Commit 6248d8cc authored by Rob Herring (Arm)'s avatar Rob Herring (Arm)
Browse files

dt-bindings: interrupt-controller: Convert ti,omap4-wugen-mpu to DT schema

Convert the TI Wakeup Generator interrupt controller binding to schema
format. It's a straight-forward conversion of the typical interrupt
controller.

Link: https://lore.kernel.org/r/20250505144913.1293967-1-robh@kernel.org


Signed-off-by: default avatarRob Herring (Arm) <robh@kernel.org>
parent 94555704
Loading
Loading
Loading
Loading
+0 −31
Original line number Diff line number Diff line
TI OMAP4 Wake-up Generator

All TI OMAP4/5 (and their derivatives) an interrupt controller that
routes interrupts to the GIC, and also serves as a wakeup source. It
is also referred to as "WUGEN-MPU", hence the name of the binding.

Required properties:

- compatible : should contain at least "ti,omap4-wugen-mpu" or
  "ti,omap5-wugen-mpu"
- reg : Specifies base physical address and size of the registers.
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an
  interrupt source. The value must be 3.

Notes:

- Because this HW ultimately routes interrupts to the GIC, the
  interrupt specifier must be that of the GIC.
- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
  are explicitly forbidden.

Example:

       wakeupgen: interrupt-controller@48281000 {
               compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
               interrupt-controller;
               #interrupt-cells = <3>;
               reg = <0x48281000 0x1000>;
               interrupt-parent = <&gic>;
       };
+55 −0
Original line number Diff line number Diff line
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/ti,omap4-wugen-mpu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: TI OMAP4 Wake-up Generator

maintainers:
  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

description: >
  All TI OMAP4/5 (and their derivatives) are interrupt controllers that route
  interrupts to the GIC, and also serve as wakeup sources. They are also
  referred to as "WUGEN-MPU", hence the name of the binding.

  Notes:

    - Because this HW ultimately routes interrupts to the GIC, the interrupt
      specifier must be that of the GIC.
    - Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs are
      explicitly forbidden.

properties:
  compatible:
    oneOf:
      - items:
          - const: ti,omap5-wugen-mpu
          - const: ti,omap4-wugen-mpu
      - const: ti,omap4-wugen-mpu

  reg:
    maxItems: 1

  interrupt-controller: true

  '#interrupt-cells':
    const: 3

required:
  - compatible
  - reg
  - interrupt-controller
  - '#interrupt-cells'

additionalProperties: false

examples:
  - |
    interrupt-controller@48281000 {
        compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
        reg = <0x48281000 0x1000>;
        interrupt-controller;
        #interrupt-cells = <3>;
    };