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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/interrupt-controller/msi-controller.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: MSI controller8 9maintainers:10 - Marc Zyngier <maz@kernel.org>11 12description: |13 An MSI controller signals interrupts to a CPU when a write is made14 to an MMIO address by some master. An MSI controller may feature a15 number of doorbells.16 17properties:18 "#msi-cells":19 description: |20 The number of cells in an msi-specifier, required if not zero.21 22 Typically this will encode information related to sideband data,23 and will not encode doorbells or payloads as these can be24 configured dynamically.25 26 The meaning of the msi-specifier is defined by the device tree27 binding of the specific MSI controller.28 enum: [0, 1]29 30 msi-controller:31 description:32 Identifies the node as an MSI controller.33 $ref: /schemas/types.yaml#/definitions/flag34 35 msi-ranges:36 description:37 A list of <phandle intspec span> tuples, where "phandle" is the38 parent interrupt controller, "intspec" is the starting/base39 interrupt specifier and "span" is the size of the40 range. Multiple ranges can be provided.41 $ref: /schemas/types.yaml#/definitions/phandle-array42 43dependencies:44 "#msi-cells": [ msi-controller ]45 46additionalProperties: true47