xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/reset/intel,rcu-gw.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: System Reset Controller on Intel Gateway SoCs

maintainers:
  - Dilip Kota <eswara.kota@linux.intel.com>

properties:
  compatible:
    enum:
      - intel,rcu-lgm
      - intel,rcu-xrx200

  reg:
    description: Reset controller registers.
    maxItems: 1

  intel,global-reset:
    description: Global reset register offset and bit offset.
    $ref: /schemas/types.yaml#/definitions/uint32-array
    items:
      - description: Register offset
      - description: Register bit offset
        minimum: 0
        maximum: 31

  "#reset-cells":
    minimum: 2
    maximum: 3
    description: |
      First cell is reset request register offset.
      Second cell is bit offset in reset request register.
      Third cell is bit offset in reset status register.
      For LGM SoC, reset cell count is 2 as bit offset in
      reset request and reset status registers is same. Whereas
      3 for legacy SoCs as bit offset differs.

required:
  - compatible
  - reg
  - intel,global-reset
  - "#reset-cells"

additionalProperties: false

examples:
  - |
    rcu0: reset-controller@e0000000 {
        compatible = "intel,rcu-lgm";
        reg = <0xe0000000 0x20000>;
        intel,global-reset = <0x10 30>;
        #reset-cells = <2>;
    };

    pwm: pwm@e0d00000 {
        status = "disabled";
        compatible = "intel,lgm-pwm";
        reg = <0xe0d00000 0x30>;
        clocks = <&cgu0 1>;
        #pwm-cells = <2>;
        resets = <&rcu0 0x30 21>;
    };