Documentation/devicetree/bindings/pci/rockchip,rk3399-pcie-ep.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pci/rockchip,rk3399-pcie-ep.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Rockchip AXI PCIe Endpoint
   8
   9 maintainers:
  10   - Shawn Lin <shawn.lin@rock-chips.com>
  11
  12 allOf:
  13   - $ref: /schemas/pci/pci-ep.yaml#
  14   - $ref: rockchip,rk3399-pcie-common.yaml#
  15
  16 properties:
  17   compatible:
  18     const: rockchip,rk3399-pcie-ep
  19
  20   reg: true
  21
  22   reg-names:
  23     items:
  24       - const: apb-base
  25       - const: mem-base
  26
  27   rockchip,max-outbound-regions:
  28     description: Maximum number of outbound regions
  29     $ref: /schemas/types.yaml#/definitions/uint32
  30     maximum: 32
  31     default: 32
  32
  33 required:
  34   - rockchip,max-outbound-regions
  35
  36 unevaluatedProperties: false
  37
  38 examples:
  39   - |
  40     #include <dt-bindings/interrupt-controller/arm-gic.h>
  41     #include <dt-bindings/gpio/gpio.h>
  42     #include <dt-bindings/clock/rk3399-cru.h>
  43
  44     bus {
  45         #address-cells = <2>;
  46         #size-cells = <2>;
  47
  48         pcie-ep@f8000000 {
  49             compatible = "rockchip,rk3399-pcie-ep";
  50             reg = <0x0 0xfd000000 0x0 0x1000000>, <0x0 0xfa000000 0x0 0x2000000>;
  51             reg-names = "apb-base", "mem-base";
  52             clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
  53               <&cru PCLK_PCIE>, <&cru SCLK_PCIE_PM>;
  54             clock-names = "aclk", "aclk-perf",
  55                     "hclk", "pm";
  56             max-functions = /bits/ 8 <8>;
  57             num-lanes = <4>;
  58             resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
  59               <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE> ,
  60               <&cru SRST_PCIE_PM>, <&cru SRST_P_PCIE>, <&cru SRST_A_PCIE>;
  61             reset-names = "core", "mgmt", "mgmt-sticky", "pipe",
  62                     "pm", "pclk", "aclk";
  63             phys = <&pcie_phy 0>, <&pcie_phy 1>, <&pcie_phy 2>, <&pcie_phy 3>;
  64             phy-names = "pcie-phy-0", "pcie-phy-1", "pcie-phy-2", "pcie-phy-3";
  65             rockchip,max-outbound-regions = <16>;
  66             pinctrl-names = "default";
  67             pinctrl-0 = <&pcie_clkreqnb_cpm>;
  68         };
  69     };
  70 ...