dt-bindings: memory-controllers: Convert mmdc to json-schema

Freescale Multi Mode DDR controller (MMDC)

Required properties :

- compatible : should be one of following:

	for i.MX6Q/i.MX6DL:

	- "fsl,imx6q-mmdc";

	for i.MX6QP:

	- "fsl,imx6qp-mmdc", "fsl,imx6q-mmdc";

	for i.MX6SL:

	- "fsl,imx6sl-mmdc", "fsl,imx6q-mmdc";

	for i.MX6SLL:

	- "fsl,imx6sll-mmdc", "fsl,imx6q-mmdc";

	for i.MX6SX:

	- "fsl,imx6sx-mmdc", "fsl,imx6q-mmdc";

	for i.MX6UL/i.MX6ULL/i.MX6ULZ:

	- "fsl,imx6ul-mmdc", "fsl,imx6q-mmdc";

	for i.MX7ULP:

	- "fsl,imx7ulp-mmdc", "fsl,imx6q-mmdc";

- reg : address and size of MMDC DDR controller registers

Optional properties :

- clocks : the clock provided by the SoC to access the MMDC registers

Example :

	mmdc0: memory-controller@21b0000 { /* MMDC0 */

		compatible = "fsl,imx6q-mmdc";

		reg = <0x021b0000 0x4000>;

		clocks = <&clks IMX6QDL_CLK_MMDC_P0_IPG>;

	};

	mmdc1: memory-controller@21b4000 { /* MMDC1 */

		compatible = "fsl,imx6q-mmdc";

		reg = <0x021b4000 0x4000>;

		status = "disabled";

	};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/memory-controllers/fsl/mmdc.yaml#

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

title: Freescale Multi Mode DDR controller (MMDC)

maintainers:

  - Anson Huang <Anson.Huang@nxp.com>

properties:

  compatible:

    oneOf:

      - const: fsl,imx6q-mmdc

      - items:

          - enum:

            - fsl,imx6qp-mmdc

            - fsl,imx6sl-mmdc

            - fsl,imx6sll-mmdc

            - fsl,imx6sx-mmdc

            - fsl,imx6ul-mmdc

            - fsl,imx7ulp-mmdc

          - const: fsl,imx6q-mmdc

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

required:

  - compatible

  - reg

examples:

  - |

    #include <dt-bindings/clock/imx6qdl-clock.h>

    memory-controller@21b0000 {

        compatible = "fsl,imx6q-mmdc";

        reg = <0x021b0000 0x4000>;

        clocks = <&clks IMX6QDL_CLK_MMDC_P0_IPG>;

    };

    memory-controller@21b4000 {

        compatible = "fsl,imx6q-mmdc";

        reg = <0x021b4000 0x4000>;

    };