[PATCH v7 2/6] dt-bindings: iio: adc: ad7192: Add aincom supply

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AINCOM should actually be a supply. AINx inputs are referenced to AINCOM
in pseudo-differential operation mode. AINCOM voltage represents the
offset of corresponding channels.

Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
Signed-off-by: Alisa-Dariana Roman <alisa.roman@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
index 16def2985ab4..cf5c568f140a 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
@@ -41,6 +41,11 @@ properties:
   interrupts:
     maxItems: 1
 
+  aincom-supply:
+    description: |
+      AINCOM voltage supply. Analog inputs AINx are referenced to this input
+      when configured for pseudo-differential operation.
+
   dvdd-supply:
     description: DVdd voltage supply
 
@@ -117,6 +122,7 @@ examples:
             clock-names = "mclk";
             interrupts = <25 0x2>;
             interrupt-parent = <&gpio>;
+            aincom-supply = <&aincom>;
             dvdd-supply = <&dvdd>;
             avdd-supply = <&avdd>;
             vref-supply = <&vref>;
-- 
2.34.1





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