xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/pci/rockchip,rk3399-pcie-ep.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/rockchip,rk3399-pcie-ep.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Rockchip AXI PCIe Endpoint

maintainers:
  - Shawn Lin <shawn.lin@rock-chips.com>

allOf:
  - $ref: /schemas/pci/pci-ep.yaml#
  - $ref: rockchip,rk3399-pcie-common.yaml#

properties:
  compatible:
    const: rockchip,rk3399-pcie-ep

  reg: true

  reg-names:
    items:
      - const: apb-base
      - const: mem-base

  rockchip,max-outbound-regions:
    description: Maximum number of outbound regions
    $ref: /schemas/types.yaml#/definitions/uint32
    maximum: 32
    default: 32

required:
  - rockchip,max-outbound-regions

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/clock/rk3399-cru.h>

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

        pcie-ep@f8000000 {
            compatible = "rockchip,rk3399-pcie-ep";
            reg = <0x0 0xfd000000 0x0 0x1000000>, <0x0 0xfa000000 0x0 0x2000000>;
            reg-names = "apb-base", "mem-base";
            clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
              <&cru PCLK_PCIE>, <&cru SCLK_PCIE_PM>;
            clock-names = "aclk", "aclk-perf",
                    "hclk", "pm";
            max-functions = /bits/ 8 <8>;
            num-lanes = <4>;
            resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
              <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE> ,
              <&cru SRST_PCIE_PM>, <&cru SRST_P_PCIE>, <&cru SRST_A_PCIE>;
            reset-names = "core", "mgmt", "mgmt-sticky", "pipe",
                    "pm", "pclk", "aclk";
            phys = <&pcie_phy 0>, <&pcie_phy 1>, <&pcie_phy 2>, <&pcie_phy 3>;
            phy-names = "pcie-phy-0", "pcie-phy-1", "pcie-phy-2", "pcie-phy-3";
            rockchip,max-outbound-regions = <16>;
            pinctrl-names = "default";
            pinctrl-0 = <&pcie_clkreqnb_cpm>;
        };
    };
...