dt-bindings: serial: Convert rda,8810pl-uart to YAML

Convert RDA Micro UART bindings to DT schema format.
Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220109170321.GA12989@standask-GA-A55M-S2HP

Documentation/devicetree/bindings/serial/rda,8810pl-uart.txt

-RDA Micro UART
-
-Required properties:
-- compatible :  "rda,8810pl-uart" for RDA8810PL SoCs.
-- reg        :  Offset and length of the register set for the device.
-- interrupts :  Should contain UART interrupt.
-- clocks     :  Phandle to the input clock.
-
-
-Example:
-
-		uart2: serial@20a90000 {
-			compatible = "rda,8810pl-uart";
-			reg = <0x20a90000 0x1000>;
-			interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&uart_clk>;
-		};

Documentation/devicetree/bindings/serial/rda,8810pl-uart.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/rda,8810pl-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RDA Micro UART Interface
+
+maintainers:
+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    const: rda,8810pl-uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    uart3: serial@20a90000 {
+      compatible = "rda,8810pl-uart";
+      reg = <0x20a90000 0x1000>;
+      interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&uart_clk>;
+    };
+...

MAINTAINERS

@@ -2503,7 +2503,7 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/arm/rda.yaml
 F:	Documentation/devicetree/bindings/gpio/gpio-rda.yaml
 F:	Documentation/devicetree/bindings/interrupt-controller/rda,8810pl-intc.txt
-F:	Documentation/devicetree/bindings/serial/rda,8810pl-uart.txt
+F:	Documentation/devicetree/bindings/serial/rda,8810pl-uart.yaml
 F:	Documentation/devicetree/bindings/timer/rda,8810pl-timer.txt
 F:	arch/arm/boot/dts/rda8810pl-*
 F:	drivers/clocksource/timer-rda.c