Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
Extension
.yaml
Size
3239 bytes
Lines
121
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/sifive,fu740-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: SiFive FU740 PCIe host controller

description: |+
  SiFive FU740 PCIe host controller is based on the Synopsys DesignWare
  PCI core. It shares common features with the PCIe DesignWare core and
  inherits common properties defined in
  Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml.

maintainers:
  - Paul Walmsley <paul.walmsley@sifive.com>
  - Greentime Hu <greentime.hu@sifive.com>

allOf:
  - $ref: /schemas/pci/snps,dw-pcie.yaml#

properties:
  compatible:
    const: sifive,fu740-pcie

  reg:
    maxItems: 3

  reg-names:
    items:
      - const: dbi
      - const: config
      - const: mgmt

  dma-coherent: true

  num-lanes:
    const: 8

  msi-parent: true

  interrupt-names:
    items:
      - const: msi
      - const: inta
      - const: intb
      - const: intc
      - const: intd

  resets:
    description: A phandle to the PCIe power up reset line.
    maxItems: 1

  clocks:
    maxItems: 1

  clock-names:
    const: pcie_aux

  pwren-gpios:
    description: Should specify the GPIO for controlling the PCI bus device power on.
    maxItems: 1

  reset-gpios:
    maxItems: 1

required:
  - dma-coherent
  - num-lanes
  - interrupts

Annotation

Implementation Notes