[PATCH v2 2/2] ASoC: dt-bindings: renesas, rsnd: Clear warning 'ports' does not match any of the regexes

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Currently, if there are more than two ports, or if there is only one port
but other properties(such as "#address-cells") is required, these ports
are placed under the "ports" node. So add the schema of property "ports".

Otherwise, warnings similar to the following will be reported:
arch/arm64/boot/dts/renesas/r8a774a1-beacon-rzg2m-kit.dt.yaml: \
sound@ec500000: 'ports' does not match any of the regexes: \
'^rcar_sound,ctu$', '^rcar_sound,dai$', '^rcar_sound,dvc$', ...

Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/sound/renesas,rsnd.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
index 384191ee497f534..a42992fa687d3f3 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
@@ -115,6 +115,11 @@ properties:
     $ref: audio-graph-port.yaml#
     unevaluatedProperties: false
 
+  ports:
+    patternProperties:
+      '^port@[0-9]':
+        $ref: "#/properties/port"
+
 # use patternProperties to avoid naming "xxx,yyy" issue
 patternProperties:
   "^rcar_sound,dvc$":
-- 
1.8.3





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