xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/interrupt-controller/st,stih407-irq-syscfg.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/st,stih407-irq-syscfg.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: STMicroelectronics STi System Configuration Controlled IRQs

maintainers:
  - Patrice Chotard <patrice.chotard@foss.st.com>

description:
  On STi based systems; External, CTI (Core Sight), PMU (Performance
  Management), and PL310 L2 Cache IRQs are controlled using System
  Configuration registers.  This device is used to unmask them prior to use.

properties:
  compatible:
    const: st,stih407-irq-syscfg

  st,syscfg:
    description: Phandle to Cortex-A9 IRQ system config registers
    $ref: /schemas/types.yaml#/definitions/phandle

  st,irq-device:
    description: Array of IRQs to enable.
    $ref: /schemas/types.yaml#/definitions/uint32-array
    items:
      - description: Enable the IRQ of the channel one.
      - description: Enable the IRQ of the channel two.

  st,fiq-device:
    description: Array of FIQs to enable.
    $ref: /schemas/types.yaml#/definitions/uint32-array
    items:
      - description: Enable the IRQ of the channel one.
      - description: Enable the IRQ of the channel two.

  st,invert-ext:
    description: External IRQs can be inverted at will. This property inverts
      these three IRQs using bitwise logic, each one being encoded respectively
      on the first, second and fourth bit.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [ 1, 2, 3, 4, 5, 6 ]

required:
  - compatible
  - st,syscfg
  - st,irq-device
  - st,fiq-device

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq-st.h>
    irq-syscfg {
        compatible    = "st,stih407-irq-syscfg";
        st,syscfg     = <&syscfg_cpu>;
        st,irq-device = <ST_IRQ_SYSCFG_PMU_0>,
                        <ST_IRQ_SYSCFG_PMU_1>;
        st,fiq-device = <ST_IRQ_SYSCFG_DISABLED>,
                        <ST_IRQ_SYSCFG_DISABLED>;
    };
...