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gerrit-public.fairphone.software / kernel / msm-4.9 / 9b133f8d87a460e97b63efbf421a87741a029cd0 / . / Documentation / hwmon / max34440
blob: 8ab51536a1eb2b5dca0220bf45b7b6891b4e1213 [file] [log] [blame]
Guenter Roecke428d8d2011-04-18 09:55:59 -0700[diff] [blame]1Kernel driver max34440
2======================
3
4Supported chips:
5 * Maxim MAX34440
6 Prefixes: 'max34440'
7 Addresses scanned: -
8 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
9 * Maxim MAX34441
10 PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
11 Prefixes: 'max34441'
12 Addresses scanned: -
13 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
14
15Author: Guenter Roeck <guenter.roeck@ericsson.com>
16
17
18Description
19-----------
20
21This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
22Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
23and Intelligent Fan Controller.
24
25The driver is a client driver to the core PMBus driver. Please see
26Documentation/hwmon/pmbus for details on PMBus client drivers.
27
28
29Usage Notes
30-----------
31
32This driver does not auto-detect devices. You will have to instantiate the
33devices explicitly. Please see Documentation/i2c/instantiating-devices for
34details.
35
36
37Platform data support
38---------------------
39
40The driver supports standard PMBus driver platform data.
41
42
43Sysfs entries
44-------------
45
46The following attributes are supported. Limits are read-write; all other
47attributes are read-only.
48
49in[1-6]_label "vout[1-6]".
50in[1-6]_input Measured voltage. From READ_VOUT register.
51in[1-6]_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
52in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
53in[1-6]_lcrit Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register.
54in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
55in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
56in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
57in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
58in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
Guenter Roeck98591db2011-07-09 13:17:43 -0700[diff] [blame]59in[1-6]_highest Historical maximum voltage.
60in[1-6]_reset_history Write any value to reset history.
Guenter Roecke428d8d2011-04-18 09:55:59 -0700[diff] [blame]61
62curr[1-6]_label "iout[1-6]".
63curr[1-6]_input Measured current. From READ_IOUT register.
64curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
65curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
66curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
67curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
Guenter Roeck98591db2011-07-09 13:17:43 -0700[diff] [blame]68curr[1-6]_highest Historical maximum current.
69curr[1-6]_reset_history Write any value to reset history.
Guenter Roecke428d8d2011-04-18 09:55:59 -0700[diff] [blame]70
71 in6 and curr6 attributes only exist for MAX34440.
72
73temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
74 temp1 is the chip's internal temperature. temp2..temp5
75 are remote I2C temperature sensors. For MAX34441, temp6
76 is a remote thermal-diode sensor. For MAX34440, temp6..8
77 are remote I2C temperature sensors.
78temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
79temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
80temp[1-8]_max_alarm Temperature high alarm.
81temp[1-8]_crit_alarm Temperature critical high alarm.
Guenter Roeck98591db2011-07-09 13:17:43 -0700[diff] [blame]82temp[1-8]_highest Historical maximum temperature.
83temp[1-8]_reset_history Write any value to reset history.
Guenter Roecke428d8d2011-04-18 09:55:59 -0700[diff] [blame]84
85 temp7 and temp8 attributes only exist for MAX34440.