linux-kernel - [PATCH 1/4] ASoC: dt-bindings: fsl,sai: Document audio graph port

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Message-Id: <20250226100508.2352568-2-shengjiu.wang@nxp.com>
Date: Wed, 26 Feb 2025 18:05:05 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: shengjiu.wang@...il.com,
	Xiubo.Lee@...il.com,
	festevam@...il.com,
	nicoleotsuka@...il.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	linux-sound@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 1/4] ASoC: dt-bindings: fsl,sai: Document audio graph port

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@....com>
---
 .../devicetree/bindings/sound/fsl,sai.yaml    | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
index a5d9c246cc47..5c95508ee707 100644
--- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
@@ -93,6 +93,24 @@ properties:
     items:
       - description: receive and transmit interrupt
 
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+        description: port for TX and RX
+
+      port@1:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+        description: port for TX only
+
+      port@2:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+        description: port for RX only
+
   big-endian:
     description: |
       required if all the SAI registers are big-endian rather than little-endian.
@@ -204,4 +222,37 @@ examples:
         dma-names = "rx", "tx";
         fsl,dataline = <1 0xff 0xff 2 0xff 0x11>;
         #sound-dai-cells = <0>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@1 {
+                reg = <1>;
+                playback-only;
+
+                sai1_endpoint0: endpoint {
+                   dai-tdm-slot-num = <8>;
+                   dai-tdm-slot-width = <32>;
+                   dai-tdm-slot-width-map = <32 8 32>;
+                   dai-format = "dsp_a";
+                   bitclock-master;
+                   frame-master;
+                   remote-endpoint = <&mcodec01_ep>;
+                };
+            };
+
+            port@2 {
+                reg = <2>;
+                capture-only;
+
+                sai1_endpoint1: endpoint {
+                    dai-tdm-slot-num = <8>;
+                    dai-tdm-slot-width = <32>;
+                    dai-tdm-slot-width-map = <32 8 32>;
+                    dai-format = "dsp_a";
+                    remote-endpoint = <&fe02_ep>;
+                };
+            };
+        };
     };
-- 
2.34.1