dt-bindings: reset: Convert i.MX reset to json-schema

Freescale i.MX System Reset Controller

======================================

Please also refer to reset.txt in this directory for common reset

controller binding usage.

Required properties:

- compatible: Should be "fsl,<chip>-src"

- reg: should be register base and length as documented in the

  datasheet

- interrupts: Should contain SRC interrupt and CPU WDOG interrupt,

  in this order.

- #reset-cells: 1, see below

example:

src: src@20d8000 {

        compatible = "fsl,imx6q-src";

        reg = <0x020d8000 0x4000>;

        interrupts = <0 91 0x04 0 96 0x04>;

        #reset-cells = <1>;

};

Specifying reset lines connected to IP modules

==============================================

The system reset controller can be used to reset the GPU, VPU,

IPU, and OpenVG IP modules on i.MX5 and i.MX6 ICs. Those device

nodes should specify the reset line on the SRC in their resets

property, containing a phandle to the SRC device node and a

RESET_INDEX specifying which module to reset, as described in

reset.txt

example:

        ipu1: ipu@2400000 {

                resets = <&src 2>;

        };

        ipu2: ipu@2800000 {

                resets = <&src 4>;

        };

The following RESET_INDEX values are valid for i.MX5:

GPU_RESET     0

VPU_RESET     1

IPU1_RESET    2

OPEN_VG_RESET 3

The following additional RESET_INDEX value is valid for i.MX6:

IPU2_RESET    4

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/reset/fsl,imx-src.yaml#

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

title: Freescale i.MX System Reset Controller

maintainers:

  - Philipp Zabel <p.zabel@pengutronix.de>

description: |

  The system reset controller can be used to reset the GPU, VPU,

  IPU, and OpenVG IP modules on i.MX5 and i.MX6 ICs. Those device

  nodes should specify the reset line on the SRC in their resets

  property, containing a phandle to the SRC device node and a

  RESET_INDEX specifying which module to reset, as described in

  reset.txt

  The following RESET_INDEX values are valid for i.MX5:

    GPU_RESET     0

    VPU_RESET     1

    IPU1_RESET    2

    OPEN_VG_RESET 3

  The following additional RESET_INDEX value is valid for i.MX6:

    IPU2_RESET    4

properties:

  compatible:

    oneOf:

      - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx50-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx53-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx6q-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx6sx-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx6sl-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx6ul-src"

          - const: "fsl,imx51-src"

      - items:

          - const: "fsl,imx6sll-src"

          - const: "fsl,imx51-src"

  reg:

    maxItems: 1

  interrupts:

    items:

      - description: SRC interrupt

      - description: CPU WDOG interrupts out of SRC

    minItems: 1

    maxItems: 2

  '#reset-cells':

    const: 1

required:

  - compatible

  - reg

  - interrupts

  - '#reset-cells'

additionalProperties: false

examples:

  - |

    reset-controller@73fd0000 {

        compatible = "fsl,imx51-src";

        reg = <0x73fd0000 0x4000>;

        interrupts = <75>;

        #reset-cells = <1>;

    };