From mboxrd@z Thu Jan 1 00:00:00 1970 From: robh@kernel.org (Rob Herring) Date: Thu, 3 Mar 2016 16:27:34 -0600 Subject: [PATCH 01/12] Docs: dt: add PCI IOMMU map bindings In-Reply-To: <5bcbc7c0c8825cb0a2ac216bac0ab99722a84618.1456514380.git.robin.murphy@arm.com> References: <5bcbc7c0c8825cb0a2ac216bac0ab99722a84618.1456514380.git.robin.murphy@arm.com> Message-ID: <20160303222734.GA6287@rob-hp-laptop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Feb 29, 2016 at 01:46:10PM +0000, Robin Murphy wrote: > From: Mark Rutland > > 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. > > Signed-off-by: Mark Rutland > --- > .../devicetree/bindings/pci/pci-iommu.txt | 171 +++++++++++++++++++++ > 1 file changed, 171 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pci/pci-iommu.txt Acked-by: Rob Herring