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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:03 EST.

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	  * Maxim MAX34446
15	    PMBus Power-Supply Data Logger
16	    Prefixes: 'max34446'
17	    Addresses scanned: -
18	    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34446.pdf
19	  * Maxim MAX34460
20	    PMBus 12-Channel Voltage Monitor & Sequencer
21	    Prefix: 'max34460'
22	    Addresses scanned: -
23	    Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34460.pdf
24	  * Maxim MAX34461
25	    PMBus 16-Channel Voltage Monitor & Sequencer
26	    Prefix: 'max34461'
27	    Addresses scanned: -
28	    Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34461.pdf
29	
30	Author: Guenter Roeck <linux@roeck-us.net>
31	
32	
33	Description
34	-----------
35	
36	This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
37	Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
38	and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
39	It also supports the MAX34460 and MAX34461 PMBus Voltage Monitor & Sequencers.
40	The MAX34460 supports 12 voltage channels, and the MAX34461 supports 16 voltage
41	channels.
42	
43	The driver is a client driver to the core PMBus driver. Please see
44	Documentation/hwmon/pmbus for details on PMBus client drivers.
45	
46	
47	Usage Notes
48	-----------
49	
50	This driver does not auto-detect devices. You will have to instantiate the
51	devices explicitly. Please see Documentation/i2c/instantiating-devices for
52	details.
53	
54	For MAX34446, the value of the currX_crit attribute determines if current or
55	voltage measurement is enabled for a given channel. Voltage measurement is
56	enabled if currX_crit is set to 0; current measurement is enabled if the
57	attribute is set to a positive value. Power measurement is only enabled if
58	channel 1 (3) is configured for voltage measurement, and channel 2 (4) is
59	configured for current measurement.
60	
61	
62	Platform data support
63	---------------------
64	
65	The driver supports standard PMBus driver platform data.
66	
67	
68	Sysfs entries
69	-------------
70	
71	The following attributes are supported. Limits are read-write; all other
72	attributes are read-only.
73	
74	in[1-6]_label		"vout[1-6]".
75	in[1-6]_input		Measured voltage. From READ_VOUT register.
76	in[1-6]_min		Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
77	in[1-6]_max		Maximum voltage. From VOUT_OV_WARN_LIMIT register.
78	in[1-6]_lcrit		Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
79	in[1-6]_crit		Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
80	in[1-6]_min_alarm	Voltage low alarm. From VOLTAGE_UV_WARNING status.
81	in[1-6]_max_alarm	Voltage high alarm. From VOLTAGE_OV_WARNING status.
82	in[1-6]_lcrit_alarm	Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
83	in[1-6]_crit_alarm	Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
84	in[1-6]_lowest		Historical minimum voltage.
85	in[1-6]_highest		Historical maximum voltage.
86	in[1-6]_reset_history	Write any value to reset history.
87	
88				MAX34446 only supports in[1-4].
89	
90	curr[1-6]_label		"iout[1-6]".
91	curr[1-6]_input		Measured current. From READ_IOUT register.
92	curr[1-6]_max		Maximum current. From IOUT_OC_WARN_LIMIT register.
93	curr[1-6]_crit		Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
94	curr[1-6]_max_alarm	Current high alarm. From IOUT_OC_WARNING status.
95	curr[1-6]_crit_alarm	Current critical high alarm. From IOUT_OC_FAULT status.
96	curr[1-4]_average	Historical average current (MAX34446 only).
97	curr[1-6]_highest	Historical maximum current.
98	curr[1-6]_reset_history	Write any value to reset history.
99	
100				in6 and curr6 attributes only exist for MAX34440.
101				MAX34446 only supports curr[1-4].
102	
103	power[1,3]_label	"pout[1,3]"
104	power[1,3]_input	Measured power.
105	power[1,3]_average	Historical average power.
106	power[1,3]_highest	Historical maximum power.
107	
108				Power attributes only exist for MAX34446.
109	
110	temp[1-8]_input		Measured temperatures. From READ_TEMPERATURE_1 register.
111				temp1 is the chip's internal temperature. temp2..temp5
112				are remote I2C temperature sensors. For MAX34441, temp6
113				is a remote thermal-diode sensor. For MAX34440, temp6..8
114				are remote I2C temperature sensors.
115	temp[1-8]_max		Maximum temperature. From OT_WARN_LIMIT register.
116	temp[1-8]_crit		Critical high temperature. From OT_FAULT_LIMIT register.
117	temp[1-8]_max_alarm	Temperature high alarm.
118	temp[1-8]_crit_alarm	Temperature critical high alarm.
119	temp[1-8]_average	Historical average temperature (MAX34446 only).
120	temp[1-8]_highest	Historical maximum temperature.
121	temp[1-8]_reset_history	Write any value to reset history.
122	
123				temp7 and temp8 attributes only exist for MAX34440.
124				MAX34446 only supports temp[1-3].
125	
126	MAX34460 supports attribute groups in[1-12] and temp[1-5].
127	MAX34461 supports attribute groups in[1-16] and temp[1-5].
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