ASoC: audio-graph-card: switch to yaml base Documentation

This patch switches from .txt base to .yaml base Document.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/87d00sbawh.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/audio-graph-card.txt

-Audio Graph Card:
-
-Audio Graph Card specifies audio DAI connections of SoC <-> codec.
-It is based on common bindings for device graphs.
-see ${LINUX}/Documentation/devicetree/bindings/graph.txt
-
-Basically, Audio Graph Card property is same as Simple Card.
-see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.yaml
-
-Below are same as Simple-Card.
-
-- label
-- widgets
-- routing
-- dai-format
-- frame-master
-- bitclock-master
-- bitclock-inversion
-- frame-inversion
-- mclk-fs
-- hp-det-gpio
-- mic-det-gpio
-- dai-tdm-slot-num
-- dai-tdm-slot-width
-- clocks / system-clock-frequency
-
-Required properties:
-
-- compatible				: "audio-graph-card";
-- dais					: list of CPU DAI port{s}
-
-Optional properties:
-- pa-gpios: GPIO used to control external amplifier.
-
------------------------
-Example: Single DAI case
------------------------
-
-	sound_card {
-		compatible = "audio-graph-card";
-
-		dais = <&cpu_port>;
-	};
-
-	dai-controller {
-		...
-		cpu_port: port {
-			cpu_endpoint: endpoint {
-				remote-endpoint = <&codec_endpoint>;
-
-				dai-format = "left_j";
-				...
-			};
-		};
-	};
-
-	audio-codec {
-		...
-		port {
-			codec_endpoint: endpoint {
-				remote-endpoint = <&cpu_endpoint>;
-			};
-		};
-	};
-
------------------------
-Example: Multi DAI case
------------------------
-
-	sound-card {
-		compatible = "audio-graph-card";
-
-		label = "sound-card";
-
-		dais = <&cpu_port0
-			&cpu_port1
-			&cpu_port2>;
-	};
-
-	audio-codec@0 {
-		...
-		port {
-			codec0_endpoint: endpoint {
-				remote-endpoint = <&cpu_endpoint0>;
-			};
-		};
-	};
-
-	audio-codec@1 {
-		...
-		port {
-			codec1_endpoint: endpoint {
-				remote-endpoint = <&cpu_endpoint1>;
-			};
-		};
-	};
-
-	audio-codec@2 {
-		...
-		port {
-			codec2_endpoint: endpoint {
-				remote-endpoint = <&cpu_endpoint2>;
-			};
-		};
-	};
-
-	dai-controller {
-		...
-		ports {
-			cpu_port0: port@0 {
-				cpu_endpoint0: endpoint {
-					remote-endpoint = <&codec0_endpoint>;
-
-					dai-format = "left_j";
-					...
-				};
-			};
-			cpu_port1: port@1 {
-				cpu_endpoint1: endpoint {
-					remote-endpoint = <&codec1_endpoint>;
-
-					dai-format = "i2s";
-					...
-				};
-			};
-			cpu_port2: port@2 {
-				cpu_endpoint2: endpoint {
-					remote-endpoint = <&codec2_endpoint>;
-
-					dai-format = "i2s";
-					...
-				};
-			};
-		};
-	};
-
-
------------------------
-Example: Sampling Rate Conversion
------------------------
-
-	sound_card {
-		compatible = "audio-graph-card";
-
-		label = "sound-card";
-		prefix = "codec";
-		routing = "codec Playback", "DAI0 Playback",
-			  "DAI0 Capture",   "codec Capture";
-		convert-rate = <48000>;
-
-		dais = <&cpu_port>;
-	};
-
-	audio-codec {
-		...
-		port {
-			codec_endpoint: endpoint {
-				remote-endpoint = <&cpu_endpoint>;
-			};
-		};
-	};
-
-	dai-controller {
-		...
-		cpu_port: port {
-			cpu_endpoint: endpoint {
-				remote-endpoint = <&codec_endpoint>;
-
-				dai-format = "left_j";
-				...
-			};
-		};
-	};
-
------------------------
-Example: 2 CPU 1 Codec (Mixing)
------------------------
-
-	sound_card {
-		compatible = "audio-graph-card";
-
-		label = "sound-card";
-		routing = "codec Playback", "DAI0 Playback",
-			  "codec Playback", "DAI1 Playback",
-			  "DAI0 Capture",   "codec Capture";
-
-		dais = <&cpu_port>;
-	};
-
-	audio-codec {
-		...
-
-		audio-graph-card,prefix = "codec";
-		audio-graph-card,convert-rate = <48000>;
-		port {
-			reg = <0>;
-			codec_endpoint0: endpoint@0 {
-				remote-endpoint = <&cpu_endpoint0>;
-			};
-			codec_endpoint1: endpoint@1 {
-				remote-endpoint = <&cpu_endpoint1>;
-			};
-		};
-	};
-
-	dai-controller {
-		...
-		cpu_port: port {
-			cpu_endpoint0: endpoint@0 {
-				remote-endpoint = <&codec_endpoint0>;
-
-				dai-format = "left_j";
-				...
-			};
-			cpu_endpoint1: endpoint@1 {
-				remote-endpoint = <&codec_endpoint1>;
-
-				dai-format = "left_j";
-				...
-			};
-		};
-	};
-
------------------------
-Example: Multi DAI with DPCM
------------------------
-
-	CPU0 ------ ak4613
-	CPU1 ------ HDMI
-	CPU2 ------ PCM3168A-p	/* DPCM 1ch/2ch */
-	CPU3 --/		/* DPCM 3ch/4ch */
-	CPU4 --/		/* DPCM 5ch/6ch */
-	CPU5 --/		/* DPCM 7ch/8ch */
-	CPU6 ------ PCM3168A-c
-
-	sound_card: sound {
-		compatible = "audio-graph-card";
-
-		label = "sound-card";
-
-		routing =	"pcm3168a Playback", "DAI2 Playback",
-				"pcm3168a Playback", "DAI3 Playback",
-				"pcm3168a Playback", "DAI4 Playback",
-				"pcm3168a Playback", "DAI5 Playback";
-
-		dais = <&snd_port0	/* ak4613 */
-			&snd_port1	/* HDMI0  */
-			&snd_port2	/* pcm3168a playback */
-			&snd_port3	/* pcm3168a capture  */
-			>;
-	};
-
-	ak4613: codec@10 {
-		...
-		port {
-			ak4613_endpoint: endpoint {
-				remote-endpoint = <&rsnd_endpoint0>;
-			};
-		};
-	};
-
-	pcm3168a: audio-codec@44 {
-		...
-		audio-graph-card,prefix = "pcm3168a";
-		audio-graph-card,convert-channels = <8>; /* TDM Split */
-		ports {
-			port@0 {
-				reg = <0>;
-				pcm3168a_endpoint_p1: endpoint@1 {
-					remote-endpoint = <&rsnd_endpoint2>;
-					...
-				};
-				pcm3168a_endpoint_p2: endpoint@2 {
-					remote-endpoint = <&rsnd_endpoint3>;
-					...
-				};
-				pcm3168a_endpoint_p3: endpoint@3 {
-					remote-endpoint = <&rsnd_endpoint4>;
-					...
-				};
-				pcm3168a_endpoint_p4: endpoint@4 {
-					remote-endpoint = <&rsnd_endpoint5>;
-					...
-				};
-			};
-			port@1 {
-				reg = <1>;
-				pcm3168a_endpoint_c: endpoint {
-					remote-endpoint = <&rsnd_endpoint6>;
-					...
-				};
-			};
-		};
-	};
-
-	&sound {
-		ports {
-			snd_port0: port@0 {
-				rsnd_endpoint0: endpoint {
-					remote-endpoint = <&ak4613_endpoint>;
-					...
-				};
-			};
-			snd_port1: port@1 {
-				rsnd_endpoint1: endpoint {
-					remote-endpoint = <&dw_hdmi0_snd_in>;
-					...
-				};
-			};
-			snd_port2: port@2 {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				rsnd_endpoint2: endpoint@2 {
-					remote-endpoint = <&pcm3168a_endpoint_p1>;
-					...
-				};
-				rsnd_endpoint3: endpoint@3 {
-					remote-endpoint = <&pcm3168a_endpoint_p2>;
-					...
-				};
-				rsnd_endpoint4: endpoint@4 {
-					remote-endpoint = <&pcm3168a_endpoint_p3>;
-					...
-				};
-				rsnd_endpoint5: endpoint@5 {
-					remote-endpoint = <&pcm3168a_endpoint_p4>;
-					...
-				};
-			};
-			snd_port3: port@6 {
-				rsnd_endpoint6: endpoint {
-					remote-endpoint = <&pcm3168a_endpoint_c>;
-					...
-				};
-			};
-		};
-	};

Documentation/devicetree/bindings/sound/audio-graph-card.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/audio-graph-card.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph Card Driver Device Tree Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+properties:
+  compatible:
+    enum:
+      - audio-graph-card
+      - audio-graph-scu-card
+
+  dais:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+  label:
+    maxItems: 1
+  prefix:
+    description: "device name prefix"
+    $ref: /schemas/types.yaml#/definitions/string
+  routing:
+    description: |
+      A list of the connections between audio components.
+      Each entry is a pair of strings, the first being the
+      connection's sink, the second being the connection's source.
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+  widgets:
+    description: User specified audio sound widgets.
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+  convert-rate:
+    description: CPU to Codec rate convert.
+    $ref: /schemas/types.yaml#/definitions/uint32
+  convert-channels:
+    description: CPU to Codec rate channels.
+    $ref: /schemas/types.yaml#/definitions/uint32
+  pa-gpios:
+    maxItems: 1
+  hp-det-gpio:
+    maxItems: 1
+  mic-det-gpio:
+    maxItems: 1
+
+  port:
+    description: single OF-Graph subnode
+    type: object
+    properties:
+      reg:
+        maxItems: 1
+      prefix:
+        description: "device name prefix"
+        $ref: /schemas/types.yaml#/definitions/string
+      convert-rate:
+        description: CPU to Codec rate convert.
+        $ref: /schemas/types.yaml#/definitions/uint32
+      convert-channels:
+        description: CPU to Codec rate channels.
+        $ref: /schemas/types.yaml#/definitions/uint32
+    patternProperties:
+      "^endpoint(@[0-9a-f]+)?":
+        type: object
+        properties:
+          remote-endpoint:
+            maxItems: 1
+          mclk-fs:
+            description: |
+              Multiplication factor between stream rate and codec mclk.
+              When defined, mclk-fs property defined in dai-link sub nodes are ignored.
+            $ref: /schemas/types.yaml#/definitions/uint32
+          frame-inversion:
+            description: dai-link uses frame clock inversion
+            $ref: /schemas/types.yaml#/definitions/flag
+          bitclock-inversion:
+            description: dai-link uses bit clock inversion
+            $ref: /schemas/types.yaml#/definitions/flag
+          frame-master:
+            description: Indicates dai-link frame master.
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+            maxItems: 1
+          bitclock-master:
+            description: Indicates dai-link bit clock master
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+            maxItems: 1
+          dai-format:
+            description: audio format.
+            items:
+              enum:
+                - i2s
+                - right_j
+                - left_j
+                - dsp_a
+                - dsp_b
+                - ac97
+                - pdm
+                - msb
+                - lsb
+          convert-rate:
+            description: CPU to Codec rate convert.
+            $ref: /schemas/types.yaml#/definitions/uint32
+          convert-channels:
+            description: CPU to Codec rate channels.
+            $ref: /schemas/types.yaml#/definitions/uint32
+        required:
+          - remote-endpoint
+
+  ports:
+    description: multi OF-Graph subnode
+    type: object
+    patternProperties:
+      "^port(@[0-9a-f]+)?":
+        $ref: "#/properties/port"
+
+required:
+  - compatible
+  - dais
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "audio-graph-card";
+
+        dais = <&cpu_port_a>;
+    };
+
+    cpu {
+        /*
+         * dai-controller own settings
+         */
+
+        port {
+            cpu_endpoint: endpoint {
+                remote-endpoint = <&codec_endpoint>;
+                dai-format = "left_j";
+            };
+        };
+    };
+
+    codec {
+        /*
+         * codec own settings
+         */
+
+        port {
+            codec_endpoint: endpoint {
+                remote-endpoint = <&cpu_endpoint>;
+            };
+        };
+    };