Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ddr.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ddr.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ddr.yaml
Extension: .yaml
Size: 2589 bytes
Lines: 107
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-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/fsl/fsl,ddr.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale DDR memory controller

maintainers:
  - Borislav Petkov <bp@alien8.de>
  - York Sun <york.sun@nxp.com>

properties:
  $nodename:
    pattern: "^memory-controller@[0-9a-f]+$"

  compatible:
    oneOf:
      - items:
          - enum:
              - fsl,qoriq-memory-controller-v4.4
              - fsl,qoriq-memory-controller-v4.5
              - fsl,qoriq-memory-controller-v4.7
              - fsl,qoriq-memory-controller-v5.0
          - const: fsl,qoriq-memory-controller
      - enum:
          - fsl,bsc9132-memory-controller
          - fsl,mpc8536-memory-controller
          - fsl,mpc8540-memory-controller
          - fsl,mpc8541-memory-controller
          - fsl,mpc8544-memory-controller
          - fsl,mpc8548-memory-controller
          - fsl,mpc8555-memory-controller
          - fsl,mpc8560-memory-controller
          - fsl,mpc8568-memory-controller
          - fsl,mpc8569-memory-controller
          - fsl,mpc8572-memory-controller
          - fsl,mpc8349-memory-controller
          - fsl,p1020-memory-controller
          - fsl,p1021-memory-controller
          - fsl,p2020-memory-controller
          - fsl,qoriq-memory-controller
          - nxp,imx9-memory-controller

  interrupts:
    maxItems: 1

  little-endian:
    description:
      Specifies little-endian access to registers. If omitted, big-endian will
      be used.
    type: boolean

  reg:
    items:
      - description: Controller register space
      - description: Inject register space
    minItems: 1

  reg-names:
    items:
      - const: ctrl
      - const: inject
    minItems: 1

required:
  - compatible
  - interrupts
  - reg

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.