Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/interrupt-controller/mediatek,mtk-cirq.yaml
Extension
.yaml
Size
1919 bytes
Lines
68
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/mediatek,mtk-cirq.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MediaTek System Interrupt Controller

maintainers:
  - Youlin Pei <youlin.pei@mediatek.com>

description:
  In MediaTek SoCs, the CIRQ is a low power interrupt controller designed to
  work outside of MCUSYS which comprises with Cortex-Ax cores, CCI and GIC.
  The external interrupts (outside MCUSYS) will feed through CIRQ and connect
  to GIC in MCUSYS. When CIRQ is enabled, it will record the edge-sensitive
  interrupts and generate a pulse signal to parent interrupt controller when
  flush command is executed. With CIRQ, MCUSYS can be completely turned off
  to improve the system power consumption without losing interrupts.

properties:
  compatible:
    items:
      - enum:
          - mediatek,mt2701-cirq
          - mediatek,mt8135-cirq
          - mediatek,mt8173-cirq
          - mediatek,mt8192-cirq
      - const: mediatek,mtk-cirq

  reg:
    maxItems: 1

  '#interrupt-cells':
    const: 3

  interrupt-controller: true

  mediatek,ext-irq-range:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    items:
      - description: First CIRQ interrupt
      - description: Last CIRQ interrupt
    description:
      Identifies the range of external interrupts in different SoCs

required:
  - compatible
  - reg
  - '#interrupt-cells'
  - interrupt-controller
  - mediatek,ext-irq-range

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>

    cirq: interrupt-controller@10204000 {
        compatible = "mediatek,mt2701-cirq", "mediatek,mtk-cirq";
        reg = <0x10204000 0x400>;
        #interrupt-cells = <3>;
        interrupt-controller;
        interrupt-parent = <&sysirq>;
        mediatek,ext-irq-range = <32 200>;
    };

Annotation

Implementation Notes