diff --git a/Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml b/Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml
index 73252fe56fe6..37e3e4f48762 100644
--- a/Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml
+++ b/Documentation/devicetree/bindings/net/can/fsl,flexcan.yaml
@@ -77,6 +77,9 @@ properties:
   xceiver-supply:
     description: Regulator that powers the CAN transceiver.
 
+  phys:
+    maxItems: 1
+
   big-endian:
     $ref: /schemas/types.yaml#/definitions/flag
     description: |
@@ -171,6 +174,12 @@ allOf:
         interrupts:
           maxItems: 1
         interrupt-names: false
+  - if:
+      required:
+        - xceiver-supply
+    then:
+      properties:
+        phys: false
 
 additionalProperties: false