1 Kernel driver tps40422 1 Kernel driver tps40422
2 ====================== 2 ======================
3 3
4 Supported chips: 4 Supported chips:
5 5
6 * TI TPS40422 6 * TI TPS40422
7 7
8 Prefix: 'tps40422' 8 Prefix: 'tps40422'
9 9
10 Addresses scanned: - 10 Addresses scanned: -
11 11
12 Datasheet: https://www.ti.com/lit/gpn/tps4 12 Datasheet: https://www.ti.com/lit/gpn/tps40422
13 13
14 Author: Zhu Laiwen <richard.zhu@nsn.com> 14 Author: Zhu Laiwen <richard.zhu@nsn.com>
15 15
16 16
17 Description 17 Description
18 ----------- 18 -----------
19 19
20 This driver supports TI TPS40422 Dual-Output o 20 This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
21 Controller with PMBus 21 Controller with PMBus
22 22
23 The driver is a client driver to the core PMBu 23 The driver is a client driver to the core PMBus driver.
24 Please see Documentation/hwmon/pmbus.rst for d 24 Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
25 25
26 26
27 Usage Notes 27 Usage Notes
28 ----------- 28 -----------
29 29
30 This driver does not auto-detect devices. You 30 This driver does not auto-detect devices. You will have to instantiate the
31 devices explicitly. Please see Documentation/i 31 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
32 details. 32 details.
33 33
34 34
35 Platform data support 35 Platform data support
36 --------------------- 36 ---------------------
37 37
38 The driver supports standard PMBus driver plat 38 The driver supports standard PMBus driver platform data.
39 39
40 40
41 Sysfs entries 41 Sysfs entries
42 ------------- 42 -------------
43 43
44 The following attributes are supported. 44 The following attributes are supported.
45 45
46 ======================= ====================== 46 ======================= =======================================================
47 in[1-2]_label "vout[1-2]" 47 in[1-2]_label "vout[1-2]"
48 in[1-2]_input Measured voltage. From 48 in[1-2]_input Measured voltage. From READ_VOUT register.
49 in[1-2]_alarm voltage alarm. 49 in[1-2]_alarm voltage alarm.
50 50
51 curr[1-2]_input Measured current. From 51 curr[1-2]_input Measured current. From READ_IOUT register.
52 curr[1-2]_label "iout[1-2]" 52 curr[1-2]_label "iout[1-2]"
53 curr1_max Maximum current. From 53 curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
54 curr1_crit Critical maximum curre 54 curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT
55 register. 55 register.
56 curr1_max_alarm Current high alarm. Fr 56 curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status.
57 curr1_crit_alarm Current critical high 57 curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
58 curr2_alarm Current high alarm. Fr 58 curr2_alarm Current high alarm. From IOUT_OC_WARNING status.
59 59
60 temp1_input Measured temperature. 60 temp1_input Measured temperature. From READ_TEMPERATURE_2 register
61 on page 0. 61 on page 0.
62 temp1_max Maximum temperature. F 62 temp1_max Maximum temperature. From OT_WARN_LIMIT register.
63 temp1_crit Critical high temperat 63 temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
64 temp1_max_alarm Chip temperature high 64 temp1_max_alarm Chip temperature high alarm. Set by comparing
65 READ_TEMPERATURE_2 on 65 READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if
66 TEMP_OT_WARNING status 66 TEMP_OT_WARNING status is set.
67 temp1_crit_alarm Chip temperature criti 67 temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
68 READ_TEMPERATURE_2 on 68 READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if
69 TEMP_OT_FAULT status i 69 TEMP_OT_FAULT status is set.
70 temp2_input Measured temperature. 70 temp2_input Measured temperature. From READ_TEMPERATURE_2 register
71 on page 1. 71 on page 1.
72 temp2_alarm Chip temperature alarm 72 temp2_alarm Chip temperature alarm on page 1.
73 ======================= ====================== 73 ======================= =======================================================
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