1Kernel driver tps40422
2======================
3
4Supported chips:
5
6  * TI TPS40422
7
8    Prefix: 'tps40422'
9
10    Addresses scanned: -
11
12    Datasheet: http://www.ti.com/lit/gpn/tps40422
13
14Author: Zhu Laiwen <richard.zhu@nsn.com>
15
16
17Description
18-----------
19
20This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
21Controller with PMBus
22
23The driver is a client driver to the core PMBus driver.
24Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
25
26
27Usage Notes
28-----------
29
30This driver does not auto-detect devices. You will have to instantiate the
31devices explicitly. Please see Documentation/i2c/instantiating-devices for
32details.
33
34
35Platform data support
36---------------------
37
38The driver supports standard PMBus driver platform data.
39
40
41Sysfs entries
42-------------
43
44The following attributes are supported.
45
46======================= =======================================================
47in[1-2]_label		"vout[1-2]"
48in[1-2]_input		Measured voltage. From READ_VOUT register.
49in[1-2]_alarm		voltage alarm.
50
51curr[1-2]_input		Measured current. From READ_IOUT register.
52curr[1-2]_label		"iout[1-2]"
53curr1_max		Maximum current. From IOUT_OC_WARN_LIMIT register.
54curr1_crit		Critical maximum current. From IOUT_OC_FAULT_LIMIT
55			register.
56curr1_max_alarm		Current high alarm. From IOUT_OC_WARN_LIMIT status.
57curr1_crit_alarm	Current critical high alarm. From IOUT_OC_FAULT status.
58curr2_alarm		Current high alarm. From IOUT_OC_WARNING status.
59
60temp1_input		Measured temperature. From READ_TEMPERATURE_2 register
61			on page 0.
62temp1_max		Maximum temperature. From OT_WARN_LIMIT register.
63temp1_crit		Critical high temperature. From OT_FAULT_LIMIT register.
64temp1_max_alarm		Chip temperature high alarm. Set by comparing
65			READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if
66			TEMP_OT_WARNING status is set.
67temp1_crit_alarm	Chip temperature critical high alarm. Set by comparing
68			READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if
69			TEMP_OT_FAULT status is set.
70temp2_input		Measured temperature. From READ_TEMPERATURE_2 register
71			on page 1.
72temp2_alarm		Chip temperature alarm on page 1.
73======================= =======================================================
74