dt-bindings: clocks: at91sam9x5-sckc: convert to yaml

Device Tree Clock bindings for arch-at91

This binding uses the common clock binding[1].

[1] Documentation/devicetree/bindings/clock/clock-bindings.txt

Slow Clock controller:

Required properties:

- compatible : shall be one of the following:

	"atmel,at91sam9x5-sckc",

	"atmel,sama5d3-sckc",

	"atmel,sama5d4-sckc" or

	"microchip,sam9x60-sckc":

		at91 SCKC (Slow Clock Controller)

- #clock-cells : shall be 1 for "microchip,sam9x60-sckc" otherwise shall be 0.

- clocks : shall be the input parent clock phandle for the clock.

Optional properties:

- atmel,osc-bypass : boolean property. Set this when a clock signal is directly

  provided on XIN.

For example:

	sckc@fffffe50 {

		compatible = "atmel,at91sam9x5-sckc";

		reg = <0xfffffe50 0x4>;

		clocks = <&slow_xtal>;

		#clock-cells = <0>;

	};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/atmel,at91sam9x5-sckc.yaml#

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

title: Atmel Slow Clock Controller (SCKC)

maintainers:

  - Claudiu Beznea <claudiu.beznea@microchip.com>

properties:

  compatible:

    oneOf:

      - enum:

          - atmel,at91sam9x5-sckc

          - atmel,sama5d3-sckc

          - atmel,sama5d4-sckc

          - microchip,sam9x60-sckc

      - items:

          - const: microchip,sama7g5-sckc

          - const: microchip,sam9x60-sckc

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  "#clock-cells":

    enum: [0, 1]

  atmel,osc-bypass:

    type: boolean

    description: set when a clock signal is directly provided on XIN

required:

  - compatible

  - reg

  - clocks

  - "#clock-cells"

allOf:

  - if:

      properties:

        compatible:

          contains:

            enum:

              - microchip,sam9x60-sckc

    then:

      properties:

        "#clock-cells":

          const: 1

    else:

      properties:

        "#clock-cells":

          const: 0

additionalProperties: false

examples:

  - |

    clk32k: clock-controller@fffffe50 {

        compatible = "microchip,sam9x60-sckc";

        reg = <0xfffffe50 0x4>;

        clocks = <&slow_xtal>;

        #clock-cells = <1>;

    };

...