0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: "http://devicetree.org/schemas/interrupt-controller/loongson,pch-msi.yaml#"
0005 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
0006
0007 title: Loongson PCH MSI Controller
0008
0009 maintainers:
0010 - Jiaxun Yang <jiaxun.yang@flygoat.com>
0011
0012 description:
0013 This interrupt controller is found in the Loongson LS7A family of PCH for
0014 transforming interrupts from PCIe MSI into HyperTransport vectorized
0015 interrupts.
0016
0017 properties:
0018 compatible:
0019 const: loongson,pch-msi-1.0
0020
0021 reg:
0022 maxItems: 1
0023
0024 loongson,msi-base-vec:
0025 description:
0026 u32 value of the base of parent HyperTransport vector allocated
0027 to PCH MSI.
0028 $ref: "/schemas/types.yaml#/definitions/uint32"
0029 minimum: 0
0030 maximum: 255
0031
0032 loongson,msi-num-vecs:
0033 description:
0034 u32 value of the number of parent HyperTransport vectors allocated
0035 to PCH MSI.
0036 $ref: "/schemas/types.yaml#/definitions/uint32"
0037 minimum: 1
0038 maximum: 256
0039
0040 msi-controller: true
0041
0042 required:
0043 - compatible
0044 - reg
0045 - msi-controller
0046 - loongson,msi-base-vec
0047 - loongson,msi-num-vecs
0048
0049 additionalProperties: true #fixme
0050
0051 examples:
0052 - |
0053 #include <dt-bindings/interrupt-controller/irq.h>
0054 msi: msi-controller@2ff00000 {
0055 compatible = "loongson,pch-msi-1.0";
0056 reg = <0x2ff00000 0x4>;
0057 msi-controller;
0058 loongson,msi-base-vec = <64>;
0059 loongson,msi-num-vecs = <64>;
0060 interrupt-parent = <&htvec>;
0061 };
0062 ...
