dt-bindings: clocks: Convert Allwinner DE2 clocks to a schema

The newer Allwinner SoCs have a DE2 clocks controller that is supported in
Linux, with a matching Device Tree binding.

Now that we have the DT validation in place, let's convert the device tree
bindings for that controller over to a YAML schemas.
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Documentation/devicetree/bindings/clock/allwinner,sun8i-a83t-de2-clk.yaml

+# SPDX-License-Identifier: GPL-2.0+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/allwinner,sun8i-a83t-de2-clk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A83t Display Engine 2/3 Clock Controller Device Tree Bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <mripard@kernel.org>
+
+properties:
+  "#clock-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  compatible:
+    oneOf:
+      - const: allwinner,sun8i-a83t-de2-clk
+      - const: allwinner,sun8i-h3-de2-clk
+      - const: allwinner,sun8i-v3s-de2-clk
+      - const: allwinner,sun50i-a64-de2-clk
+      - const: allwinner,sun50i-h5-de2-clk
+      - const: allwinner,sun50i-h6-de2-clk
+      - items:
+          - const: allwinner,sun8i-r40-de2-clk
+          - const: allwinner,sun8i-h3-de2-clk
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Bus Clock
+      - description: Module Clock
+
+  clock-names:
+    items:
+      - const: bus
+      - const: mod
+
+  resets:
+    maxItems: 1
+
+required:
+  - "#clock-cells"
+  - "#reset-cells"
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sun8i-h3-ccu.h>
+    #include <dt-bindings/reset/sun8i-h3-ccu.h>
+
+    de2_clocks: clock@1000000 {
+        compatible = "allwinner,sun8i-h3-de2-clk";
+        reg = <0x01000000 0x100000>;
+        clocks = <&ccu CLK_BUS_DE>,
+                 <&ccu CLK_DE>;
+        clock-names = "bus",
+                      "mod";
+        resets = <&ccu RST_BUS_DE>;
+        #clock-cells = <1>;
+        #reset-cells = <1>;
+    };
+
+...

Documentation/devicetree/bindings/clock/sun8i-de2.txt

-Allwinner Display Engine 2.0/3.0 Clock Control Binding
-------------------------------------------------------
-
-Required properties :
-- compatible: must contain one of the following compatibles:
-		- "allwinner,sun8i-a83t-de2-clk"
-		- "allwinner,sun8i-h3-de2-clk"
-		- "allwinner,sun8i-v3s-de2-clk"
-		- "allwinner,sun50i-a64-de2-clk"
-		- "allwinner,sun50i-h5-de2-clk"
-		- "allwinner,sun50i-h6-de3-clk"
-
-- reg: Must contain the registers base address and length
-- clocks: phandle to the clocks feeding the display engine subsystem.
-	  Three are needed:
-  - "mod": the display engine module clock (on A83T it's the DE PLL)
-  - "bus": the bus clock for the whole display engine subsystem
-- clock-names: Must contain the clock names described just above
-- resets: phandle to the reset control for the display engine subsystem.
-- #clock-cells : must contain 1
-- #reset-cells : must contain 1
-
-Example:
-de2_clocks: clock@1000000 {
-	compatible = "allwinner,sun8i-h3-de2-clk";
-	reg = <0x01000000 0x100000>;
-	clocks = <&ccu CLK_BUS_DE>,
-		 <&ccu CLK_DE>;
-	clock-names = "bus",
-		      "mod";
-	resets = <&ccu RST_BUS_DE>;
-	#clock-cells = <1>;
-	#reset-cells = <1>;
-};