[PATCH] ASoC: dt-bindings: fsl,imx-asrc: Document audio graph port

[Shengjiu Wang]

This device can be used in conjunction with audio-graph-card to provide
an endpoint for binding with the other side of the audio link.

Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
---
 .../devicetree/bindings/sound/fsl,imx-asrc.yaml      | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
index abac5084d63b..85799f83e65f 100644
--- a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
@@ -77,6 +77,10 @@ properties:
   power-domains:
     maxItems: 1
 
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
   fsl,asrc-rate:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: The mutual sample rate used by DPCM Back Ends
@@ -174,4 +178,12 @@ examples:
                     "txa", "txb", "txc";
         fsl,asrc-rate  = <48000>;
         fsl,asrc-width = <16>;
+
+        port {
+            playback-only;
+
+            asrc_endpoint: endpoint {
+                remote-endpoint = <&fe00_ep>;
+            };
+       };
     };
-- 
2.34.1