Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml
Extension
.yaml
Size
2834 bytes
Lines
101
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/pci/intel,ixp4xx-pci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Intel IXP4xx PCI controller

maintainers:
  - Linus Walleij <linusw@kernel.org>

description: PCI host controller found in the Intel IXP4xx SoC series.

allOf:
  - $ref: /schemas/pci/pci-host-bridge.yaml#

properties:
  compatible:
    items:
      - enum:
          - intel,ixp42x-pci
          - intel,ixp43x-pci
    description: The two supported variants are ixp42x and ixp43x,
      though more variants may exist.

  reg:
    items:
      - description: IXP4xx-specific registers

  interrupts:
    items:
      - description: Main PCI interrupt
      - description: PCI DMA interrupt 1
      - description: PCI DMA interrupt 2

  ranges:
    maxItems: 2
    description: Typically one memory range of 64MB and one IO
      space range of 64KB.

  dma-ranges:
    maxItems: 1
    description: The DMA range tells the PCI host which addresses
      the RAM is at. It can map only 64MB so if the RAM is bigger
      than 64MB the DMA access has to be restricted to these
      addresses.

  "#interrupt-cells": true

  interrupt-map: true

  interrupt-map-mask:
    items:
      - const: 0xf800
      - const: 0
      - const: 0
      - const: 7

required:
  - compatible
  - reg
  - dma-ranges
  - "#interrupt-cells"
  - interrupt-map
  - interrupt-map-mask

unevaluatedProperties: false

examples:
  - |

Annotation

Implementation Notes