Merge tag 'bitmain-soc-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mani...
[sfrench/cifs-2.6.git] / Documentation / hwmon / tps40422
1 Kernel driver tps40422
2 ======================
3
4 Supported chips:
5   * TI TPS40422
6     Prefix: 'tps40422'
7     Addresses scanned: -
8     Datasheet: http://www.ti.com/lit/gpn/tps40422
9
10 Author: Zhu Laiwen <richard.zhu@nsn.com>
11
12
13 Description
14 -----------
15
16 This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
17 Controller with PMBus
18
19 The driver is a client driver to the core PMBus driver.
20 Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
21
22
23 Usage Notes
24 -----------
25
26 This driver does not auto-detect devices. You will have to instantiate the
27 devices explicitly. Please see Documentation/i2c/instantiating-devices for
28 details.
29
30
31 Platform data support
32 ---------------------
33
34 The driver supports standard PMBus driver platform data.
35
36
37 Sysfs entries
38 -------------
39
40 The following attributes are supported.
41
42 in[1-2]_label           "vout[1-2]"
43 in[1-2]_input           Measured voltage. From READ_VOUT register.
44 in[1-2]_alarm           voltage alarm.
45
46 curr[1-2]_input         Measured current. From READ_IOUT register.
47 curr[1-2]_label         "iout[1-2]"
48 curr1_max               Maximum current. From IOUT_OC_WARN_LIMIT register.
49 curr1_crit              Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
50 curr1_max_alarm         Current high alarm. From IOUT_OC_WARN_LIMIT status.
51 curr1_crit_alarm        Current critical high alarm. From IOUT_OC_FAULT status.
52 curr2_alarm             Current high alarm. From IOUT_OC_WARNING status.
53
54 temp1_input             Measured temperature. From READ_TEMPERATURE_2 register on page 0.
55 temp1_max               Maximum temperature. From OT_WARN_LIMIT register.
56 temp1_crit              Critical high temperature. From OT_FAULT_LIMIT register.
57 temp1_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.
60 temp1_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.
63 temp2_input             Measured temperature. From READ_TEMPERATURE_2 register on page 1.
64 temp2_alarm             Chip temperature alarm on page 1.