Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2m.yaml
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2m.yaml
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2m.yaml- Extension
.yaml- Size
- 1959 bytes
- Lines
- 85
- 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
dt-bindings/clock/cirrus,ep9301-syscon.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/cirrus,ep9301-dma-m2m.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cirrus Logic ep93xx SoC DMA controller
maintainers:
- Alexander Sverdlin <alexander.sverdlin@gmail.com>
- Nikita Shubin <nikita.shubin@maquefel.me>
allOf:
- $ref: dma-controller.yaml#
properties:
compatible:
oneOf:
- const: cirrus,ep9301-dma-m2m
- items:
- enum:
- cirrus,ep9302-dma-m2m
- cirrus,ep9307-dma-m2m
- cirrus,ep9312-dma-m2m
- cirrus,ep9315-dma-m2m
- const: cirrus,ep9301-dma-m2m
reg:
items:
- description: m2m0 channel registers
- description: m2m1 channel registers
clocks:
items:
- description: m2m0 channel gate clock
- description: m2m1 channel gate clock
clock-names:
items:
- const: m2m0
- const: m2m1
interrupts:
items:
- description: m2m0 channel interrupt
- description: m2m1 channel interrupt
'#dma-cells':
const: 2
description: |
The first cell is the unique device channel number as indicated by this
table for ep93xx:
10: SPI controller
11: IDE controller
The second cell is the DMA direction line number:
1: Memory to device
2: Device to memory
required:
- compatible
- reg
- clocks
- clock-names
- interrupts
additionalProperties: false
Annotation
- Immediate include surface: `dt-bindings/clock/cirrus,ep9301-syscon.h`.
- 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.