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The GICv5 interrupt controller architecture is composed of: - one or more Interrupt Routing Service (IRS) - zero or more Interrupt Translation Service (ITS) - zero or more Interrupt Wire Bridge (IWB) Describe a GICv5 implementation by specifying a top level node corresponding to the GICv5 system component. IRS nodes are added as GICv5 system component children. An ITS is associated with an IRS so ITS nodes are described as IRS children - use the hierarchy explicitly in the device tree to define the association. IWB nodes are described as a separate schema. An IWB is connected to a single ITS, the connection is made explicit through the msi-parent property and therefore is not required to be explicit through a parent-child relationship in the device tree. Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Marc Zyngier <maz@kernel.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-1-12e71f1b3528@kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.