dt-bindings: rtc: at91rm9200: convert bindings to json-schema

Atmel AT91RM9200 Real Time Clock

Required properties:

- compatible: should be: "atmel,at91rm9200-rtc", "atmel,at91sam9x5-rtc" or

  "microchip,sam9x60-rtc"

- reg: physical base address of the controller and length of memory mapped

  region.

- interrupts: rtc alarm/event interrupt

- clocks: phandle to input clock.

Example:

rtc@fffffe00 {

	compatible = "atmel,at91rm9200-rtc";

	reg = <0xfffffe00 0x100>;

	interrupts = <1 4 7>;

	clocks = <&clk32k>;

};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/rtc/atmel,at91rm9200-rtc.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Atmel AT91 RTC Device Tree Bindings

allOf:

  - $ref: "rtc.yaml#"

maintainers:

  - Alexandre Belloni <alexandre.belloni@bootlin.com>

properties:

  compatible:

    enum:

      - atmel,at91rm9200-rtc

      - atmel,at91sam9x5-rtc

      - microchip,sam9x60-rtc

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

required:

  - compatible

  - reg

  - interrupts

additionalProperties: false

examples:

  - |

    rtc@fffffe00 {

        compatible = "atmel,at91rm9200-rtc";

        reg = <0xfffffe00 0x100>;

        interrupts = <1 4 7>;

        clocks = <&clk32k>;

    };

...