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d782e6e7aa
Loongson PCI controllers found in LS2K1000/2000 SoCs
(loongson,ls2k-pci), 7A1000/2000 bridge chips (loongson,ls7a-pci), and
RS780E bridge chips (loongson,rs780e-pci) all have their paired MSI
controllers.
Though only the one in LS2K2000 SoC is described in devicetree, we
should document the property for all variants. For the same reason, it
isn't marked as required for now.
Fixes: 83e757ecfd ("dt-bindings: Document Loongson PCI Host Controller")
Signed-off-by: Yao Zi <me@ziyao.cc>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251209140006.54821-3-me@ziyao.cc
65 lines
1.4 KiB
YAML
65 lines
1.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pci/loongson.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Loongson PCI Host Controller
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maintainers:
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- Jiaxun Yang <jiaxun.yang@flygoat.com>
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description: |+
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PCI host controller found on Loongson PCHs and SoCs.
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allOf:
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- $ref: /schemas/pci/pci-host-bridge.yaml#
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properties:
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compatible:
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enum:
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- loongson,ls2k-pci
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- loongson,ls7a-pci
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- loongson,rs780e-pci
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reg:
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minItems: 1
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items:
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- description: CFG0 standard config space register
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- description: CFG1 extended config space register
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ranges:
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minItems: 1
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maxItems: 3
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msi-parent: true
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required:
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- compatible
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- reg
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- ranges
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unevaluatedProperties: false
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examples:
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- |
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bus {
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#address-cells = <2>;
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#size-cells = <2>;
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pcie@1a000000 {
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compatible = "loongson,rs780e-pci";
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device_type = "pci";
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#address-cells = <3>;
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#size-cells = <2>;
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// CPU_PHYSICAL(2) SIZE(2)
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reg = <0x0 0x1a000000 0x0 0x2000000>;
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// BUS_ADDRESS(3) CPU_PHYSICAL(2) SIZE(2)
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ranges = <0x01000000 0x0 0x00004000 0x0 0x00004000 0x0 0x00004000>,
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<0x02000000 0x0 0x40000000 0x0 0x40000000 0x0 0x40000000>;
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};
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};
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...
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