ASoC: dt-bindings: Definitions for DAI params

The "convert-channels" and "convert-rate" bindings are available for
audio-graph-card and are documented in the audio-graph-port.yaml and
the audio-graph.yaml. There is duplication of property details at
multiple places.

Introduce a new schema to have common definitions for DAI params and
these can be re-used in other schemas wherever applicable. Presently
update audio-graph-card bindings to use these definitions. If required
simple-card bindings can be extended to make use of common definitions.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1659936452-2254-2-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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

@@ -19,11 +19,10 @@ properties:
     description: "device name prefix"
     $ref: /schemas/types.yaml#/definitions/string
   convert-rate:
-    description: CPU to Codec rate convert.
-    $ref: /schemas/types.yaml#/definitions/uint32
+    $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-sample-rate"
   convert-channels:
-    description: CPU to Codec rate channels.
-    $ref: /schemas/types.yaml#/definitions/uint32
+    $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-channels"
+
 patternProperties:
   "^endpoint(@[0-9a-f]+)?":
     $ref: /schemas/graph.yaml#/$defs/endpoint-base
@@ -65,11 +64,9 @@ patternProperties:
             - msb
             - lsb
       convert-rate:
-        description: CPU to Codec rate convert.
-        $ref: /schemas/types.yaml#/definitions/uint32
+        $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-sample-rate"
       convert-channels:
-        description: CPU to Codec rate channels.
-        $ref: /schemas/types.yaml#/definitions/uint32
+        $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-channels"
 
       dai-tdm-slot-width-map:
         description: Mapping of sample widths to slot widths. For hardware

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

@@ -27,11 +27,10 @@ properties:
     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
+    $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-sample-rate"
   convert-channels:
-    description: CPU to Codec rate channels.
-    $ref: /schemas/types.yaml#/definitions/uint32
+    $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-channels"
+
   pa-gpios:
     maxItems: 1
   hp-det-gpio:

Documentation/devicetree/bindings/sound/dai-params.yaml

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/dai-params.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Digital Audio Interface (DAI) Stream Parameters
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+select: false
+
+$defs:
+
+  dai-channels:
+    description: Number of audio channels used by DAI
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+    maximum: 32
+
+  dai-sample-rate:
+    description: Audio sample rate used by DAI
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 8000
+    maximum: 192000
+
+properties: {}
+
+additionalProperties: true