[PATCH] ASoC: dt-bindings: everest,es8328: Document audio graph port

[Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>]

The ES8328/ES8388 audio codec is currently used in conjunction with
audio-graph-card to provide an endpoint for binding with the other side
of the audio link.

This is achieved via the 'port' property, which is not supported by the
binding:

  rk3588s-indiedroid-nova.dtb: audio-codec@11: 'port' does not match any of the regexes: 'pinctrl-[0-9]+'
    from schema $id: http://devicetree.org/schemas/sound/everest,es8328.yaml#

Document the missing property.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/sound/everest,es8328.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/everest,es8328.yaml b/Documentation/devicetree/bindings/sound/everest,es8328.yaml
index a0f4670fa38c8435b63566f7383c940b4950caa4..ed18e40dcaacf7eed39fa659795efb1518678379 100644
--- a/Documentation/devicetree/bindings/sound/everest,es8328.yaml
+++ b/Documentation/devicetree/bindings/sound/everest,es8328.yaml
@@ -50,6 +50,10 @@ properties:
   HPVDD-supply:
     description: Regulator providing analog output voltage 3.3V
 
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - clocks

---
base-commit: f2493655d2d3d5c6958ed996b043c821c23ae8d3
change-id: 20241019-es8328-doc-port-1065f8397e29