From fe748da7c216528d46adb4c6f4a969346ec3a452 Mon Sep 17 00:00:00 2001
From: Olivier Moysan <olivier.moysan@foss.st.com>
Date: Tue, 6 Jun 2023 13:56:03 +0200
Subject: [PATCH] ASoC: dt-bindings: document audio of graph port for cs42l51

When linking the CS42L51 to another DAI component, according
to audio graph cards bindings, an OF graph port property is expected
in the node. Document the port property.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230606115605.1633595-3-olivier.moysan@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 .../devicetree/bindings/sound/cirrus,cs42l51.yaml     | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cirrus,cs42l51.yaml b/Documentation/devicetree/bindings/sound/cirrus,cs42l51.yaml
index 670b67ec0b61..f7bafbd4f1c2 100644
--- a/Documentation/devicetree/bindings/sound/cirrus,cs42l51.yaml
+++ b/Documentation/devicetree/bindings/sound/cirrus,cs42l51.yaml
@@ -44,6 +44,10 @@ properties:
   VAHP-supply:
     description: phandle to voltage regulator of headphone
 
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -69,6 +73,13 @@ examples:
         VA-supply = <&reg_audio>;
         VAHP-supply = <&reg_audio>;
         reset-gpios = <&gpiog 9 GPIO_ACTIVE_LOW>;
+
+        /* assume audio-graph */
+        port {
+          cpu_endpoint: endpoint {
+            remote-endpoint = <&cpu_endpoint>;
+          };
+        };
       };
     };
 ...
-- 
2.50.1