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authorNicolin Chen <nicoleotsuka@gmail.com>2018-10-01 18:05:22 -0700
committerGuenter Roeck <linux@roeck-us.net>2018-10-10 20:37:13 -0700
commit8b949c64d014c28b00472cb8eb9af78b95fc1d8c (patch)
tree4b82328bbb3e719c3c5cd3f977dd760bc53c42cc /Documentation/devicetree/bindings/hwmon
parenthwmon: (ina3221) Add suspend and resume functions (diff)
downloadlinux-dev-8b949c64d014c28b00472cb8eb9af78b95fc1d8c.tar.xz
linux-dev-8b949c64d014c28b00472cb8eb9af78b95fc1d8c.zip
dt-bindings: hwmon: Add ina3221 documentation
Texas Instruments INA3221 is a triple-channel shunt and bus voltage monitor. This patch adds a DT binding doc for it. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/devicetree/bindings/hwmon')
-rw-r--r--Documentation/devicetree/bindings/hwmon/ina3221.txt44
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diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt b/Documentation/devicetree/bindings/hwmon/ina3221.txt
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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:
+ = 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>;
+ };
+};