Documentation/devicetree/bindings/pci/mbvl,gpex40-pcie.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/mbvl,gpex40-pcie.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/mbvl,gpex40-pcie.yaml
Extension
.yaml
Size
4739 bytes
Lines
174
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/pci/mbvl,gpex40-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Mobiveil AXI PCIe Host Bridge

maintainers:
  - Frank Li <Frank.Li@nxp.com>

description:
  Mobiveil's GPEX 4.0 is a PCIe Gen4 host bridge IP. This configurable IP
  has up to 8 outbound and inbound windows for address translation.

  NXP Layerscape PCIe Gen4 controller (Deprecated) base on Mobiveil's GPEX 4.0.

properties:
  compatible:
    enum:
      - fsl,lx2160a-pcie
      - mbvl,gpex40-pcie

  reg:
    items:
      - description: PCIe controller registers
      - description: Bridge config registers
      - description: GPIO registers to control slot power
      - description: MSI registers
    minItems: 2

  reg-names:
    items:
      - const: csr_axi_slave
      - const: config_axi_slave
      - const: gpio_slave
      - const: apb_csr
    minItems: 2

  apio-wins:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      number of requested APIO outbound windows
        1. Config window
        2. Memory window
    default: 2
    maximum: 256

  ppio-wins:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: number of requested PPIO inbound windows
    default: 1
    maximum: 256

  interrupt-controller: true

  "#interrupt-cells":
    const: 1

  interrupts:
    minItems: 1
    maxItems: 3

  interrupt-names:
    minItems: 1
    maxItems: 3

  dma-coherent: true

  msi-parent: true

Annotation

Implementation Notes