1 Texas Instruments INA3221 Device Tree Bindings
2
3 1) ina3221 node
4 Required properties:
5 - compatible: Must be "ti,ina3221"
6 - reg: I2C address
7
8 Optional properties:
9 - ti,single-shot: This chip has two power modes: single-shot (chip takes one
10 measurement and then shuts itself down) and continuous (
11 chip takes continuous measurements). The continuous mode is
12 more reliable and suitable for hardware monitor type device,
13 but the single-shot mode is more power-friendly and useful
14 for battery-powered device which cares power consumptions
15 while still needs some measurements occasionally.
16 If this property is present, the single-shot mode will be
17 used, instead of the default continuous one for monitoring.
18
19 = The node contains optional child nodes for three channels =
20 = Each child node describes the information of input source =
21
22 - #address-cells: Required only if a child node is present. Must be 1.
23 - #size-cells: Required only if a child node is present. Must be 0.
24
25 2) child nodes
26 Required properties:
27 - reg: Must be 0, 1 or 2, corresponding to IN1, IN2 or IN3 port of INA3221
28
29 Optional properties:
30 - label: Name of the input source
31 - shunt-resistor-micro-ohms: Shunt resistor value in micro-Ohm
32
33 Example:
34
35 ina3221@40 {
36 compatible = "ti,ina3221";
37 reg = <0x40>;
38 #address-cells = <1>;
39 #size-cells = <0>;
40
41 input@0 {
42 reg = <0x0>;
43 status = "disabled";
44 };
45 input@1 {
46 reg = <0x1>;
47 shunt-resistor-micro-ohms = <5000>;
48 };
49 input@2 {
50 reg = <0x2>;
51 label = "VDD_5V";
52 shunt-resistor-micro-ohms = <5000>;
53 };
54 };
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