Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
Extension
.yaml
Size
11765 bytes
Lines
385
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/nvidia,tegra194-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra194 (and later) PCIe controller (Synopsys DesignWare Core based)

maintainers:
  - Thierry Reding <thierry.reding@gmail.com>
  - Jon Hunter <jonathanh@nvidia.com>
  - Vidya Sagar <vidyas@nvidia.com>

description: |
  This PCIe controller is based on the Synopsys DesignWare PCIe IP and thus
  inherits all the common properties defined in snps,dw-pcie.yaml. Some of
  the controller instances are dual mode where in they can work either in
  Root Port mode or Endpoint mode but one at a time.

  See nvidia,tegra194-pcie-ep.yaml for details on the Endpoint mode device
  tree bindings.

properties:
  compatible:
    enum:
      - nvidia,tegra194-pcie
      - nvidia,tegra234-pcie

  reg:
    minItems: 4
    items:
      - description: controller's application logic registers
      - description: configuration registers
      - description: iATU and DMA registers. This is where the iATU (internal
          Address Translation Unit) registers of the PCIe core are made
          available for software access.
      - description: aperture where the Root Port's own configuration
          registers are available.
      - description: aperture to access the configuration space through ECAM.

  reg-names:
    minItems: 4
    items:
      - const: appl
      - const: config
      - const: atu_dma
      - const: dbi
      - const: ecam

  interrupts:
    items:
      - description: controller interrupt
      - description: MSI interrupt

  interrupt-names:
    items:
      - const: intr
      - const: msi

  clocks:
    minItems: 1
    items:
      - description: core clock
      - description: monitor clock

  clock-names:
    minItems: 1
    items:
      - const: core
      - const: core_m

Annotation

Implementation Notes