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Guenter Roeckf5bae262011-02-02 08:49:54 -08001Kernel 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
Guenter Roeckd91aae12011-08-29 22:53:20 -070065WARNING: Do not access chip registers using the i2cdump command, and do not use
66any of the i2ctools commands on a command register (0xa5 to 0xac). The chips
67supported by this driver interpret any access to a command register (including
68read commands) as request to execute the command in question. This may result in
69power loss, board resets, and/or Flash corruption. Worst case, your board may
70turn into a brick.
71
Guenter Roeckf5bae262011-02-02 08:49:54 -080072
73Sysfs entries
74-------------
75
76in[0-11]_input Input voltage measurements.
77
78in12_input Voltage on CSP (Current Sense Positive) pin.
79 Only if the chip supports current sensing and if
80 current sensing is enabled.
81
82in[0-11]_min Low warning limit.
83 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
84 only.
85
86in[0-11]_max High warning limit.
87 Supported on MAX16065, MAX16066, MAX16070, and MAX16071
88 only.
89
90 Either low or high warning limits are supported
91 (depending on chip configuration), but not both.
92
93in[0-11]_lcrit Low critical limit.
94
95in[0-11]_crit High critical limit.
96
97in[0-11]_alarm Input voltage alarm.
98
99curr1_input Current sense input; only if the chip supports current
100 sensing and if current sensing is enabled.
101 Displayed current assumes 0.001 Ohm current sense
102 resistor.
103
104curr1_alarm Overcurrent alarm; only if the chip supports current
105 sensing and if current sensing is enabled.