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authorGuenter Roeck <guenter.roeck@ericsson.com>2011-02-02 11:49:54 -0500
committerGuenter Roeck <guenter.roeck@ericsson.com>2011-05-19 11:19:36 -0400
commitf5bae2642e3df716d2bb7bcffdf51e7a286e885e (patch)
tree0490217307f30f8d0d92dc4f004982dfaa8fbc5b /Documentation/hwmon
parent82c7465b4dd013d19858bfeac084849ae17682c0 (diff)
hwmon: Driver for MAX16065 System Manager and compatibles
This patch adds hardware monitoring support for Maxim MAX16065, MAX16066, MAX16067, MAX16068, MAX16070, and MAX16071 flash-configurable system managers with nonvolatile fault registers. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Jean Delvare <khali@linux-fr.org>
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1Kernel driver max16065
2======================
3
4Supported chips:
5 * Maxim MAX16065, MAX16066
6 Prefixes: 'max16065', 'max16066'
7 Addresses scanned: -
8 Datasheet:
9 http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
10 * Maxim MAX16067
11 Prefix: 'max16067'
12 Addresses scanned: -
13 Datasheet:
14 http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
15 * Maxim MAX16068
16 Prefix: 'max16068'
17 Addresses scanned: -
18 Datasheet:
19 http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
20 * Maxim MAX16070/MAX16071
21 Prefixes: 'max16070', 'max16071'
22 Addresses scanned: -
23 Datasheet:
24 http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
25
26
27Author: Guenter Roeck <guenter.roeck@ericsson.com>
28
29
30Description
31-----------
32
33[From datasheets] The MAX16065/MAX16066 flash-configurable system managers
34monitor and sequence multiple system voltages. The MAX16065/MAX16066 can also
35accurately monitor (+/-2.5%) one current channel using a dedicated high-side
36current-sense amplifier. The MAX16065 manages up to twelve system voltages
37simultaneously, and the MAX16066 manages up to eight supply voltages.
38
39The MAX16067 flash-configurable system manager monitors and sequences multiple
40system voltages. The MAX16067 manages up to six system voltages simultaneously.
41
42The MAX16068 flash-configurable system manager monitors and manages up to six
43system voltages simultaneously.
44
45The MAX16070/MAX16071 flash-configurable system monitors supervise multiple
46system voltages. The MAX16070/MAX16071 can also accurately monitor (+/-2.5%)
47one current channel using a dedicated high-side current-sense amplifier. The
48MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071
49monitors up to eight supply voltages.
50
51Each monitored channel has its own low and high critical limits. MAX16065,
52MAX16066, MAX16070, and MAX16071 support an additional limit which is
53configurable as either low or high secondary limit. MAX16065, MAX16066,
54MAX16070, and MAX16071 also support supply current monitoring.
55
56
57Usage Notes
58-----------
59
60This driver does not probe for devices, since there is no register which
61can be safely used to identify the chip. You will have to instantiate
62the devices explicitly. Please see Documentation/i2c/instantiating-devices for
63details.
64
65
66Sysfs entries
67-------------
68
69in[0-11]_input Input voltage measurements.
70
71in12_input Voltage on CSP (Current Sense Positive) pin.
72 Only if the chip supports current sensing and if
73 current sensing is enabled.
74
75in[0-11]_min Low warning limit.
76 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
77 only.
78
79in[0-11]_max High warning limit.
80 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
81 only.
82
83 Either low or high warning limits are supported
84 (depending on chip configuration), but not both.
85
86in[0-11]_lcrit Low critical limit.
87
88in[0-11]_crit High critical limit.
89
90in[0-11]_alarm Input voltage alarm.
91
92curr1_input Current sense input; only if the chip supports current
93 sensing and if current sensing is enabled.
94 Displayed current assumes 0.001 Ohm current sense
95 resistor.
96
97curr1_alarm Overcurrent alarm; only if the chip supports current
98 sensing and if current sensing is enabled.