Commit | Line | Data |
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e428d8d3 GR |
1 | Kernel driver max34440 |
2 | ====================== | |
3 | ||
4 | Supported 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 | ||
15 | Author: Guenter Roeck <guenter.roeck@ericsson.com> | |
16 | ||
17 | ||
18 | Description | |
19 | ----------- | |
20 | ||
21 | This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel | |
22 | Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager | |
23 | and Intelligent Fan Controller. | |
24 | ||
25 | The driver is a client driver to the core PMBus driver. Please see | |
26 | Documentation/hwmon/pmbus for details on PMBus client drivers. | |
27 | ||
28 | ||
29 | Usage Notes | |
30 | ----------- | |
31 | ||
32 | This driver does not auto-detect devices. You will have to instantiate the | |
33 | devices explicitly. Please see Documentation/i2c/instantiating-devices for | |
34 | details. | |
35 | ||
36 | ||
37 | Platform data support | |
38 | --------------------- | |
39 | ||
40 | The driver supports standard PMBus driver platform data. | |
41 | ||
42 | ||
43 | Sysfs entries | |
44 | ------------- | |
45 | ||
46 | The following attributes are supported. Limits are read-write; all other | |
47 | attributes are read-only. | |
48 | ||
49 | in[1-6]_label "vout[1-6]". | |
50 | in[1-6]_input Measured voltage. From READ_VOUT register. | |
51 | in[1-6]_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register. | |
52 | in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. | |
53 | in[1-6]_lcrit Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register. | |
54 | in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register. | |
55 | in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. | |
56 | in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. | |
57 | in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. | |
58 | in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. | |
59 | ||
60 | curr[1-6]_label "iout[1-6]". | |
61 | curr[1-6]_input Measured current. From READ_IOUT register. | |
62 | curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
63 | curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. | |
64 | curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status. | |
65 | curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. | |
66 | ||
67 | in6 and curr6 attributes only exist for MAX34440. | |
68 | ||
69 | temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register. | |
70 | temp1 is the chip's internal temperature. temp2..temp5 | |
71 | are remote I2C temperature sensors. For MAX34441, temp6 | |
72 | is a remote thermal-diode sensor. For MAX34440, temp6..8 | |
73 | are remote I2C temperature sensors. | |
74 | temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register. | |
75 | temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register. | |
76 | temp[1-8]_max_alarm Temperature high alarm. | |
77 | temp[1-8]_crit_alarm Temperature critical high alarm. | |
78 | ||
79 | temp7 and temp8 attributes only exist for MAX34440. |