1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 Kernel driver mp5990 3 Kernel driver mp5990
4 ==================== 4 ====================
5 5
6 Supported chips: 6 Supported chips:
7 7
8 * MPS MP5990 8 * MPS MP5990
9 9
10 Prefix: 'mp5990' 10 Prefix: 'mp5990'
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/mp5990.html
15 15
16 Author: 16 Author:
17 17
18 Peter Yin <peteryin.openbmc@gmail.com> 18 Peter Yin <peteryin.openbmc@gmail.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 MP5990 Hot-Swap Controller. 24 MP5990 Hot-Swap 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, output current, input power an 31 output voltage, output current, input power and temperature.
32 32
33 The driver exports the following attributes vi 33 The driver exports the following attributes via the 'sysfs' files
34 for input voltage: 34 for input voltage:
35 35
36 **in1_input** 36 **in1_input**
37 37
38 **in1_label** 38 **in1_label**
39 39
40 **in1_max** 40 **in1_max**
41 41
42 **in1_max_alarm** 42 **in1_max_alarm**
43 43
44 **in1_min** 44 **in1_min**
45 45
46 **in1_min_alarm** 46 **in1_min_alarm**
47 47
48 The driver provides the following attributes f 48 The driver provides the following attributes for output voltage:
49 49
50 **in2_input** 50 **in2_input**
51 51
52 **in2_label** 52 **in2_label**
53 53
54 **in2_alarm** 54 **in2_alarm**
55 55
56 The driver provides the following attributes f 56 The driver provides the following attributes for output current:
57 57
58 **curr1_input** 58 **curr1_input**
59 59
60 **curr1_label** 60 **curr1_label**
61 61
62 **curr1_alarm** 62 **curr1_alarm**
63 63
64 **curr1_max** 64 **curr1_max**
65 65
66 The driver provides the following attributes f 66 The driver provides the following attributes for input power:
67 67
68 **power1_input** 68 **power1_input**
69 69
70 **power1_label** 70 **power1_label**
71 71
72 **power1_alarm** 72 **power1_alarm**
73 73
74 The driver provides the following attributes f 74 The driver provides the following attributes for temperature:
75 75
76 **temp1_input** 76 **temp1_input**
77 77
78 **temp1_max** 78 **temp1_max**
79 79
80 **temp1_max_alarm** 80 **temp1_max_alarm**
81 81
82 **temp1_crit** 82 **temp1_crit**
83 83
84 **temp1_crit_alarm** 84 **temp1_crit_alarm**
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