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[1/2] dt-bindings: ad5272: Add bindings for Analog Devices digital potentiometers

Message ID 1515565051-72535-2-git-send-email-preid@electromag.com.au (mailing list archive)
State New, archived
Headers show

Commit Message

Phil Reid Jan. 10, 2018, 6:17 a.m. UTC 
Add binding documentation for Analog Devices AD5272 and AD5274 digital
potentiometer devices.

Signed-off-by: Phil Reid <preid@electromag.com.au>
---
 .../bindings/iio/potentiometer/ad5272.txt          | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt
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diff --git a/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt b/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt
new file mode 100644
index 0000000..dde4c67
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+++ b/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt
@@ -0,0 +1,27 @@ 
+* Analog Devices AD5272 digital potentiometer driver
+
+The node for this driver must be a child node of a I2C controller, hence
+all mandatory properties for your controller must be specified. See directory:
+
+        Documentation/devicetree/bindings/i2c
+
+for more details.
+
+Required properties:
+	- compatible:  	Must be one of the following, depending on the model:
+			adi,ad5272-020
+			adi,ad5272-050
+			adi,ad5272-100
+			adi,ad5274-020
+			adi,ad5274-100
+
+Optional properties:
+ - reset-gpios: GPIO specification for the RESET input. This is an
+		active low signal to the PCA953x.
+
+Example:
+ad5272: ad5272@2f {
+	reg = <0x2F>;
+	compatible = "adi,ad5272-020";
+	reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
+};