8 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
10 PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
13 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
15 PMBus Power-Supply Data Logger
18 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34446.pdf
20 Author: Guenter Roeck <guenter.roeck@ericsson.com>
26 This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
27 Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
28 and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
30 The driver is a client driver to the core PMBus driver. Please see
31 Documentation/hwmon/pmbus for details on PMBus client drivers.
37 This driver does not auto-detect devices. You will have to instantiate the
38 devices explicitly. Please see Documentation/i2c/instantiating-devices for
41 For MAX34446, the value of the currX_crit attribute determines if current or
42 voltage measurement is enabled for a given channel. Voltage measurement is
43 enabled if currX_crit is set to 0; current measurement is enabled if the
44 attribute is set to a positive value. Power measurement is only enabled if
45 channel 1 (3) is configured for voltage measurement, and channel 2 (4) is
46 configured for current measurement.
52 The driver supports standard PMBus driver platform data.
58 The following attributes are supported. Limits are read-write; all other
59 attributes are read-only.
61 in[1-6]_label "vout[1-6]".
62 in[1-6]_input Measured voltage. From READ_VOUT register.
63 in[1-6]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
64 in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
65 in[1-6]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
66 in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
67 in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
68 in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
69 in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
70 in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
71 in[1-6]_lowest Historical minimum voltage.
72 in[1-6]_highest Historical maximum voltage.
73 in[1-6]_reset_history Write any value to reset history.
75 MAX34446 only supports in[1-4].
77 curr[1-6]_label "iout[1-6]".
78 curr[1-6]_input Measured current. From READ_IOUT register.
79 curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
80 curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
81 curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
82 curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
83 curr[1-4]_average Historical average current (MAX34446 only).
84 curr[1-6]_highest Historical maximum current.
85 curr[1-6]_reset_history Write any value to reset history.
87 in6 and curr6 attributes only exist for MAX34440.
88 MAX34446 only supports curr[1-4].
90 power[1,3]_label "pout[1,3]"
91 power[1,3]_input Measured power.
92 power[1,3]_average Historical average power.
93 power[1,3]_highest Historical maximum power.
95 Power attributes only exist for MAX34446.
97 temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
98 temp1 is the chip's internal temperature. temp2..temp5
99 are remote I2C temperature sensors. For MAX34441, temp6
100 is a remote thermal-diode sensor. For MAX34440, temp6..8
101 are remote I2C temperature sensors.
102 temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
103 temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
104 temp[1-8]_max_alarm Temperature high alarm.
105 temp[1-8]_crit_alarm Temperature critical high alarm.
106 temp[1-8]_average Historical average temperature (MAX34446 only).
107 temp[1-8]_highest Historical maximum temperature.
108 temp[1-8]_reset_history Write any value to reset history.
110 temp7 and temp8 attributes only exist for MAX34440.
111 MAX34446 only supports temp[1-3].