1 Kernel driver max34440
2 ======================
3
4 Supported chips:
5
6 * Maxim MAX34440
7
8 Prefixes: 'max34440'
9
10 Addresses scanned: -
11
12 Datasheet: https://datasheets.maximintegra
13
14 * Maxim MAX34441
15
16 PMBus 5-Channel Power-Supply Manager and I
17
18 Prefixes: 'max34441'
19
20 Addresses scanned: -
21
22 Datasheet: https://datasheets.maximintegra
23
24 * Maxim MAX34446
25
26 PMBus Power-Supply Data Logger
27
28 Prefixes: 'max34446'
29
30 Addresses scanned: -
31
32 Datasheet: https://datasheets.maximintegra
33
34 * Maxim MAX34451
35
36 PMBus 16-Channel V/I Monitor and 12-Channe
37
38 Prefixes: 'max34451'
39
40 Addresses scanned: -
41
42 Datasheet: https://datasheets.maximintegra
43
44 * Maxim MAX34460
45
46 PMBus 12-Channel Voltage Monitor & Sequenc
47
48 Prefix: 'max34460'
49
50 Addresses scanned: -
51
52 Datasheet: https://datasheets.maximintegra
53
54 * Maxim MAX34461
55
56 PMBus 16-Channel Voltage Monitor & Sequenc
57
58 Prefix: 'max34461'
59
60 Addresses scanned: -
61
62 Datasheet: https://datasheets.maximintegra
63
64 Author: Guenter Roeck <linux@roeck-us.net>
65
66
67 Description
68 -----------
69
70 This driver supports hardware monitoring for M
71 Power-Supply Manager, MAX34441 PMBus 5-Channel
72 and Intelligent Fan Controller, and MAX34446 P
73 It also supports the MAX34451, MAX34460, and M
74 Sequencers. The MAX34451 supports monitoring v
75 based on GIN pins. The MAX34460 supports 12 vo
76 supports 16 voltage channels.
77
78 The driver is a client driver to the core PMBu
79 Documentation/hwmon/pmbus.rst for details on P
80
81
82 Usage Notes
83 -----------
84
85 This driver does not auto-detect devices. You
86 devices explicitly. Please see Documentation/i
87 details.
88
89 For MAX34446, the value of the currX_crit attr
90 voltage measurement is enabled for a given cha
91 enabled if currX_crit is set to 0; current mea
92 attribute is set to a positive value. Power me
93 channel 1 (3) is configured for voltage measur
94 configured for current measurement.
95
96
97 Platform data support
98 ---------------------
99
100 The driver supports standard PMBus driver plat
101
102
103 Sysfs entries
104 -------------
105
106 The following attributes are supported. Limits
107 attributes are read-only.
108
109 In
110 ~~
111
112 ======================= ======================
113 in[1-6]_label "vout[1-6]".
114 in[1-6]_input Measured voltage. From
115 in[1-6]_min Minimum Voltage. From
116 in[1-6]_max Maximum voltage. From
117 in[1-6]_lcrit Critical minimum Volta
118 in[1-6]_crit Critical maximum volta
119 register.
120 in[1-6]_min_alarm Voltage low alarm. Fro
121 in[1-6]_max_alarm Voltage high alarm. Fr
122 in[1-6]_lcrit_alarm Voltage critical low a
123 status.
124 in[1-6]_crit_alarm Voltage critical high
125 status.
126 in[1-6]_lowest Historical minimum vol
127 in[1-6]_highest Historical maximum vol
128 in[1-6]_reset_history Write any value to res
129 ======================= ======================
130
131 .. note:: MAX34446 only supports in[1-4].
132
133 Curr
134 ~~~~
135
136 ======================= ======================
137 curr[1-6]_label "iout[1-6]".
138 curr[1-6]_input Measured current. From
139 curr[1-6]_max Maximum current. From
140 curr[1-6]_crit Critical maximum curre
141 register.
142 curr[1-6]_max_alarm Current high alarm. Fr
143 curr[1-6]_crit_alarm Current critical high
144 curr[1-4]_average Historical average cur
145 curr[1-6]_highest Historical maximum cur
146 curr[1-6]_reset_history Write any value to res
147 ======================= ======================
148
149 .. note::
150
151 - in6 and curr6 attributes only exist for
152 - MAX34446 only supports curr[1-4].
153
154 Power
155 ~~~~~
156
157 ======================= ======================
158 power[1,3]_label "pout[1,3]"
159 power[1,3]_input Measured power.
160 power[1,3]_average Historical average pow
161 power[1,3]_highest Historical maximum pow
162 ======================= ======================
163
164 .. note:: Power attributes only exist for MAX3
165
166 Temp
167 ~~~~
168
169 ======================= ======================
170 temp[1-8]_input Measured temperatures.
171 temp1 is the chip's in
172 are remote I2C tempera
173 is a remote thermal-di
174 are remote I2C tempera
175 temp[1-8]_max Maximum temperature. F
176 temp[1-8]_crit Critical high temperat
177 temp[1-8]_max_alarm Temperature high alarm
178 temp[1-8]_crit_alarm Temperature critical h
179 temp[1-8]_average Historical average tem
180 temp[1-8]_highest Historical maximum tem
181 temp[1-8]_reset_history Write any value to res
182 ======================= ======================
183
184
185 .. note::
186 - temp7 and temp8 attributes only exist for
187 - MAX34446 only supports temp[1-3].
188
189
190 .. note::
191
192 - MAX34451 supports attribute groups in[1-1
193 input pins) and temp[1-5].
194 - MAX34460 supports attribute groups in[1-1
195 - MAX34461 supports attribute groups in[1-1
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