ASoC: dt-bindings: xlnx,i2s: Convert to json-schema

Convert the Xilinx I2S device tree binding documentation to json-schema.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://patch.msgid.link/20250226122325.2014547-2-vincenzo.frascino@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/xlnx,i2s.txt

@@ -1,28 +0,0 @@
-Device-Tree bindings for Xilinx I2S PL block
-
-The IP supports I2S based playback/capture audio
-
-Required property:
- - compatible: "xlnx,i2s-transmitter-1.0" for playback and
-	       "xlnx,i2s-receiver-1.0" for capture
-
-Required property common to both I2S playback and capture:
- - reg: Base address and size of the IP core instance.
- - xlnx,dwidth: sample data width. Can be any of 16, 24.
- - xlnx,num-channels: Number of I2S streams. Can be any of 1, 2, 3, 4.
-		      supported channels = 2 * xlnx,num-channels
-
-Example:
-
-	i2s_receiver@a0080000 {
-		compatible = "xlnx,i2s-receiver-1.0";
-		reg = <0x0 0xa0080000 0x0 0x10000>;
-		xlnx,dwidth = <0x18>;
-		xlnx,num-channels = <1>;
-	};
-	i2s_transmitter@a0090000 {
-		compatible = "xlnx,i2s-transmitter-1.0";
-		reg = <0x0 0xa0090000 0x0 0x10000>;
-		xlnx,dwidth = <0x18>;
-		xlnx,num-channels = <1>;
-	};

Documentation/devicetree/bindings/sound/xlnx,i2s.yaml

@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/xlnx,i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx I2S PL block
+
+description:
+  The IP supports I2S based playback/capture audio.
+
+maintainers:
+  - Vincenzo Frascino <vincenzo.frascino@arm.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - xlnx,i2s-receiver-1.0
+      - xlnx,i2s-transmitter-1.0
+
+  reg:
+    maxItems: 1
+
+  xlnx,dwidth:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 16
+      - 24
+    description: |
+      Sample data width.
+
+  xlnx,num-channels:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+    maximum: 4
+    description: |
+      Number of I2S streams.
+
+required:
+  - compatible
+  - reg
+  - xlnx,dwidth
+  - xlnx,num-channels
+
+additionalProperties: false
+
+examples:
+  - |
+    i2s@a0080000 {
+      compatible = "xlnx,i2s-receiver-1.0";
+      reg = <0xa0080000 0x10000>;
+      xlnx,dwidth = <0x18>;
+      xlnx,num-channels = <1>;
+    };
+    i2s@a0090000 {
+      compatible = "xlnx,i2s-transmitter-1.0";
+      reg = <0xa0090000 0x10000>;
+      xlnx,dwidth = <0x18>;
+      xlnx,num-channels = <1>;
+    };
+
+...