xref: /linux/Documentation/hwmon/mp2888.rst (revision bdd1a21b52557ea8f61d0a5dc2f77151b576eb70) 
1.. SPDX-License-Identifier: GPL-2.0
2
3Kernel driver mp2888
4====================
5
6Supported chips:
7
8  * MPS MP12254
9
10    Prefix: 'mp2888'
11
12Author:
13
14	Vadim Pasternak <vadimp@nvidia.com>
15
16Description
17-----------
18
19This driver implements support for Monolithic Power Systems, Inc. (MPS)
20vendor dual-loop, digital, multi-phase controller MP2888.
21
22This device: supports:
23
24- One power rail.
25- Programmable Multi-Phase up to 10 Phases.
26- PWM-VID Interface
27- One pages 0 for telemetry.
28- Programmable pins for PMBus Address.
29- Built-In EEPROM to Store Custom Configurations.
30
31Device complaint with:
32
33- PMBus rev 1.3 interface.
34
35Device supports direct format for reading output current, output voltage,
36input and output power and temperature.
37Device supports linear format for reading input voltage and input power.
38
39The driver provides the next attributes for the current:
40
41- for current out input and maximum alarm;
42- for phase current: input and label.
43
44The driver exports the following attributes via the 'sysfs' files, where:
45
46- 'n' is number of configured phases (from 1 to 10);
47- index 1 for "iout";
48- indexes 2 ... 1 + n for phases.
49
50**curr[1-{1+n}]_input**
51
52**curr[1-{1+n}]_label**
53
54**curr1_max**
55
56**curr1_max_alarm**
57
58The driver provides the next attributes for the voltage:
59
60- for voltage in: input, low and high critical thresholds, low and high
61  critical alarms;
62- for voltage out: input and high alarm;
63
64The driver exports the following attributes via the 'sysfs' files, where
65
66**in1_crit**
67
68**in1_crit_alarm**
69
70**in1_input**
71
72**in1_label**
73
74**in1_min**
75
76**in1_min_alarm**
77
78**in2_alarm**
79
80**in2_input**
81
82**in2_label**
83
84The driver provides the next attributes for the power:
85
86- for power in alarm and input.
87- for power out: cap, cap alarm an input.
88
89The driver exports the following attributes via the 'sysfs' files, where
90- indexes 1 for "pin";
91- indexes 2 for "pout";
92
93**power1_alarm**
94
95**power1_input**
96
97**power1_label**
98
99**power2_input**
100
101**power2_label**
102
103**power2_max**
104
105**power2_max_alarm**
106
107The driver provides the next attributes for the temperature:
108
109**temp1_input**
110
111**temp1_max**
112
113**temp1_max_alarm**
114