ASoC: dt-bindings: Convert Bluetooth SCO Link binding to a schema

Bluetooth SCO Link are supported by Linux with a matching device tree
binding.

Now that we have the DT validation in place, let's convert the device
tree bindings for that driver over to a YAML schema.

Cc: alsa-devel@alsa-project.org
Cc: devicetree@vger.kernel.org
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210901091852.479202-3-maxime@cerno.tech
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml b/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml
new file mode 100644
index 000000000000..e3a1f485f664
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/linux,bt-sco.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/linux,bt-sco.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bluetooth SCO Audio Codec Device Tree Bindings
+
+maintainers:
+  - Mark Brown <broonie@kernel.org>
+
+properties:
+  '#sound-dai-cells':
+    enum:
+      - 0
+
+      # For Wideband PCM
+      - 1
+
+  compatible:
+    enum:
+      - delta,dfbmcs320
+      - linux,bt-sco
+
+required:
+  - '#sound-dai-cells'
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    codec {
+        #sound-dai-cells = <0>;
+        compatible = "linux,bt-sco";
+    };
+
+...