Documentation/devicetree/bindings/powerpc/fsl/ecm.txt

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/powerpc/fsl/ecm.txt

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/powerpc/fsl/ecm.txt
Extension: .txt
Size: 1853 bytes
Lines: 61
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
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

=====================================================================
E500 LAW & Coherency Module Device Tree Binding
Copyright (C) 2009 Freescale Semiconductor Inc.
=====================================================================

Local Access Window (LAW) Node

The LAW node represents the region of CCSR space where local access
windows are configured.  For ECM based devices this is the first 4k
of CCSR space that includes CCSRBAR, ALTCBAR, ALTCAR, BPTR, and some
number of local access windows as specified by fsl,num-laws.

PROPERTIES

  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,ecm-law"

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  The value specifies the
          physical address offset and length of the CCSR space
          registers.

  - fsl,num-laws
      Usage: required
      Value type: <u32>
      Definition: The value specifies the number of local access
          windows for this device.

=====================================================================

E500 Coherency Module Node

The E500 LAW node represents the region of CCSR space where ECM config
and error reporting registers exist, this is the second 4k (0x1000)
of CCSR space.

PROPERTIES

  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,CHIP-ecm", "fsl,ecm" where
      CHIP is the processor (mpc8572, mpc8544, etc.)

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  The value specifies the
          physical address offset and length of the CCSR space
          registers.

   - interrupts
      Usage: required
      Value type: <prop-encoded-array>

=====================================================================

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.