Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/qcom,sa8255p-pcie-ep.yaml
Extension
.yaml
Size
2929 bytes
Lines
111
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

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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/qcom,sa8255p-pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm firmware managed PCIe Endpoint Controller

description:
  Qualcomm SA8255p SoC PCIe endpoint controller is based on the Synopsys
  DesignWare PCIe IP which is managed by firmware.

maintainers:
  - Manivannan Sadhasivam <mani@kernel.org>

properties:
  compatible:
    const: qcom,sa8255p-pcie-ep

  reg:
    items:
      - description: Qualcomm-specific PARF configuration registers
      - description: DesignWare PCIe registers
      - description: External local bus interface registers
      - description: Address Translation Unit (ATU) registers
      - description: Memory region used to map remote RC address space
      - description: BAR memory region
      - description: DMA register space

  reg-names:
    items:
      - const: parf
      - const: dbi
      - const: elbi
      - const: atu
      - const: addr_space
      - const: mmio
      - const: dma

  interrupts:
    items:
      - description: PCIe Global interrupt
      - description: PCIe Doorbell interrupt
      - description: DMA interrupt

  interrupt-names:
    items:
      - const: global
      - const: doorbell
      - const: dma

  iommus:
    maxItems: 1

  reset-gpios:
    description: GPIO used as PERST# input signal
    maxItems: 1

  wake-gpios:
    description: GPIO used as WAKE# output signal
    maxItems: 1

  power-domains:
    maxItems: 1

  dma-coherent: true

  num-lanes:
    default: 2

Annotation

Implementation Notes