diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
index 4dd5395730c1..2e3f84db6193 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
@@ -28,12 +28,21 @@ properties:
 
   clocks:
     maxItems: 1
-    description: phandle to the master clock (mclk)
+    description: Optional external clock connected to the CLK pin.
 
   clock-names:
+    deprecated: true
+    description:
+      MCLK is an internal counter in the ADC. Do not use this property.
     items:
       - const: mclk
 
+  '#clock-cells':
+    description:
+      The CLK pin can be used as an output. When that is the case, include
+      this property.
+    const: 0
+
   interrupts:
     description: IRQ line for the ADC
     maxItems: 1
@@ -67,10 +76,14 @@ properties:
 required:
   - compatible
   - reg
-  - clocks
-  - clock-names
   - interrupts
 
+# Can't have both clock input and output at the same time.
+not:
+  required:
+    - '#clock-cells'
+    - clocks
+
 patternProperties:
   "^channel@([0-9]|1[0-5])$":
     $ref: adc.yaml
@@ -136,8 +149,6 @@ examples:
         interrupt-parent = <&gpio>;
         rdy-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
         refin1-supply = <&adc_vref>;
-        clocks = <&ad7124_mclk>;
-        clock-names = "mclk";
 
         #address-cells = <1>;
         #size-cells = <0>;