From 0c9d70d72453036195682e64efce77872e9f268b Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Thu, 30 Jan 2014 20:17:52 +0000 Subject: documentation/iommu: update description of ARM System MMU binding This patch adds descriptions for new properties of the device tree binding for the ARM SMMU architecture. These properties control arm-smmu driver options. Cc: Grant Likely Acked-by: Rob Herring Signed-off-by: Andreas Herrmann [will: removed device isolation property, as this has been dropped and fixed up spacing in documentation] Signed-off-by: Will Deacon --- Documentation/devicetree/bindings/iommu/arm,smmu.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt index e34c6cd..f284b99 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -48,6 +48,12 @@ conditions. from the mmu-masters towards memory) node for this SMMU. +- 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 { -- cgit v1.1 From a8689f65de5a8c3e47bf29c2550dfebe0744e077 Mon Sep 17 00:00:00 2001 From: Florian Vaussard Date: Fri, 28 Feb 2014 14:42:35 -0600 Subject: Documentation: dt: add OMAP iommu bindings This patch adds the iommu bindings for all OMAP2+ SoCs. Apart from the standard bindings used by OMAP peripherals, this patch uses a 'dma-window' (already used by Tegra SMMU) and adds two OMAP custom bindings - 'ti,#tlb-entries' and 'ti,iommu-bus-err-back'. Signed-off-by: Florian Vaussard [s-anna@ti.com: split bindings document, add dra7 and bus error back] Signed-off-by: Suman Anna Signed-off-by: Joerg Roedel --- .../devicetree/bindings/iommu/ti,omap-iommu.txt | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt new file mode 100644 index 0000000..42531dc --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt @@ -0,0 +1,26 @@ +OMAP2+ IOMMU + +Required properties: +- compatible : Should be one of, + "ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances + "ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances + "ti,dra7-iommu" for DRA7xx IOMMU instances +- ti,hwmods : Name of the hwmod associated with the IOMMU instance +- reg : Address space for the configuration registers +- interrupts : Interrupt specifier for the IOMMU instance + +Optional properties: +- ti,#tlb-entries : Number of entries in the translation look-aside buffer. + Should be either 8 or 32 (default: 32) +- ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing + back a bus error response on MMU faults. + +Example: + /* OMAP3 ISP MMU */ + mmu_isp: mmu@480bd400 { + compatible = "ti,omap2-iommu"; + reg = <0x480bd400 0x80>; + interrupts = <24>; + ti,hwmods = "mmu_isp"; + ti,#tlb-entries = <8>; + }; -- cgit v1.1