1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/interrupt-controller/msi-controller.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: MSI controller 8 9maintainers: 10 - Marc Zyngier <maz@kernel.org> 11 12description: | 13 An MSI controller signals interrupts to a CPU when a write is made 14 to an MMIO address by some master. An MSI controller may feature a 15 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 be 24 configured dynamically. 25 26 The meaning of the msi-specifier is defined by the device tree 27 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/flag 34 35 msi-ranges: 36 description: 37 A list of <phandle intspec span> tuples, where "phandle" is the 38 parent interrupt controller, "intspec" is the starting/base 39 interrupt specifier and "span" is the size of the 40 range. Multiple ranges can be provided. 41 $ref: /schemas/types.yaml#/definitions/phandle-array 42 43dependencies: 44 "#msi-cells": [ msi-controller ] 45 46additionalProperties: true 47