Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.yaml
Extension
.yaml
Size
2724 bytes
Lines
101
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/dma/nvidia,tegra20-apbdma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra APB DMA Controller

description:
  The NVIDIA Tegra APB DMA controller is a hardware component that
  enables direct memory access (DMA) on Tegra systems. It facilitates
  data transfer between I/O devices and main memory without constant
  CPU intervention.

maintainers:
  - Jonathan Hunter <jonathanh@nvidia.com>

properties:
  compatible:
    oneOf:
      - enum:
          - nvidia,tegra114-apbdma
          - nvidia,tegra20-apbdma
      - items:
          - const: nvidia,tegra30-apbdma
          - const: nvidia,tegra20-apbdma
      - items:
          - enum:
              - nvidia,tegra124-apbdma
              - nvidia,tegra210-apbdma
          - const: nvidia,tegra148-apbdma

  reg:
    maxItems: 1

  "#dma-cells":
    const: 1

  clocks:
    maxItems: 1

  clock-names:
    const: dma

  interrupts:
    description:
      Should contain all of the per-channel DMA interrupts in
      ascending order with respect to the DMA channel index.
    minItems: 1
    maxItems: 32

  resets:
    maxItems: 1

  reset-names:
    const: dma

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

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

unevaluatedProperties: false

Annotation

Implementation Notes