47 lines
1.4 KiB
YAML
47 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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$id: http://devicetree.org/schemas/interrupt-controller/msi-controller.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: MSI controller
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maintainers:
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- Marc Zyngier <maz@kernel.org>
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description: |
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An MSI controller signals interrupts to a CPU when a write is made
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to an MMIO address by some master. An MSI controller may feature a
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number of doorbells.
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properties:
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"#msi-cells":
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description: |
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The number of cells in an msi-specifier, required if not zero.
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Typically this will encode information related to sideband data,
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and will not encode doorbells or payloads as these can be
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configured dynamically.
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The meaning of the msi-specifier is defined by the device tree
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binding of the specific MSI controller.
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enum: [0, 1]
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msi-controller:
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description:
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Identifies the node as an MSI controller.
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$ref: /schemas/types.yaml#/definitions/flag
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msi-ranges:
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description:
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A list of <phandle intspec span> tuples, where "phandle" is the
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parent interrupt controller, "intspec" is the starting/base
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interrupt specifier and "span" is the size of the
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range. Multiple ranges can be provided.
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$ref: /schemas/types.yaml#/definitions/phandle-array
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dependencies:
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"#msi-cells": [ msi-controller ]
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additionalProperties: true
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