From mboxrd@z Thu Jan 1 00:00:00 1970 From: andreas.herrmann@calxeda.com (Andreas Herrmann) Date: Thu, 30 Jan 2014 21:17:52 +0100 Subject: [PATCH] documentation/iommu: Update description of ARM System MMU binding In-Reply-To: <1391105889-32718-1-git-send-email-andreas.herrmann@calxeda.com> Message-ID: <20140130201752.GJ13543@alberich> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds descriptions fore new properties of device tree binding for the ARM SMMU architecture. These properties control arm-smmu driver options. Cc: Grant Likely Cc: Will Deacon Cc: Andreas Herrmann Acked-by: Rob Herring Signed-off-by: Andreas Herrmann --- .../devicetree/bindings/iommu/arm,smmu.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) Hi Will, I should have included this patch in the series as it describes the options introduced there. Andreas diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt index e34c6cd..7ad8ff0 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -48,6 +48,16 @@ conditions. from the mmu-masters towards memory) node for this SMMU. +- arm,smmu-isolate-devices : Enable device isolation for all masters + of this SMMU. Ie. each master will be attached to + its own iommu domain. + +- calxeda,smmu-secure-config-access : Enable proper handling of buggy + implementations that always use secure access to + SMMU configuration registers. In this case + non-secure aliases of secure registers have to be + used during SMMU configuration. + Example: smmu { @@ -67,4 +77,5 @@ Example: */ mmu-masters = <&dma0 0xd01d 0xd01e>, <&dma1 0xd11c>; + arm,smmu-isolate-devices; }; -- 1.7.9.5