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