diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
index 8f608bf0b24d..9f7196d61ac3 100644
--- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
@@ -80,6 +80,27 @@ properties:
       ADCs usually allow choosing between internal reference sources or a pair
       of external pins.
 
+  excitation-channels:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      Excitation current sources provide current to resistive temperature
+      devices (RTDs), thermistors, diodes and other resistive sensors that
+      require constant current biasing.
+
+      This array describes the mux configuration of the excitation current
+      sources. The values correspond to pins similar to the diff-channels and
+      single-channel properties.
+
+  excitation-current-nanoamp:
+    description:
+      Excitation current sources provide current to resistive temperature
+      devices (RTDs), thermistors, diodes and other resistive sensors that
+      require constant current biasing.
+
+      This array describes the current configuration of the excitation current
+      sources. The index in the array corresponds to the same index in the
+      excitation-channels array.
+
 anyOf:
   - oneOf:
       - required: