[PATCH v2 09/14] ASoC: audio-graph-card2: add Yaml Document

[Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch adds Audio Graph Card2 Yaml bindings.
It is similar to Audio Graph Card, but different.

	- audio-graph-card  used "dais"  to indicate DAI-links,
	  audio-graph-card2 uses "links" to it.

	- audio-graph-card  used "phandle" to indicate bitclock/frame-master,
	  audio-graph-card2 uses flag to it.

	- audio-graph-card  used "format" to indicate DAI format,
	  audio-graph-card2 assumes CPU/Codec drivers have .get_fmt support.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../sound/audio-graph-card2-items.yaml        | 80 +++++++++++++++++++
 .../bindings/sound/audio-graph-card2.yaml     | 51 ++++++++++++
 2 files changed, 131 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/audio-graph-card2-items.yaml
 create mode 100644 Documentation/devicetree/bindings/sound/audio-graph-card2.yaml

diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card2-items.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card2-items.yaml
new file mode 100644
index 000000000000..ec94cad6b939
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/audio-graph-card2-items.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/audio-graph-card2-items.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph Card2 Items Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+properties:
+  compatible:
+    enum:
+      - audio-graph-card2-dsp
+      - audio-graph-card2-multi
+      - audio-graph-card2-codec2codec
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^ports(@[0-1])?$":
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port(@[0-9a-f]+)?:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+    additionalProperties: true
+
+required:
+  - compatible
+
+additionalProperties: true
+
+examples:
+  - |
+    mix {
+        compatible = "audio-graph-card2-dsp";
+
+        /* sample ports
+        ports@0 {
+            port@0 { mix_fe0_ep: endpoint { remote-endpoint = <&cpu0_ep>; }; };
+            port@1 { mix_fe1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; };
+        };
+        ports@1 {
+            port@0 { mix_be0_ep: endpoint { remote-endpoint = <&codec0_ep>; }; };
+        };
+        */
+    };
+
+    multi {
+        compatible = "audio-graph-card2-multi";
+
+        /* sample ports
+        ports@0 {
+            port@0 { multi_00_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; };
+            port@1 { multi_01_ep: endpoint { remote-endpoint = <&cpu3_ep>; }; };
+        };
+        ports@1 {
+            port@0 { multi_10_ep: endpoint { remote-endpoint = <&codec1_ep>; }; };
+            port@1 { multi_11_ep: endpoint { remote-endpoint = <&codec2_ep>; }; };
+        };
+        */
+    };
+
+    codec2codec {
+        compatible = "audio-graph-card2-codec2codec";
+
+        /* sample ports
+        rate = <48000>;
+        ports {
+            port@0 { c2c_0_ep: endpoint { remote-endpoint = <&codec3_ep>; }; };
+            port@1 { c2c_1_ep: endpoint { remote-endpoint = <&codec4_ep>; }; };
+        };
+        */
+    };
diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml
new file mode 100644
index 000000000000..4975f88de025
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/audio-graph-card2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph Card2 Device Tree Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+properties:
+  compatible:
+    enum:
+      - audio-graph-card2
+  links:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+  label:
+    maxItems: 1
+  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
+
+required:
+  - compatible
+  - links
+
+additionalProperties: false
+
+examples:
+  - |
+    sound {
+        compatible = "audio-graph-card2";
+
+        links = <&cpu_port>;
+    };
+
+    cpu {
+        compatible = "cpu-driver";
+
+        cpu_port: port { cpu_ep: endpoint { remote-endpoint = <&codec_ep>; }; };
+    };
+
+    codec {
+        compatible = "codec-driver";
+
+        port { codec_ep: endpoint { remote-endpoint = <&cpu_ep>; }; };
+    };
-- 
2.25.1