select: false
 
 properties:
-  port:
-    description: single OF-Graph subnode
+  reg:
+    maxItems: 1
+  prefix:
+    description: "device name prefix"
+    $ref: /schemas/types.yaml#/definitions/string
+  convert-rate:
+    description: CPU to Codec rate convert.
+    $ref: /schemas/types.yaml#/definitions/uint32
+  convert-channels:
+    description: CPU to Codec rate channels.
+    $ref: /schemas/types.yaml#/definitions/uint32
+patternProperties:
+  "^endpoint(@[0-9a-f]+)?":
     type: object
     properties:
-      reg:
+      remote-endpoint:
         maxItems: 1
-      prefix:
-        description: "device name prefix"
-        $ref: /schemas/types.yaml#/definitions/string
+      mclk-fs:
+        description: |
+          Multiplication factor between stream rate and codec mclk.
+          When defined, mclk-fs property defined in dai-link sub nodes are
+          ignored.
+        $ref: /schemas/types.yaml#/definitions/uint32
+      frame-inversion:
+        description: dai-link uses frame clock inversion
+        $ref: /schemas/types.yaml#/definitions/flag
+      bitclock-inversion:
+        description: dai-link uses bit clock inversion
+        $ref: /schemas/types.yaml#/definitions/flag
+      frame-master:
+        description: Indicates dai-link frame master.
+        $ref: /schemas/types.yaml#/definitions/phandle
+      bitclock-master:
+        description: Indicates dai-link bit clock master
+        $ref: /schemas/types.yaml#/definitions/phandle
+      dai-format:
+        description: audio format.
+        items:
+          enum:
+            - i2s
+            - right_j
+            - left_j
+            - dsp_a
+            - dsp_b
+            - ac97
+            - pdm
+            - msb
+            - lsb
       convert-rate:
         description: CPU to Codec rate convert.
         $ref: /schemas/types.yaml#/definitions/uint32
       convert-channels:
         description: CPU to Codec rate channels.
         $ref: /schemas/types.yaml#/definitions/uint32
-    patternProperties:
-      "^endpoint(@[0-9a-f]+)?":
-        type: object
-        properties:
-          remote-endpoint:
-            maxItems: 1
-          mclk-fs:
-            description: |
-              Multiplication factor between stream rate and codec mclk.
-              When defined, mclk-fs property defined in dai-link sub nodes are
-              ignored.
-            $ref: /schemas/types.yaml#/definitions/uint32
-          frame-inversion:
-            description: dai-link uses frame clock inversion
-            $ref: /schemas/types.yaml#/definitions/flag
-          bitclock-inversion:
-            description: dai-link uses bit clock inversion
-            $ref: /schemas/types.yaml#/definitions/flag
-          frame-master:
-            description: Indicates dai-link frame master.
-            $ref: /schemas/types.yaml#/definitions/phandle
-          bitclock-master:
-            description: Indicates dai-link bit clock master
-            $ref: /schemas/types.yaml#/definitions/phandle
-          dai-format:
-            description: audio format.
-            items:
-              enum:
-                - i2s
-                - right_j
-                - left_j
-                - dsp_a
-                - dsp_b
-                - ac97
-                - pdm
-                - msb
-                - lsb
-          convert-rate:
-            description: CPU to Codec rate convert.
-            $ref: /schemas/types.yaml#/definitions/uint32
-          convert-channels:
-            description: CPU to Codec rate channels.
-            $ref: /schemas/types.yaml#/definitions/uint32
-
-  ports:
-    description: multi OF-Graph subnode
-    type: object
-    patternProperties:
-      "^port(@[0-9a-f]+)?":
-        $ref: "#/properties/port"
 
 additionalProperties: true
 
 maintainers:
   - Lubomir Rintel <lkundrak@v3.sk>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^audio-controller(@.*)?$"
       - const: rx
 
   port:
-    type: object
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
 
     properties:
       endpoint:
 
   - Jon Hunter <jonathanh@nvidia.com>
   - Sameer Pujar <spujar@nvidia.com>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^dspk@[0-9a-f]*$"
       available instances on a Tegra SoC.
 
