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-Texas Instruments INA3221 Device Tree Bindings
-
-1) ina3221 node
- Required properties:
- - compatible: Must be "ti,ina3221"
- - reg: I2C address
-
- Optional properties:
- - ti,single-shot: This chip has two power modes: single-shot (chip takes one
- measurement and then shuts itself down) and continuous (
- chip takes continuous measurements). The continuous mode is
- more reliable and suitable for hardware monitor type device,
- but the single-shot mode is more power-friendly and useful
- for battery-powered device which cares power consumptions
- while still needs some measurements occasionally.
- If this property is present, the single-shot mode will be
- used, instead of the default continuous one for monitoring.
-
- = The node contains optional child nodes for three channels =
- = Each child node describes the information of input source =
-
- - #address-cells: Required only if a child node is present. Must be 1.
- - #size-cells: Required only if a child node is present. Must be 0.
-
-2) child nodes
- Required properties:
- - reg: Must be 0, 1 or 2, corresponding to IN1, IN2 or IN3 port of INA3221
-
- Optional properties:
- - label: Name of the input source
- - shunt-resistor-micro-ohms: Shunt resistor value in micro-Ohm
-
-Example:
-
-ina3221@40 {
- compatible = "ti,ina3221";
- reg = <0x40>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- input@0 {
- reg = <0x0>;
- status = "disabled";
- };
- input@1 {
- reg = <0x1>;
- shunt-resistor-micro-ohms = <5000>;
- };
- input@2 {
- reg = <0x2>;
- label = "VDD_5V";
- shunt-resistor-micro-ohms = <5000>;
- };
-};
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ti,ina3221.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments INA3221 Current and Voltage Monitor
+
+maintainers:
+ - Jean Delvare <jdelvare@suse.com>
+ - Guenter Roeck <linux@roeck-us.net>
+
+properties:
+ compatible:
+ const: ti,ina3221
+
+ reg:
+ maxItems: 1
+
+ ti,single-shot:
+ description: |
+ This chip has two power modes: single-shot (chip takes one measurement
+ and then shuts itself down) and continuous (chip takes continuous
+ measurements). The continuous mode is more reliable and suitable for
+ hardware monitor type device, but the single-shot mode is more power-
+ friendly and useful for battery-powered device which cares power
+ consumptions while still needs some measurements occasionally.
+
+ If this property is present, the single-shot mode will be used, instead
+ of the default continuous one for monitoring.
+ $ref: /schemas/types.yaml#/definitions/flag
+
+ "#address-cells":
+ description: Required only if a child node is present.
+ const: 1
+
+ "#size-cells":
+ description: Required only if a child node is present.
+ const: 0
+
+patternProperties:
+ "^input@[0-2]$":
+ description: The node contains optional child nodes for three channels.
+ Each child node describes the information of input source. Input channels
+ default to enabled in the chip. Unless channels are explicitly disabled
+ in device-tree, input channels will be enabled.
+ type: object
+ additionalProperties: false
+ properties:
+ reg:
+ description: Must be 0, 1 and 2, corresponding to the IN1, IN2 or IN3
+ ports of the INA3221, respectively.
+ enum: [ 0, 1, 2 ]
+
+ label:
+ description: name of the input source
+
+ shunt-resistor-micro-ohms:
+ description: shunt resistor value in micro-Ohm
+
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ power-sensor@40 {
+ compatible = "ti,ina3221";
+ reg = <0x40>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ input@0 {
+ reg = <0x0>;
+ /*
+ * Input channels are enabled by default in the device and so
+ * to disable, must be explicitly disabled in device-tree.
+ */
+ status = "disabled";
+ };
+
+ input@1 {
+ reg = <0x1>;
+ shunt-resistor-micro-ohms = <5000>;
+ };
+
+ input@2 {
+ reg = <0x2>;
+ label = "VDD_5V";
+ shunt-resistor-micro-ohms = <5000>;
+ };
+ };
+ };