xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Marvell Global Timer (GTI) system watchdog

maintainers:
  - Bharat Bhushan <bbhushan2@marvell.com>

allOf:
  - $ref: watchdog.yaml#

properties:
  compatible:
    oneOf:
      - enum:
          - marvell,cn9670-wdt
          - marvell,cn10624-wdt

      - items:
          - enum:
              - marvell,cn9880-wdt
              - marvell,cnf9535-wdt
          - const: marvell,cn9670-wdt

      - items:
          - enum:
              - marvell,cn10308-wdt
              - marvell,cnf10518-wdt
          - const: marvell,cn10624-wdt

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    items:
      - const: refclk

  marvell,wdt-timer-index:
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 63
    description:
      An SoC have many timers (up to 64), firmware can reserve one or more timer
      for some other use case and configures one of the global timer as watchdog
      timer. Firmware will update this field with the timer number configured
      as watchdog timer.

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        watchdog@802000040000 {
            compatible = "marvell,cn9670-wdt";
            reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
            interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
            clocks = <&sclk>;
            clock-names = "refclk";
            marvell,wdt-timer-index = <63>;
        };
    };

...