Texas Instruments INA3221 Device Tree Bindings
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1) ina3221 node
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Required properties:
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- compatible: Must be "ti,ina3221"
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- reg: I2C address
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Optional properties:
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- ti,single-shot: This chip has two power modes: single-shot (chip takes one
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measurement and then shuts itself down) and continuous (
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chip takes continuous measurements). The continuous mode is
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more reliable and suitable for hardware monitor type device,
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but the single-shot mode is more power-friendly and useful
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for battery-powered device which cares power consumptions
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while still needs some measurements occasionally.
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If this property is present, the single-shot mode will be
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used, instead of the default continuous one for monitoring.
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= The node contains optional child nodes for three channels =
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= Each child node describes the information of input source =
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- #address-cells: Required only if a child node is present. Must be 1.
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- #size-cells: Required only if a child node is present. Must be 0.
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2) child nodes
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Required properties:
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- reg: Must be 0, 1 or 2, corresponding to IN1, IN2 or IN3 port of INA3221
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Optional properties:
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- label: Name of the input source
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- shunt-resistor-micro-ohms: Shunt resistor value in micro-Ohm
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Example:
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ina3221@40 {
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compatible = "ti,ina3221";
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reg = <0x40>;
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#address-cells = <1>;
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#size-cells = <0>;
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input@0 {
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reg = <0x0>;
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status = "disabled";
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};
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input@1 {
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reg = <0x1>;
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shunt-resistor-micro-ohms = <5000>;
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};
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input@2 {
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reg = <0x2>;
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label = "VDD_5V";
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shunt-resistor-micro-ohms = <5000>;
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};
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};
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