Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml
Extension
.yaml
Size
1300 bytes
Lines
63
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/nvmem/layouts/fixed-layout.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVMEM layout for fixed NVMEM cells

description:
  Many NVMEM devices have hardcoded cells layout (offset and size of defined
  NVMEM content doesn't change).

  This binding allows defining such NVMEM layout with its cells. It can be used
  on top of any NVMEM device.

maintainers:
  - Rafał Miłecki <rafal@milecki.pl>

properties:
  compatible:
    const: fixed-layout

  "#address-cells":
    const: 1

  "#size-cells":
    const: 1

patternProperties:
  "@[a-f0-9]+(,[0-7])?$":
    type: object
    $ref: fixed-cell.yaml
    unevaluatedProperties: false

required:
  - compatible

additionalProperties: false

examples:
  - |
    nvmem-layout {
        compatible = "fixed-layout";
        #address-cells = <1>;
        #size-cells = <1>;

        mac@100 {
            compatible = "mac-base";
            reg = <0x100 0x6>;
            #nvmem-cell-cells = <1>;
        };

        mac@110 {
            compatible = "mac-base";
            reg = <0x110 0x11>;
            #nvmem-cell-cells = <1>;
        };

        calibration@4000 {
            reg = <0x4000 0x100>;
        };
    };

Annotation

Implementation Notes