Documentation/devicetree/bindings/pci/loongson.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pci/loongson.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Loongson PCI Host Controller
   8
   9 maintainers:
  10   - Jiaxun Yang <jiaxun.yang@flygoat.com>
  11
  12 description: |+
  13   PCI host controller found on Loongson PCHs and SoCs.
  14
  15 allOf:
  16   - $ref: /schemas/pci/pci-host-bridge.yaml#
  17
  18 properties:
  19   compatible:
  20     enum:
  21       - loongson,ls2k-pci
  22       - loongson,ls7a-pci
  23       - loongson,rs780e-pci
  24
  25   reg:
  26     minItems: 1
  27     items:
  28       - description: CFG0 standard config space register
  29       - description: CFG1 extended config space register
  30
  31   ranges:
  32     minItems: 1
  33     maxItems: 3
  34
  35
  36 required:
  37   - compatible
  38   - reg
  39   - ranges
  40
  41 unevaluatedProperties: false
  42
  43 examples:
  44   - |
  45
  46     bus {
  47         #address-cells = <2>;
  48         #size-cells = <2>;
  49         pcie@1a000000 {
  50             compatible = "loongson,rs780e-pci";
  51             device_type = "pci";
  52             #address-cells = <3>;
  53             #size-cells = <2>;
  54
  55             // CPU_PHYSICAL(2)  SIZE(2)
  56             reg = <0x0 0x1a000000  0x0 0x2000000>;
  57
  58             // BUS_ADDRESS(3)  CPU_PHYSICAL(2)  SIZE(2)
  59             ranges = <0x01000000 0x0 0x00004000  0x0 0x00004000  0x0 0x00004000>,
  60                      <0x02000000 0x0 0x40000000  0x0 0x40000000  0x0 0x40000000>;
  61         };
  62     };
  63 ...