6 * SMSC LPC47B27x, LPC47M112, LPC47M10x, LPC4
7
8 LPC47M15x and LPC47M192
9
10 Addresses scanned: none, address read from
11
12 Prefix: 'smsc47m1'
13
14 Datasheets:
15
16 http://www.smsc.com/media/Downloads_Pu
17
18 http://www.smsc.com/media/Downloads_Pu
19
20 http://www.smsc.com/media/Downloads_Pu
21
22 http://www.smsc.com/
23
24 * SMSC LPC47M292
25
26 Addresses scanned: none, address read from
27
28 Prefix: 'smsc47m2'
29
30 Datasheet: Not public
31
32 * SMSC LPC47M997
33
34 Addresses scanned: none, address read from
35
36 Prefix: 'smsc47m1'
37
38 Datasheet: none
39
40
41
42 Authors:
43
44 - Mark D. Studebaker <mdsxyz123@yahoo.com>
45 - With assistance from Bruce Allen <ballen
46 fan.c program:
47
48 - http://www.lsc-group.phys.uwm.edu/%7E
49
50 - Gabriele Gorla <gorlik@yahoo.com>,
51 - Jean Delvare <jdelvare@suse.de>
52
53 Description
54 -----------
55
56 The Standard Microsystems Corporation (SMSC) 4
57 contain monitoring and PWM control circuitry f
58
59 The LPC47M15x, LPC47M192 and LPC47M292 chips c
60 monitoring block' in addition to the fan monit
61 hardware monitoring block is not supported by
62 smsc47m192 driver for that.
63
64 No documentation is available for the 47M997,
65 ID as the 47M15x and 47M192 chips and seems to
66
67 Fan rotation speeds are reported in RPM (rotat
68 triggered if the rotation speed has dropped be
69 readings can be divided by a programmable divi
70 the readings more range or accuracy. Not all R
71 represented, so some rounding is done. With a
72 representable value is around 2600 RPM.
73
74 PWM values are from 0 to 255.
75
76 If an alarm triggers, it will remain triggered
77 is read at least once. This means that the cau
78 already have disappeared! Note that in the cur
79 hardware registers are read whenever any data
80 than 1.5 seconds since the last update). This
81 miss once-only alarms.
82
83 ----------------------------------------------
84
85 The lm_sensors project gratefully acknowledges
86 Intel in the development of this driver.
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