dt-bindings: media: meson-ao-cec: convert to yaml

Now that we have the DT validation in place, let's convert the device tree
bindings for the Amlogic AO-CEC controller over to a YAML schemas.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/media/amlogic,meson-gx-ao-cec.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 BayLibre, SAS
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/media/amlogic,meson-gx-ao-cec.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic Meson AO-CEC Controller
+
+maintainers:
+  - Neil Armstrong <narmstrong@baylibre.com>
+
+description: |
+  The Amlogic Meson AO-CEC module is present is Amlogic SoCs and its purpose is
+  to handle communication between HDMI connected devices over the CEC bus.
+
+properties:
+  compatible:
+    enum:
+      - amlogic,meson-gx-ao-cec # GXBB, GXL, GXM, G12A and SM1 AO_CEC_A module
+      - amlogic,meson-g12a-ao-cec # G12A AO_CEC_B module
+      - amlogic,meson-sm1-ao-cec # SM1 AO_CEC_B module
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  hdmi-phandle:
+    description: phandle to the HDMI controller
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-gx-ao-cec
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: AO-CEC clock
+
+        clock-names:
+          maxItems: 1
+          items:
+            - const: core
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-g12a-ao-cec
+              - amlogic,meson-sm1-ao-cec
+
+    then:
+      properties:
+        clocks:
+          items:
+            - description: AO-CEC clock generator source
+
+        clock-names:
+          maxItems: 1
+          items:
+            - const: oscin
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - hdmi-phandle
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    cec_AO: cec@100 {
+        compatible = "amlogic,meson-gx-ao-cec";
+        reg = <0x0 0x00100 0x0 0x14>;
+        interrupts = <199>;
+        clocks = <&clkc_cec>;
+        clock-names = "core";
+        hdmi-phandle = <&hdmi_tx>;
+    };
+

Documentation/devicetree/bindings/media/meson-ao-cec.txt

-* Amlogic Meson AO-CEC driver
-
-The Amlogic Meson AO-CEC module is present is Amlogic SoCs and its purpose is
-to handle communication between HDMI connected devices over the CEC bus.
-
-Required properties:
-  - compatible : value should be following depending on the SoC :
-	For GXBB, GXL, GXM, G12A and SM1 (AO_CEC_A module) :
-	"amlogic,meson-gx-ao-cec"
-	For G12A (AO_CEC_B module) :
-	"amlogic,meson-g12a-ao-cec"
-	For SM1 (AO_CEC_B module) :
-	"amlogic,meson-sm1-ao-cec"
-
-  - reg : Physical base address of the IP registers and length of memory
-	  mapped region.
-
-  - interrupts : AO-CEC interrupt number to the CPU.
-  - clocks : from common clock binding: handle to AO-CEC clock.
-  - clock-names : from common clock binding, must contain :
-		For GXBB, GXL, GXM, G12A and SM1 (AO_CEC_A module) :
-		- "core"
-		For G12A, SM1 (AO_CEC_B module) :
-		- "oscin"
-		corresponding to entry in the clocks property.
-  - hdmi-phandle: phandle to the HDMI controller
-
-Example:
-
-cec_AO: cec@100 {
-	compatible = "amlogic,meson-gx-ao-cec";
-	reg = <0x0 0x00100 0x0 0x14>;
-	interrupts = <GIC_SPI 199 IRQ_TYPE_EDGE_RISING>;
-	clocks = <&clkc_AO CLKID_AO_CEC_32K>;
-	clock-names = "core";
-	hdmi-phandle = <&hdmi_tx>;
-};