1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 Kernel driver mp2891 3 Kernel driver mp2891
4 ==================== 4 ====================
5 5
6 Supported chips: 6 Supported chips:
7 7
8 * MPS mp2891 8 * MPS mp2891
9 9
10 Prefix: 'mp2891' 10 Prefix: 'mp2891'
11 11
12 * Datasheet 12 * Datasheet
13 13
14 Publicly available at the MPS website : ht 14 Publicly available at the MPS website : https://www.monolithicpower.com/en/mp2891.html
15 15
16 Author: 16 Author:
17 17
18 Noah Wang <noahwang.wang@outlook.com> 18 Noah Wang <noahwang.wang@outlook.com>
19 19
20 Description 20 Description
21 ----------- 21 -----------
22 22
23 This driver implements support for Monolithic 23 This driver implements support for Monolithic Power Systems, Inc. (MPS)
24 MP2891 Multi-phase Digital VR Controller. 24 MP2891 Multi-phase Digital VR Controller.
25 25
26 Device compliant with: 26 Device compliant with:
27 27
28 - PMBus rev 1.3 interface. 28 - PMBus rev 1.3 interface.
29 29
30 Device supports direct and linear format for r 30 Device supports direct and linear format for reading input voltage,
31 output voltage, input current, output current, 31 output voltage, input current, output current, input power, output
32 power, and temperature. 32 power, and temperature.
33 33
34 The driver exports the following attributes vi 34 The driver exports the following attributes via the 'sysfs' files
35 for input voltage: 35 for input voltage:
36 36
37 **in1_input** 37 **in1_input**
38 38
39 **in1_label** 39 **in1_label**
40 40
41 **in1_crit** 41 **in1_crit**
42 42
43 **in1_crit_alarm** 43 **in1_crit_alarm**
44 44
45 **in1_lcrit** 45 **in1_lcrit**
46 46
47 **in1_lcrit_alarm** 47 **in1_lcrit_alarm**
48 48
49 **in1_min** 49 **in1_min**
50 50
51 **in1_min_alarm** 51 **in1_min_alarm**
52 52
53 The driver provides the following attributes f 53 The driver provides the following attributes for output voltage:
54 54
55 **in2_input** 55 **in2_input**
56 56
57 **in2_label** 57 **in2_label**
58 58
59 **in2_crit** 59 **in2_crit**
60 60
61 **in2_crit_alarm** 61 **in2_crit_alarm**
62 62
63 **in2_lcrit** 63 **in2_lcrit**
64 64
65 **in2_lcrit_alarm** 65 **in2_lcrit_alarm**
66 66
67 **in2_min** 67 **in2_min**
68 68
69 **in2_min_alarm** 69 **in2_min_alarm**
70 70
71 **in3_input** 71 **in3_input**
72 72
73 **in3_label** 73 **in3_label**
74 74
75 **in3_crit** 75 **in3_crit**
76 76
77 **in3_crit_alarm** 77 **in3_crit_alarm**
78 78
79 **in3_lcrit** 79 **in3_lcrit**
80 80
81 **in3_lcrit_alarm** 81 **in3_lcrit_alarm**
82 82
83 **in3_min** 83 **in3_min**
84 84
85 **in3_min_alarm** 85 **in3_min_alarm**
86 86
87 The driver provides the following attributes f 87 The driver provides the following attributes for input current:
88 88
89 **curr1_input** 89 **curr1_input**
90 90
91 **curr1_label** 91 **curr1_label**
92 92
93 **curr1_max** 93 **curr1_max**
94 94
95 **curr1_max_alarm** 95 **curr1_max_alarm**
96 96
97 **curr2_input** 97 **curr2_input**
98 98
99 **curr2_label** 99 **curr2_label**
100 100
101 **curr2_max** 101 **curr2_max**
102 102
103 **curr2_max_alarm** 103 **curr2_max_alarm**
104 104
105 The driver provides the following attributes f 105 The driver provides the following attributes for output current:
106 106
107 **curr3_input** 107 **curr3_input**
108 108
109 **curr3_label** 109 **curr3_label**
110 110
111 **curr3_crit** 111 **curr3_crit**
112 112
113 **curr3_crit_alarm** 113 **curr3_crit_alarm**
114 114
115 **curr3_max** 115 **curr3_max**
116 116
117 **curr3_max_alarm** 117 **curr3_max_alarm**
118 118
119 **curr4_input** 119 **curr4_input**
120 120
121 **curr4_label** 121 **curr4_label**
122 122
123 **curr4_crit** 123 **curr4_crit**
124 124
125 **curr4_crit_alarm** 125 **curr4_crit_alarm**
126 126
127 **curr4_max** 127 **curr4_max**
128 128
129 **curr4_max_alarm** 129 **curr4_max_alarm**
130 130
131 The driver provides the following attributes f 131 The driver provides the following attributes for input power:
132 132
133 **power1_input** 133 **power1_input**
134 134
135 **power1_label** 135 **power1_label**
136 136
137 **power1_max** 137 **power1_max**
138 138
139 **power1_alarm** 139 **power1_alarm**
140 140
141 **power2_input** 141 **power2_input**
142 142
143 **power2_label** 143 **power2_label**
144 144
145 **power2_max** 145 **power2_max**
146 146
147 **power2_alarm** 147 **power2_alarm**
148 148
149 The driver provides the following attributes f 149 The driver provides the following attributes for output power:
150 150
151 **power3_input** 151 **power3_input**
152 152
153 **power3_label** 153 **power3_label**
154 154
155 **power4_input** 155 **power4_input**
156 156
157 **power4_label** 157 **power4_label**
158 158
159 The driver provides the following attributes f 159 The driver provides the following attributes for temperature:
160 160
161 **temp1_input** 161 **temp1_input**
162 162
163 **temp1_crit** 163 **temp1_crit**
164 164
165 **temp1_crit_alarm** 165 **temp1_crit_alarm**
166 166
167 **temp1_max** 167 **temp1_max**
168 168
169 **temp1_max_alarm** 169 **temp1_max_alarm**
170 170
171 **temp2_input** 171 **temp2_input**
172 172
173 **temp2_crit** 173 **temp2_crit**
174 174
175 **temp2_crit_alarm** 175 **temp2_crit_alarm**
176 176
177 **temp2_max** 177 **temp2_max**
178 178
179 **temp2_max_alarm** 179 **temp2_max_alarm**
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