[PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings
From: Suman Anna <hidden>
Date: 2014-02-13 18:15:34
Also in:
linux-arm-kernel, linux-iommu, linux-omap
Subsystem:
iommu subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Joerg Roedel, Will Deacon, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2014-02-26 · Re: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings · Suman Anna <hidden>
- 2014-02-26 · Re: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings · Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- 2014-02-26 · Re: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings · Suman Anna <hidden>
- 2014-02-26 · Re: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings · Suman Anna <hidden>
- 2014-02-26 · Re: [PATCHv2 03/16] Documentation: dt: add OMAP iommu bindings · Laurent Pinchart <laurent.pinchart@ideasonboard.com>
From: Florian Vaussard <redacted> 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 <redacted> [s-anna-l0cyMroinI0@public.gmane.org: split bindings document, add dra7 and bus error back] Signed-off-by: Suman Anna <redacted> --- .../devicetree/bindings/iommu/ti,omap-iommu.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
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..116492d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt@@ -0,0 +1,28 @@ +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 +- dma-window : IOVA start address and length + +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>; + dma-window = <0 0xfffff000>; + };
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1.8.5.3