1 Kernel driver ina209
2 ====================
3
4 Supported chips:
5
6 * Burr-Brown / Texas Instruments INA209
7
8 Prefix: 'ina209'
9
10 Addresses scanned: -
11
12 Datasheet:
13 https://www.ti.com/lit/gpn/ina209
14
15 Author:
16 - Paul Hays <Paul.Hays@cattail.ca>
17 - Ira W. Snyder <iws@ovro.caltech.edu>
18 - Guenter Roeck <linux@roeck-us.net>
19
20
21 Description
22 -----------
23
24 The TI / Burr-Brown INA209 monitors voltage, c
25 of a D.C. power supply. It can perform measure
26 background to supply readings at any time. It
27 calibration multiplier to scale the displayed
28
29
30 Sysfs entries
31 -------------
32
33 The INA209 chip is highly configurable both vi
34 the I2C bus. See the datasheet for details.
35
36 This tries to expose most monitoring features
37 sysfs. It does not support every feature of th
38
39 ======================= ======================
40 in0_input shunt voltage (mV)
41 in0_input_highest shunt voltage historic
42 in0_input_lowest shunt voltage historic
43 in0_reset_history reset shunt voltage hi
44 in0_max shunt voltage max alar
45 in0_min shunt voltage min alar
46 in0_crit_max shunt voltage crit max
47 in0_crit_min shunt voltage crit min
48 in0_max_alarm shunt voltage max alar
49 in0_min_alarm shunt voltage min alar
50 in0_crit_max_alarm shunt voltage crit max
51 in0_crit_min_alarm shunt voltage crit min
52
53 in1_input bus voltage (mV)
54 in1_input_highest bus voltage historical
55 in1_input_lowest bus voltage historical
56 in1_reset_history reset bus voltage hist
57 in1_max bus voltage max alarm
58 in1_min bus voltage min alarm
59 in1_crit_max bus voltage crit max a
60 in1_crit_min bus voltage crit min a
61 in1_max_alarm bus voltage max alarm
62 in1_min_alarm bus voltage min alarm
63 in1_crit_max_alarm bus voltage crit max a
64 in1_crit_min_alarm bus voltage crit min a
65
66 power1_input power measurement (uW)
67 power1_input_highest power historical maxim
68 power1_reset_history reset power history
69 power1_max power max alarm limit
70 power1_crit power crit alarm limit
71 power1_max_alarm power max alarm limit
72 power1_crit_alarm power crit alarm limit
73
74 curr1_input current measurement (m
75
76 update_interval data conversion time;
77 to average results for
78 ======================= ======================
79
80 General Remarks
81 ---------------
82
83 The power and current registers in this chip r
84 register is programmed correctly before they a
85 to be done in the BIOS. In the absence of BIOS
86 voltage can be provided using platform data. T
87 the ina2xx driver for this purpose. If calibra
88 via platform data, the driver checks if the ca
89 programmed (ie has a value not equal to zero).
90 Otherwise, a default value reflecting a shunt
91 programmed into the calibration register.
92
93
94 Output Pins
95 -----------
96
97 Output pin programming is a board feature whic
98 outside the scope of a hardware monitoring dri
99 pins.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.