dt-bindings: watchdog: cdns,wdt-r1p2: Convert cadence watchdog to yaml

Zynq Watchdog Device Tree Bindings

-------------------------------------------

Required properties:

- compatible		: Should be "cdns,wdt-r1p2".

- clocks		: This is pclk (APB clock).

- interrupts		: This is wd_irq - watchdog timeout interrupt.

Optional properties

- reset-on-timeout	: If this property exists, then a reset is done

			  when watchdog times out.

- timeout-sec		: Watchdog timeout value (in seconds).

Example:

	watchdog@f8005000 {

		compatible = "cdns,wdt-r1p2";

		clocks = <&clkc 45>;

		interrupt-parent = <&intc>;

		interrupts = <0 9 1>;

		reg = <0xf8005000 0x1000>;

		reset-on-timeout;

		timeout-sec = <10>;

	};

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/watchdog/cdns,wdt-r1p2.yaml#

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

title: Cadence watchdog timer controller

maintainers:

  - Neeli Srinivas <srinivas.neeli@amd.com>

description:

  The cadence watchdog timer is used to detect and recover from

  system malfunctions. This watchdog contains 24 bit counter and

  a programmable reset period. The timeout period varies from 1 ms

  to 30 seconds while using a 100Mhz clock.

allOf:

  - $ref: watchdog.yaml#

properties:

  compatible:

    enum:

      - cdns,wdt-r1p2

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  interrupts:

    maxItems: 1

  reset-on-timeout:

    type: boolean

    description: |

      If this property exists, then a reset is done when watchdog

      times out.

required:

  - compatible

  - reg

  - clocks

  - interrupts

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    watchdog@f8005000 {

        compatible = "cdns,wdt-r1p2";

        reg = <0xf8005000 0x1000>;

        clocks = <&clkc 45>;

        interrupt-parent = <&intc>;

        interrupts = <GIC_SPI 9 IRQ_TYPE_EDGE_RISING>;

        reset-on-timeout;

        timeout-sec = <10>;

    };

...