1.. SPDX-License-Identifier: GPL-2.0-or-later
2
3Kernel driver max20730
4======================
5
6Supported chips:
7
8  * Maxim MAX20730
9
10    Prefix: 'max20730'
11
12    Addresses scanned: -
13
14    Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX20730.pdf
15
16  * Maxim MAX20734
17
18    Prefix: 'max20734'
19
20    Addresses scanned: -
21
22    Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX20734.pdf
23
24  * Maxim MAX20743
25
26    Prefix: 'max20743'
27
28    Addresses scanned: -
29
30    Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX20743.pdf
31
32Author: Guenter Roeck <linux@roeck-us.net>
33
34
35Description
36-----------
37
38This driver implements support for Maxim MAX20730, MAX20734, and MAX20743
39Integrated, Step-Down Switching Regulators with PMBus support.
40
41The driver is a client driver to the core PMBus driver.
42Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
43
44
45Usage Notes
46-----------
47
48This driver does not auto-detect devices. You will have to instantiate the
49devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
50details.
51
52
53Sysfs entries
54-------------
55
56=================== ===== =======================================================
57curr1_crit          RW/RO Critical output current. Please see datasheet for
58                          supported limits. Read-only if the chip is
59                          write protected; read-write otherwise.
60curr1_crit_alarm    RO    Output current critical alarm
61curr1_input         RO    Output current
62curr1_label         RO    'iout1'
63in1_alarm           RO    Input voltage alarm
64in1_input           RO    Input voltage
65in1_label           RO    'vin'
66in2_alarm           RO    Output voltage alarm
67in2_input           RO    Output voltage
68in2_label           RO    'vout1'
69temp1_crit          RW/RO Critical temeperature. Supported values are 130 or 150
70                          degrees C. Read-only if the chip is write protected;
71                          read-write otherwise.
72temp1_crit_alarm    RO    Temperature critical alarm
73temp1_input         RO    Chip temperature
74=================== ===== =======================================================
75