dt-bindings: net: make internal-delay-ps based on phy-mode

*-internal-delay-ps properties would be applicable only for RGMII interface
modes.

It is changed as per the request.

Ran dt_binding_check to confirm nothing is broken.

link: https://lore.kernel.org/netdev/d8e5f6a8-a7e1-dabd-f4b4-ea8ea21d0a1d@gmail.com/
Signed-off-by: Prasanna Vengateshan <prasanna.vengateshan@microchip.com>
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/ethernet-controller.yaml

@@ -133,12 +133,6 @@ properties:
       and is useful for determining certain configuration settings
       such as flow control thresholds.
 
-  rx-internal-delay-ps:
-    description: |
-      RGMII Receive Clock Delay defined in pico seconds.
-      This is used for controllers that have configurable RX internal delays.
-      If this property is present then the MAC applies the RX delay.
-
   sfp:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
@@ -150,12 +144,6 @@ properties:
       The size of the controller\'s transmit fifo in bytes. This
       is used for components that can have configurable fifo sizes.
 
-  tx-internal-delay-ps:
-    description: |
-      RGMII Transmit Clock Delay defined in pico seconds.
-      This is used for controllers that have configurable TX internal delays.
-      If this property is present then the MAC applies the TX delay.
-
   managed:
     description:
       Specifies the PHY management type. If auto is set and fixed-link
@@ -232,6 +220,29 @@ properties:
           required:
             - speed
 
+allOf:
+  - if:
+      properties:
+        phy-mode:
+          contains:
+            enum:
+              - rgmii
+              - rgmii-rxid
+              - rgmii-txid
+              - rgmii-id
+    then:
+      properties:
+        rx-internal-delay-ps:
+          description:
+            RGMII Receive Clock Delay defined in pico seconds.This is used for
+            controllers that have configurable RX internal delays. If this
+            property is present then the MAC applies the RX delay.
+        tx-internal-delay-ps:
+          description:
+            RGMII Transmit Clock Delay defined in pico seconds.This is used for
+            controllers that have configurable TX internal delays. If this
+            property is present then the MAC applies the TX delay.
+
 additionalProperties: true
 
 ...