   ports:
-    type: object
+    $ref: /schemas/graph.yaml#/properties/ports
     properties:
       port@0:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           DSPK ACIF (Audio Client Interface) port connected to the
           corresponding AHUB (Audio Hub) ACIF port.
 
       port@1:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           DSPK DAP (Digital Audio Port) interface which can be connected
           to external audio codec for playback.
   - assigned-clock-parents
   - sound-name-prefix
 
-unevaluatedProperties: false
+additionalProperties: false
 
 examples:
   - |
 
   - Jon Hunter <jonathanh@nvidia.com>
   - Sameer Pujar <spujar@nvidia.com>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^admaif@[0-9a-f]*$"
   dma-names: true
 
   ports:
+    $ref: /schemas/graph.yaml#/properties/ports
     description: |
       Contains list of ACIF (Audio CIF) port nodes for ADMAIF channels.
       The number of port nodes depends on the number of ADMAIF channels
       in AHUB (Audio Hub). Each port is capable of data transfers in
       both directions.
 
+    patternProperties:
+      '^port@[0-9]':
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+
 if:
   properties:
     compatible:
   - dmas
   - dma-names
 
-unevaluatedProperties: false
+additionalProperties: false
 
 examples:
   - |
 
   - Jon Hunter <jonathanh@nvidia.com>
   - Sameer Pujar <spujar@nvidia.com>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^ahub@[0-9a-f]*$"
   ranges: true
 
   ports:
+    $ref: /schemas/graph.yaml#/properties/ports
     description: |
       Contains list of ACIF (Audio CIF) port nodes for AHUB (Audio Hub).
       These are connected to ACIF interfaces of AHUB clients. Thus the
       number of port nodes depend on the number of clients that AHUB may
       have depending on the SoC revision.
 
+    patternProperties:
+      '^port@[0-9]':
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+
 patternProperties:
   '^i2s@[0-9a-f]+$':
     type: object
   - "#size-cells"
   - ranges
 
-unevaluatedProperties: false
+additionalProperties: false
 
 examples:
   - |
 
   - Jon Hunter <jonathanh@nvidia.com>
   - Sameer Pujar <spujar@nvidia.com>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^dmic@[0-9a-f]*$"
       on the maximum available instances on a Tegra SoC.
 
   ports:
-    type: object
+    $ref: /schemas/graph.yaml#/properties/ports
     properties:
       port@0:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           DMIC ACIF (Audio Client Interface) port connected to the
           corresponding AHUB (Audio Hub) ACIF port.
 
       port@1:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           DMIC DAP (Digital Audio Port) interface which can be connected
           to external audio codec for capture.
   - assigned-clocks
   - assigned-clock-parents
 
-unevaluatedProperties: false
+additionalProperties: false
 
 examples:
   - |
 
   - Jon Hunter <jonathanh@nvidia.com>
   - Sameer Pujar <spujar@nvidia.com>
 
-allOf:
-  - $ref: audio-graph-port.yaml#
-
 properties:
   $nodename:
     pattern: "^i2s@[0-9a-f]*$"
       on the maximum available instances on a Tegra SoC.
 
   ports:
-    type: object
+    $ref: /schemas/graph.yaml#/properties/ports
     properties:
       port@0:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           I2S ACIF (Audio Client Interface) port connected to the
           corresponding AHUB (Audio Hub) ACIF port.
 
       port@1:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
         description: |
           I2S DAP (Digital Audio Port) interface which can be connected
           to external audio codec for playback or capture.
   - assigned-clocks
   - assigned-clock-parents
 
-unevaluatedProperties: false
+additionalProperties: false
 
 examples:
   - |
 
         - pattern: '^dvc\.[0-1]$'
         - pattern: '^clk_(a|b|c|i)$'
 
-  port: true
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
 
 # use patternProperties to avoid naming "xxx,yyy" issue
 patternProperties:
 
 allOf:
   - $ref: audio-graph.yaml#
-  - $ref: audio-graph-port.yaml#
   - if:
       properties:
         compatible: