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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/interrupt-controller/loongson,pch-msi.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Loongson PCH MSI Controller
maintainers:
- Jiaxun Yang <jiaxun.yang@flygoat.com>
description:
This interrupt controller is found in the Loongson LS7A family of PCH for
transforming interrupts from PCIe MSI into HyperTransport vectorized
interrupts.
properties:
compatible:
const: loongson,pch-msi-1.0
reg:
maxItems: 1
loongson,msi-base-vec:
description:
u32 value of the base of parent HyperTransport vector allocated
to PCH MSI.
allOf:
- $ref: "/schemas/types.yaml#/definitions/uint32"
- minimum: 0
maximum: 255
loongson,msi-num-vecs:
description:
u32 value of the number of parent HyperTransport vectors allocated
to PCH MSI.
allOf:
- $ref: "/schemas/types.yaml#/definitions/uint32"
- minimum: 1
maximum: 256
msi-controller: true
required:
- compatible
- reg
- msi-controller
- loongson,msi-base-vec
- loongson,msi-num-vecs
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
msi: msi-controller@2ff00000 {
compatible = "loongson,pch-msi-1.0";
reg = <0x2ff00000 0x4>;
msi-controller;
loongson,msi-base-vec = <64>;
loongson,msi-num-vecs = <64>;
interrupt-parent = <&htvec>;
};
...
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