diff options
| author | Florian Vaussard <florian.vaussard@epfl.ch> | 2014-03-01 00:42:35 +0400 |
|---|---|---|
| committer | Joerg Roedel <joro@8bytes.org> | 2014-03-04 20:01:55 +0400 |
| commit | a8689f65de5a8c3e47bf29c2550dfebe0744e077 (patch) | |
| tree | b783d174ff647254ade15bda0000a3514c84879e /Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt | |
| parent | 90e569c4ca727b59ba8f82a9cd5e2f43462bbc3b (diff) | |
| download | linux-a8689f65de5a8c3e47bf29c2550dfebe0744e077.tar.xz | |
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 <florian.vaussard@epfl.ch>
[s-anna@ti.com: split bindings document, add dra7 and bus error back]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt | 26 |
1 files changed, 26 insertions, 0 deletions
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 000000000000..42531dc387aa --- /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>; + }; |