diff --git a/Documentation/devicetree/bindings/net/can/xilinx,can.yaml b/Documentation/devicetree/bindings/net/can/xilinx,can.yaml
index e705c719f7b5..18015e60fd6d 100644
--- a/Documentation/devicetree/bindings/net/can/xilinx,can.yaml
+++ b/Documentation/devicetree/bindings/net/can/xilinx,can.yaml
@@ -53,6 +53,9 @@ properties:
     $ref: /schemas/types.yaml#/definitions/flag
     description: CAN TX_OL, TX_TL and RX FIFOs have ECC support(AXI CAN)
 
+  phys:
+    maxItems: 1
+
 required:
   - compatible
   - reg