dt-bindings: clock: Convert fixed-factor-clock to json-schema

Binding for simple fixed factor rate clock sources.

This binding uses the common clock binding[1].

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

Required properties:

- compatible : shall be "fixed-factor-clock".

- #clock-cells : from common clock binding; shall be set to 0.

- clock-div: fixed divider.

- clock-mult: fixed multiplier.

- clocks: parent clock.

Optional properties:

- clock-output-names : From common clock binding.

Some clocks that require special treatments are also handled by that

driver, with the compatibles:

  - allwinner,sun4i-a10-pll3-2x-clk

Example:

	clock {

		compatible = "fixed-factor-clock";

		clocks = <&parentclk>;

		#clock-cells = <0>;

		clock-div = <2>;

		clock-mult = <1>;

	};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/fixed-factor-clock.yaml#

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

title: Binding for simple fixed factor rate clock sources

maintainers:

  - Michael Turquette <mturquette@baylibre.com>

  - Stephen Boyd <sboyd@kernel.org>

properties:

  compatible:

    enum:

      - allwinner,sun4i-a10-pll3-2x-clk

      - fixed-factor-clock

  "#clock-cells":

    const: 0

  clocks:

    maxItems: 1

  clock-div:

    description: Fixed divider

    allOf:

      - $ref: /schemas/types.yaml#/definitions/uint32

      - minimum: 1

  clock-mult:

    description: Fixed multiplier

    $ref: /schemas/types.yaml#/definitions/uint32

  clock-output-names:

    maxItems: 1

required:

  - compatible

  - clocks

  - "#clock-cells"

  - clock-div

  - clock-mult

additionalProperties: false

examples:

  - |

    clock {

      compatible = "fixed-factor-clock";

      clocks = <&parentclk>;

      #clock-cells = <0>;

      clock-div = <2>;

      clock-mult = <1>;

    };

...