dt-bindings: power: syscon-reboot: Convert bindings to json-schema

Generic SYSCON mapped register reset driver

This is a generic reset driver using syscon to map the reset register.

The reset is generally performed with a write to the reset register

defined by the register map pointed by syscon reference plus the offset

with the value and mask defined in the reboot node.

Required properties:

- compatible: should contain "syscon-reboot"

- regmap: this is phandle to the register map node

- offset: offset in the register map for the reboot register (in bytes)

- value: the reset value written to the reboot register (32 bit access)

Optional properties:

- mask: update only the register bits defined by the mask (32 bit)

Legacy usage:

If a node doesn't contain a value property but contains a mask property, the

mask property is used as the value.

Default will be little endian mode, 32 bit access only.

Examples:

	reboot {

	   compatible = "syscon-reboot";

	   regmap = <&regmapnode>;

	   offset = <0x0>;

	   mask = <0x1>;

	};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/power/reset/syscon-reboot.yaml#

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

title: Generic SYSCON mapped register reset driver

maintainers:

  - Sebastian Reichel <sre@kernel.org>

description: |+

  This is a generic reset driver using syscon to map the reset register.

  The reset is generally performed with a write to the reset register

  defined by the register map pointed by syscon reference plus the offset

  with the value and mask defined in the reboot node.

  Default will be little endian mode, 32 bit access only.

properties:

  compatible:

    const: syscon-reboot

  mask:

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

    description: Update only the register bits defined by the mask (32 bit).

  offset:

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

    description: Offset in the register map for the reboot register (in bytes).

  regmap:

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

    description: Phandle to the register map node.

  value:

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

    description: The reset value written to the reboot register (32 bit access).

required:

  - compatible

  - regmap

  - offset

allOf:

  - if:

      not:

        required:

          - mask

    then:

      required:

        - value

examples:

  - |

    reboot {

      compatible = "syscon-reboot";

      regmap = <&regmapnode>;

      offset = <0x0>;

      mask = <0x1>;

    };