ASoC: dt-bindings: davinci-mcbsp: convert McBSP bindings to yaml schema

Convert the binding for McBSP controllers for TI SoCs from txt
to YAML schema.

Add properties 'clocks', 'clock-names', 'power-domains' and
'#sound-dai-cells' which were missing from the txt file.
Add '#sound-dai-cells' and 'clocks' in the example which were missing
from the txt file.
Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://msgid.link/r/20240402071213.11671-2-bastien.curutchet@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/davinci-mcbsp.txt

-Texas Instruments DaVinci McBSP module
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-This binding describes the "Multi-channel Buffered Serial Port" (McBSP)
-audio interface found in some TI DaVinci processors like the OMAP-L138 or AM180x.
-
-
-Required properties:
-~~~~~~~~~~~~~~~~~~~~
-- compatible :
-        "ti,da850-mcbsp" : for DA850, AM180x and OPAM-L138 platforms
-
-- reg : physical base address and length of the controller memory mapped
-        region(s).
-- reg-names : Should contain:
-        * "mpu" for the main registers (required).
-        * "dat" for the data FIFO (optional).
-
-- dmas: three element list of DMA controller phandles, DMA request line and
-	TC channel ordered triplets.
-- dma-names: identifier string for each DMA request line in the dmas property.
-	These strings correspond 1:1 with the ordered pairs in dmas. The dma
-	identifiers must be "rx" and "tx".
-
-Optional properties:
-~~~~~~~~~~~~~~~~~~~~
-- interrupts : Interrupt numbers for McBSP
-- interrupt-names : Known interrupt names are "rx" and "tx"
-
-- pinctrl-0: Should specify pin control group used for this controller.
-- pinctrl-names: Should contain only one value - "default", for more details
-        please refer to pinctrl-bindings.txt
-
-Example (AM1808):
-~~~~~~~~~~~~~~~~~
-
-mcbsp0: mcbsp@1d10000 {
-	compatible = "ti,da850-mcbsp";
-	pinctrl-names = "default";
-	pinctrl-0 = <&mcbsp0_pins>;
-
-	reg = 	<0x00110000 0x1000>,
-		<0x00310000 0x1000>;
-	reg-names = "mpu", "dat";
-	interrupts = <97 98>;
-	interrupt-names = "rx", "tx";
-	dmas = <&edma0 3 1
-		&edma0 2 1>;
-	dma-names = "tx", "rx";
-};

Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/davinci-mcbsp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: McBSP Controller for TI SoCs
+
+maintainers:
+  - Bastien Curutchet <bastien.curutchet@bootlin.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,da850-mcbsp
+
+  reg:
+    minItems: 1
+    items:
+      - description: CFG registers
+      - description: data registers
+
+  reg-names:
+    minItems: 1
+    items:
+      - const: mpu
+      - const: dat
+
+  dmas:
+    items:
+      - description: transmission DMA channel
+      - description: reception DMA channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  interrupts:
+    items:
+      - description: RX interrupt
+      - description: TX interrupt
+
+  interrupt-names:
+    items:
+      - const: rx
+      - const: tx
+
+  clocks:
+    items:
+      - description: functional clock
+
+  clock-names:
+    items:
+      - const: fck
+
+  power-domains:
+    maxItems: 1
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - "#sound-dai-cells"
+  - compatible
+  - reg
+  - reg-names
+  - dmas
+  - dma-names
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mcbsp0@1d10000 {
+      #sound-dai-cells = <0>;
+      compatible = "ti,da850-mcbsp";
+      pinctrl-names = "default";
+      pinctrl-0 = <&mcbsp0_pins>;
+
+      reg = <0x111000 0x1000>,
+            <0x311000 0x1000>;
+      reg-names = "mpu", "dat";
+      interrupts = <97>, <98>;
+      interrupt-names = "rx", "tx";
+      dmas = <&edma0 3 1>,
+             <&edma0 2 1>;
+      dma-names = "tx", "rx";
+
+      clocks = <&psc1 14>;
+    };