Hi,
On 02/13/2014 07:15 PM, Suman Anna wrote:
> From: Florian Vaussard <florian.vaussard@xxxxxxx>
>
> 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@xxxxxxx>
> [s-anna@xxxxxx: split bindings document, add dra7 and bus error back]
> Signed-off-by: Suman Anna <s-anna@xxxxxx>
> ---
> .../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>;
> + };
>
Any comments on this binding?
Regards,
Florian
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