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-bus.yaml#
  17
  18 properties:
  19   compatible:
  20     oneOf:
  21       - const: loongson,ls2k-pci
  22       - const: loongson,ls7a-pci
  23       - const: loongson,rs780e-pci
  24
  25   reg:
  26     minItems: 1
  27     maxItems: 2
  28     items:
  29       - description: CFG0 standard config space register
  30       - description: CFG1 extended config space register
  31
  32   ranges:
  33     minItems: 1
  34     maxItems: 3
  35
  36
  37 required:
  38   - compatible
  39   - reg
  40   - ranges
  41
  42 unevaluatedProperties: false
  43
  44 examples:
  45   - |
  46
  47     bus {
  48         #address-cells = <2>;
  49         #size-cells = <2>;
  50         pcie@1a000000 {
  51             compatible = "loongson,rs780e-pci";
  52             device_type = "pci";
  53             #address-cells = <3>;
  54             #size-cells = <2>;
  55
  56             // CPU_PHYSICAL(2)  SIZE(2)
  57             reg = <0x0 0x1a000000  0x0 0x2000000>;
  58
  59             // BUS_ADDRESS(3)  CPU_PHYSICAL(2)  SIZE(2)
  60             ranges = <0x01000000 0x0 0x00004000  0x0 0x00004000  0x0 0x00004000>,
  61                      <0x02000000 0x0 0x40000000  0x0 0x40000000  0x0 0x40000000>;
  62         };
  63     };
  64 ...