dt-bindings: reset: amlogic,meson-axg-audio-arb: Convert to yaml

Convert the device tree bindings for the Amlogic audio memory arbiter
controller to YAML schema to allow participating in DT validation.

Signed-off-by: Philipp Zabel <[e-mail]>
Cc: Kevin Hilman <[e-mail]>
Cc: Jerome Brunet <[e-mail]>
Cc: Martin Blumenstingl <[e-mail]>
Reviewed-by: Martin Blumenstingl <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/reset/amlogic,meson-axg-audio-arb.txt

···
-* Amlogic audio memory arbiter controller
-
-The Amlogic Audio ARB is a simple device which enables or
-disables the access of Audio FIFOs to DDR on AXG based SoC.
-
-Required properties:
-- compatible: 'amlogic,meson-axg-audio-arb' or
-	      'amlogic,meson-sm1-audio-arb'
-- reg: physical base address of the controller and length of memory
-       mapped region.
-- clocks: phandle to the fifo peripheral clock provided by the audio
-	  clock controller.
-- #reset-cells: must be 1.
-
-Example on the A113 SoC:
-
-arb: reset-controller@280 {
-	compatible = "amlogic,meson-axg-audio-arb";
-	reg = <0x0 0x280 0x0 0x4>;
-	#reset-cells = <1>;
-	clocks = <&clkc_audio AUD_CLKID_DDR_ARB>;
-};

Documentation/devicetree/bindings/reset/amlogic,meson-axg-audio-arb.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 BayLibre, SAS
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/amlogic,meson-axg-audio-arb.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic audio memory arbiter controller
+
+maintainers:
+  - Jerome Brunet <[e-mail]>
+
+description: The Amlogic Audio ARB is a simple device which enables or disables
+  the access of Audio FIFOs to DDR on AXG based SoC.
+
+properties:
+  compatible:
+    enum:
+      - amlogic,meson-axg-audio-arb
+      - amlogic,meson-sm1-audio-arb
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+    description: |
+      phandle to the fifo peripheral clock provided by the audio clock
+      controller.
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    // on the A113 SoC:
+    #include <dt-bindings/clock/axg-audio-clkc.h>
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        arb: reset-controller@280 {
+            compatible = "amlogic,meson-axg-audio-arb";
+            reg = <0x0 0x280 0x0 0x4>;
+            #reset-cells = <1>;
+            clocks = <&clkc_audio AUD_CLKID_DDR_ARB>;
+        };
+    };