Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
Extension
.yaml
Size
3364 bytes
Lines
96
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/rockchip-dw-pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: DesignWare based PCIe Endpoint controller on Rockchip SoCs

maintainers:
  - Niklas Cassel <cassel@kernel.org>

description: |+
  RK3588 SoC PCIe Endpoint controller is based on the Synopsys DesignWare
  PCIe IP and thus inherits all the common properties defined in
  snps,dw-pcie-ep.yaml.

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

properties:
  compatible:
    enum:
      - rockchip,rk3568-pcie-ep
      - rockchip,rk3588-pcie-ep

  reg:
    items:
      - description: Data Bus Interface (DBI) registers
      - description: Data Bus Interface (DBI) shadow registers
      - description: Rockchip designed configuration registers
      - description: Memory region used to map remote RC address space
      - description: Internal Address Translation Unit (iATU) registers

  reg-names:
    items:
      - const: dbi
      - const: dbi2
      - const: apb
      - const: addr_space
      - const: atu

required:
  - interrupts
  - interrupt-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/rockchip,rk3588-cru.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/power/rk3588-power.h>
    #include <dt-bindings/reset/rockchip,rk3588-cru.h>

    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        pcie3x4_ep: pcie-ep@fe150000 {
            compatible = "rockchip,rk3588-pcie-ep";
            reg = <0xa 0x40000000 0x0 0x00100000>,
                  <0xa 0x40100000 0x0 0x00100000>,
                  <0x0 0xfe150000 0x0 0x00010000>,
                  <0x9 0x00000000 0x0 0x40000000>,
                  <0xa 0x40300000 0x0 0x00100000>;
            reg-names = "dbi", "dbi2", "apb", "addr_space", "atu";
            clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>,
                     <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>,

Annotation

Implementation Notes