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authorMark Rutland <mark.rutland@arm.com>2016-09-12 17:13:39 +0100
committerWill Deacon <will.deacon@arm.com>2016-09-16 09:34:14 +0100
commit6ec2392ce0bdc04122d4a27c66f599f2fdc06387 (patch)
treef998c5185c7cb6fea034cfeb057ad16a7c8b4b84 /drivers/of
parent8ded2909e2c6c34b70ebb45480f6ce68c64fbddc (diff)
Docs: dt: add PCI IOMMU map bindings
The existing IOMMU bindings are able to specify the relationship between masters and IOMMUs, but they are insufficient for describing the general case of hotpluggable busses such as PCI where the set of masters is not known until runtime, and the relationship between masters and IOMMUs is a property of the integration of the system. This patch adds a generic binding for mapping PCI devices to IOMMUs, using a new iommu-map property (specific to PCI*) which may be used to map devices (identified by their Requester ID) to sideband data for the IOMMU which they master through. Acked-by: Rob Herring <robh@kernel.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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