Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
Extension
.yaml
Size
2656 bytes
Lines
122
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-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/qcom,bam-dma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Technologies Inc BAM DMA controller

maintainers:
  - Andy Gross <agross@kernel.org>
  - Bjorn Andersson <andersson@kernel.org>

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

properties:
  compatible:
    oneOf:
      - enum:
          # APQ8064, IPQ8064 and MSM8960
          - qcom,bam-v1.3.0
          # MSM8974, APQ8074 and APQ8084
          - qcom,bam-v1.4.0
          # MSM8916, SDM630
          - qcom,bam-v1.7.0
      - items:
          - enum:
              # SDM845, SM6115, SM8150, SM8250 and QCM2290
              - qcom,bam-v1.7.4
          - const: qcom,bam-v1.7.0

  clocks:
    maxItems: 1

  clock-names:
    items:
      - const: bam_clk

  "#dma-cells":
    const: 1

  interrupts:
    maxItems: 1

  dma-coherent: true

  iommus:
    minItems: 1
    maxItems: 6

  num-channels:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      Indicates supported number of DMA channels in a remotely controlled bam.

  qcom,controlled-remotely:
    type: boolean
    description:
      Indicates that the bam is controlled by remote processor i.e. execution
      environment.

  qcom,ee:
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 0
    maximum: 7
    description:
      Indicates the active Execution Environment identifier (0-7) used in the
      secure world.

  qcom,num-ees:

Annotation

Implementation Notes