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

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

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie-ep.yaml
Extension
.yaml
Size
9647 bytes
Lines
324
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-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NVIDIA Tegra194 (and later) PCIe Endpoint 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-ep.yaml.  Some
  of the controller instances are dual mode; they can work either in Root
  Port mode or Endpoint mode but one at a time.

  On Tegra194, controllers C0, C4 and C5 support Endpoint mode.
  On Tegra234, controllers C5, C6, C7 and C10 support Endpoint mode.

  Note: On Tegra194's P2972-0000 platform, only C5 controller can be enabled to
  operate in the Endpoint mode because of the way the platform is designed.

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

  reg:
    items:
      - description: controller's application logic 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 used to map the remote Root Complex address space

  reg-names:
    items:
      - const: appl
      - const: atu_dma
      - const: dbi
      - const: addr_space

  interrupts:
    items:
      - description: controller interrupt

  interrupt-names:
    items:
      - const: intr

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

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

  resets:
    items:

Annotation

Implementation Notes