dt-bindings: mmc: sdhci-of-dwcmhsc: Convert to yaml file

* Synopsys DesignWare Cores Mobile Storage Host Controller

Required properties:

- compatible: should be one of the following:

    "snps,dwcmshc-sdhci"

- reg: offset and length of the register set for the device.

- interrupts: a single interrupt specifier.

- clocks: Array of clocks required for SDHCI; requires at least one for

    core clock.

- clock-names: Array of names corresponding to clocks property; shall be

    "core" for core clock and "bus" for optional bus clock.

Example:

	sdhci2: sdhci@aa0000 {

		compatible = "snps,dwcmshc-sdhci";

		reg = <0xaa0000 0x1000>;

		interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&emmcclk>;

		bus-width = <8>;

	}

# SPDX-License-Identifier: GPL-2.0-only

%YAML 1.2

---

$id: http://devicetree.org/schemas/mmc/snps,dwcmshc-sdhci.yaml#

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

title: Synopsys Designware Mobile Storage Host Controller Binding

maintainers:

  - Ulf Hansson <ulf.hansson@linaro.org>

  - Jisheng Zhang <Jisheng.Zhang@synaptics.com>

allOf:

  - $ref: mmc-controller.yaml#

properties:

  compatible:

    enum:

      - snps,dwcmshc-sdhci

  reg:

    minItems: 1

    items:

      - description: Offset and length of the register set for the device

  interrupts:

    maxItems: 1

  clocks:

    minItems: 1

    items:

      - description: core clock

      - description: bus clock for optional

  clock-names:

    minItems: 1

    items:

      - const: core

      - const: bus

required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names

unevaluatedProperties: false

examples:

  - |

    mmc@aa0000 {

      compatible = "snps,dwcmshc-sdhci";

      reg = <0xaa000 0x1000>;

      interrupts = <0 25 0x4>;

      clocks = <&cru 17>, <&cru 18>;

      clock-names = "core", "bus";

      bus-width = <8>;

      #address-cells = <1>;

      #size-cells = <0>;

    };

...