Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/arm,versatile-fpga-irq.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: ARM Versatile FPGA IRQ Controller

maintainers:
  - Linus Walleij <linusw@kernel.org>

description:
  One or more FPGA IRQ controllers can be synthesized in an ARM reference board
  such as the Integrator or Versatile family. The output of these different
  controllers are OR:ed together and fed to the CPU tile's IRQ input. Each
  instance can handle up to 32 interrupts.

properties:
  compatible:
    const: arm,versatile-fpga-irq

  interrupt-controller: true

  '#interrupt-cells':
    const: 1

  reg:
    maxItems: 1

  clear-mask:
    description: A mask written to clear all IRQs on the controller at boot.
    $ref: /schemas/types.yaml#/definitions/uint32

  valid-mask:
    description:
      A bit mask determining which interrupts are valid; unused lines are set to 0.
    $ref: /schemas/types.yaml#/definitions/uint32

  interrupts:
    maxItems: 1

additionalProperties: false

required:
  - compatible
  - interrupt-controller
  - '#interrupt-cells'
  - reg
  - clear-mask
  - valid-mask

examples:
  - |
    interrupt-controller@14000000 {
        compatible = "arm,versatile-fpga-irq";
        #interrupt-cells = <1>;
        interrupt-controller;
        reg = <0x14000000 0x100>;
        clear-mask = <0xffffffff>;
        valid-mask = <0x003fffff>;
    };