xref: /linux/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml (revision 3a39d672e7f48b8d6b91a09afa4b55352773b4b5)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/socionext,uniphier-pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Socionext UniPhier PCIe endpoint controller

description: |
  UniPhier PCIe endpoint 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-ep.yaml.

maintainers:
  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>

properties:
  compatible:
    enum:
      - socionext,uniphier-pro5-pcie-ep
      - socionext,uniphier-nx1-pcie-ep

  reg:
    minItems: 4
    maxItems: 5

  reg-names:
    minItems: 4
    items:
      - const: dbi
      - const: dbi2
      - const: link
      - const: addr_space
      - const: atu

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    minItems: 1
    maxItems: 2

  resets:
    minItems: 1
    maxItems: 2

  reset-names:
    minItems: 1
    maxItems: 2

  num-ib-windows:
    const: 16

  num-ob-windows:
    const: 16

  num-lanes: true

  phys:
    maxItems: 1

  phy-names:
    const: pcie-phy

allOf:
  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: socionext,uniphier-pro5-pcie-ep
    then:
      properties:
        reg:
          maxItems: 4
        reg-names:
          maxItems: 4
        clocks:
          minItems: 2
        clock-names:
          items:
            - const: gio
            - const: link
        resets:
          minItems: 2
        reset-names:
          items:
            - const: gio
            - const: link
    else:
      properties:
        reg:
          minItems: 5
        reg-names:
          minItems: 5
        clocks:
          maxItems: 1
        clock-names:
          const: link
        resets:
          maxItems: 1
        reset-names:
          const: link

required:
  - compatible
  - reg
  - reg-names
  - clocks
  - clock-names
  - resets
  - reset-names

unevaluatedProperties: false

examples:
  - |
    pcie_ep: pcie-ep@66000000 {
        compatible = "socionext,uniphier-pro5-pcie-ep";
        reg-names = "dbi", "dbi2", "link", "addr_space";
        reg = <0x66000000 0x1000>, <0x66001000 0x1000>,
              <0x66010000 0x10000>, <0x67000000 0x400000>;
        clock-names = "gio", "link";
        clocks = <&sys_clk 12>, <&sys_clk 24>;
        reset-names = "gio", "link";
        resets = <&sys_rst 12>, <&sys_rst 24>;
        num-ib-windows = <16>;
        num-ob-windows = <16>;
        num-lanes = <4>;
        phy-names = "pcie-phy";
        phys = <&pcie_phy>;
    };