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    Subject[PATCH 3/5] dt-bindings: Document Loongson PCI Host Controller
    Date
    PCI host controller found on Loongson PCHs and SoCs.

    Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
    ---
    .../devicetree/bindings/pci/loongson.yaml | 52 +++++++++++++++++++
    1 file changed, 52 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/pci/loongson.yaml

    diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
    new file mode 100644
    index 000000000000..623847980189
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/pci/loongson.yaml
    @@ -0,0 +1,52 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/pci/loongson.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Loongson PCI Host Controller
    +
    +maintainers:
    + - Jiaxun Yang <jiaxun.yang@flygoat.com>
    +
    +description: |+
    + PCI host controller found on Loongson PCHs and SoCs.
    +
    +allOf:
    + - $ref: /schemas/pci/pci-bus.yaml#
    +
    +properties:
    + compatible:
    + oneOf:
    + - const: loongson,rs780e-pci
    + - const: loongson,ls7a-pci
    + - const: loongson,ls2k-pci
    +
    + reg:
    + minItems: 1
    + maxItems: 2
    + items:
    + - description: CFG0 standard config space register
    + - description: CFG1 extend config space register
    +
    + ranges:
    + maxItems: 3
    +
    +
    +required:
    + - compatible
    + - reg
    + - ranges
    +
    +examples:
    + - |
    + pci@1a000000 {
    + compatible = "loongson,rs780e-pci";
    + device_type = "pci";
    + #address-cells = <3>;
    + #size-cells = <2>;
    +
    + reg = <0x1a000000 0x2000000>;
    + ranges = <0x02000000 0 0x40000000 0x40000000 0 0x40000000>;
    + };
    +...
    --
    2.26.0.rc2

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