Documentation/devicetree/bindings/dma/dma-router.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dma/dma-router.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/dma/dma-router.yaml
Extension
.yaml
Size
977 bytes
Lines
44
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.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/dma-router.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: DMA Router Common Properties

maintainers:
  - Vinod Koul <vkoul@kernel.org>

allOf:
  - $ref: dma-common.yaml#

description:
  DMA routers are transparent IP blocks used to route DMA request
  lines from devices to the DMA controller. Some SoCs (like TI DRA7x)
  have more peripherals integrated with DMA requests than what the DMA
  controller can handle directly.

properties:
  $nodename:
    pattern: "^dma-router(@.*)?$"

  dma-masters:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      maxItems: 1
    description:
      Array of phandles to the DMA controllers the router can direct
      the signal to.

  dma-requests:
    description:
      Number of incoming request lines the router can handle.

required:
  - "#dma-cells"
  - dma-masters

additionalProperties: true

...

Annotation

Implementation Notes