[PATCH 2/3] ASoC: dt-bindings: realtek,rt5616: Document audio graph port

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

Document the 'port' property that is used for this to prevent
dtbscheck errors like:

    rockchip/rk3588-nanopc-t6-lts.dtb: codec@1b: Unevaluated properties are not allowed ('port' was unexpected)
        from schema $id: http://devicetree.org/schemas/sound/realtek,rt5616.yaml#

Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
 Documentation/devicetree/bindings/sound/realtek,rt5616.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/realtek,rt5616.yaml b/Documentation/devicetree/bindings/sound/realtek,rt5616.yaml
index 754111f2e70a..29071044c66e 100644
--- a/Documentation/devicetree/bindings/sound/realtek,rt5616.yaml
+++ b/Documentation/devicetree/bindings/sound/realtek,rt5616.yaml
@@ -38,6 +38,10 @@ properties:
     items:
       - const: mclk
 
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
-- 
2.43.0





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