xref: /linux/Documentation/hwmon/lm25066.rst (revision ebf68996de0ab250c5d520eb2291ab65643e9a1e) 
1Kernel driver lm25066
2=====================
3
4Supported chips:
5
6  * TI LM25056
7
8    Prefix: 'lm25056'
9
10    Addresses scanned: -
11
12    Datasheets:
13
14	http://www.ti.com/lit/gpn/lm25056
15
16	http://www.ti.com/lit/gpn/lm25056a
17
18  * National Semiconductor LM25066
19
20    Prefix: 'lm25066'
21
22    Addresses scanned: -
23
24    Datasheets:
25
26	http://www.national.com/pf/LM/LM25066.html
27
28	http://www.national.com/pf/LM/LM25066A.html
29
30  * National Semiconductor LM5064
31
32    Prefix: 'lm5064'
33
34    Addresses scanned: -
35
36    Datasheet:
37
38	http://www.national.com/pf/LM/LM5064.html
39
40  * National Semiconductor LM5066
41
42    Prefix: 'lm5066'
43
44    Addresses scanned: -
45
46    Datasheet:
47
48	http://www.national.com/pf/LM/LM5066.html
49
50  * Texas Instruments LM5066I
51
52    Prefix: 'lm5066i'
53
54    Addresses scanned: -
55
56	Datasheet:
57
58    http://www.ti.com/product/LM5066I
59
60
61Author: Guenter Roeck <linux@roeck-us.net>
62
63
64Description
65-----------
66
67This driver supports hardware monitoring for National Semiconductor / TI LM25056,
68LM25066, LM5064, and LM5066/LM5066I Power Management, Monitoring,
69Control, and Protection ICs.
70
71The driver is a client driver to the core PMBus driver. Please see
72Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
73
74
75Usage Notes
76-----------
77
78This driver does not auto-detect devices. You will have to instantiate the
79devices explicitly. Please see Documentation/i2c/instantiating-devices for
80details.
81
82
83Platform data support
84---------------------
85
86The driver supports standard PMBus driver platform data.
87
88
89Sysfs entries
90-------------
91
92The following attributes are supported. Limits are read-write; all other
93attributes are read-only.
94
95======================= =======================================================
96in1_label		"vin"
97in1_input		Measured input voltage.
98in1_average		Average measured input voltage.
99in1_min			Minimum input voltage.
100in1_max			Maximum input voltage.
101in1_min_alarm		Input voltage low alarm.
102in1_max_alarm		Input voltage high alarm.
103
104in2_label		"vmon"
105in2_input		Measured voltage on VAUX pin
106in2_min			Minimum VAUX voltage (LM25056 only).
107in2_max			Maximum VAUX voltage (LM25056 only).
108in2_min_alarm		VAUX voltage low alarm (LM25056 only).
109in2_max_alarm		VAUX voltage high alarm (LM25056 only).
110
111in3_label		"vout1"
112			Not supported on LM25056.
113in3_input		Measured output voltage.
114in3_average		Average measured output voltage.
115in3_min			Minimum output voltage.
116in3_min_alarm		Output voltage low alarm.
117
118curr1_label		"iin"
119curr1_input		Measured input current.
120curr1_average		Average measured input current.
121curr1_max		Maximum input current.
122curr1_max_alarm		Input current high alarm.
123
124power1_label		"pin"
125power1_input		Measured input power.
126power1_average		Average measured input power.
127power1_max		Maximum input power limit.
128power1_alarm		Input power alarm
129power1_input_highest	Historical maximum power.
130power1_reset_history	Write any value to reset maximum power history.
131
132temp1_input		Measured temperature.
133temp1_max		Maximum temperature.
134temp1_crit		Critical high temperature.
135temp1_max_alarm		Chip temperature high alarm.
136temp1_crit_alarm	Chip temperature critical high alarm.
137======================= =======================================================
138