dt-bindings: clock: amlogic: convert amlogic,gxbb-aoclkc.txt to dt-schema

Convert the Amlogic Always-On Clock Controller bindings to dt-schema.

[jbrunet: Fixed whitespace checkpatch warning]
Signed-off-by: Neil Armstrong <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jerome Brunet <[e-mail]>

Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt

···
-* Amlogic GXBB AO Clock and Reset Unit
-
-The Amlogic GXBB AO clock controller generates and supplies clock to various
-controllers within the Always-On part of the SoC.
-
-Required Properties:
-
-- compatible: value should be different for each SoC family as :
-	- GXBB (S905) : "amlogic,meson-gxbb-aoclkc"
-	- GXL (S905X, S905D) : "amlogic,meson-gxl-aoclkc"
-	- GXM (S912) : "amlogic,meson-gxm-aoclkc"
-	- AXG (A113D, A113X) : "amlogic,meson-axg-aoclkc"
-	- G12A (S905X2, S905D2, S905Y2) : "amlogic,meson-g12a-aoclkc"
-	followed by the common "amlogic,meson-gx-aoclkc"
-- clocks: list of clock phandle, one for each entry clock-names.
-- clock-names: should contain the following:
-  * "xtal"     : the platform xtal
-  * "mpeg-clk" : the main clock controller mother clock (aka clk81)
-  * "ext-32k-0"  : external 32kHz reference #0 if any (optional)
-  * "ext-32k-1"  : external 32kHz reference #1 if any (optional - gx only)
-  * "ext-32k-2"  : external 32kHz reference #2 if any (optional - gx only)
-
-- #clock-cells: should be 1.
-
-Each clock is assigned an identifier and client nodes can use this identifier
-to specify the clock which they consume. All available clocks are defined as
-preprocessor macros in the dt-bindings/clock/gxbb-aoclkc.h header and can be
-used in device tree sources.
-
-- #reset-cells: should be 1.
-
-Each reset is assigned an identifier and client nodes can use this identifier
-to specify the reset which they consume. All available resets are defined as
-preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be
-used in device tree sources.
-
-Parent node should have the following properties :
-- compatible: "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd"
-- reg: base address and size of the AO system control register space.
-
-Example: AO Clock controller node:
-
-ao_sysctrl: sys-ctrl@0 {
-	compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd";
-	reg =  <0x0 0x0 0x0 0x100>;
-
-	clkc_AO: clock-controller {
-		compatible = "amlogic,meson-gxbb-aoclkc", "amlogic,meson-gx-aoclkc";
-		#clock-cells = <1>;
-		#reset-cells = <1>;
-		clocks = <&xtal>, <&clkc CLKID_CLK81>;
-		clock-names = "xtal", "mpeg-clk";
-	};
-
-Example: UART controller node that consumes the clock and reset generated
-  by the clock controller:
-
-	uart_AO: serial@4c0 {
-		compatible = "amlogic,meson-uart";
-		reg = <0x4c0 0x14>;
-		interrupts = <0 90 1>;
-		clocks = <&clkc_AO CLKID_AO_UART1>;
-		resets = <&clkc_AO RESET_AO_UART1>;
-	};

Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/amlogic,gxbb-aoclkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Always-On Clock Controller
+
+maintainers:
+  - Neil Armstrong <[e-mail]>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - amlogic,meson-gxbb-aoclkc
+              - amlogic,meson-gxl-aoclkc
+              - amlogic,meson-gxm-aoclkc
+              - amlogic,meson-axg-aoclkc
+          - const: amlogic,meson-gx-aoclkc
+      - enum:
+          - amlogic,meson-axg-aoclkc
+          - amlogic,meson-g12a-aoclkc
+
+  clocks:
+    minItems: 2
+    maxItems: 5
+
+  clock-names:
+    minItems: 2
+    items:
+      - const: xtal
+      - const: mpeg-clk
+      - const: ext-32k-0
+      - const: ext-32k-1
+      - const: ext-32k-2
+
+  '#clock-cells':
+    const: 1
+
+  '#reset-cells':
+    const: 1
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - '#clock-cells'
+  - '#reset-cells'
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-g12a-aoclkc
+
+    then:
+      properties:
+        clocks:
+          minItems: 2
+          maxItems: 3
+
+        clock-names:
+          minItems: 2
+          maxItems: 3
+
+  - if:
+      properties:
+        compatible:
+          enum:
+            - amlogic,meson-gxl-aoclkc
+            - amlogic,meson-gxm-aoclkc
+            - amlogic,meson-axg-aoclkc
+
+    then:
+      properties:
+        clocks:
+          maxItems: 2
+
+        clock-names:
+          maxItems: 2
+
+additionalProperties: false