Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
Extension: .yaml
Size: 1879 bytes
Lines: 103
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.

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

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/allwinner,sun50i-a64-dma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A64 DMA Controller

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Maxime Ripard <mripard@kernel.org>

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

properties:
  "#dma-cells":
    const: 1
    description: The cell is the request line number.

  compatible:
    oneOf:
      - enum:
          - allwinner,sun20i-d1-dma
          - allwinner,sun50i-a64-dma
          - allwinner,sun50i-a100-dma
          - allwinner,sun50i-h6-dma
      - items:
          - const: allwinner,sun8i-r40-dma
          - const: allwinner,sun50i-a64-dma
      - items:
          - enum:
              - allwinner,sun50i-h616-dma
              - allwinner,sun55i-a523-dma
              - allwinner,sun55i-a523-mcu-dma
          - const: allwinner,sun50i-a100-dma

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    items:
      - const: bus
      - const: mbus

  resets:
    maxItems: 1

required:
  - "#dma-cells"
  - compatible
  - reg
  - interrupts
  - clocks
  - resets
  - dma-channels

if:
  properties:
    compatible:
      contains:
        enum:
          - allwinner,sun20i-d1-dma

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.