The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/hwmon/ina3221.txt

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    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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