This is a bitmap that indicates which HardWare Accelerators(HWA) are supported on Tegra30 SoC.
Signed-off-by: Hiroshi Doyu <[email protected]> --- Documentation/devicetree/bindings/iommu/nvidia,tegra30-smmu.txt | 6 +++++- arch/arm/boot/dts/tegra30.dtsi | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iommu/nvidia,tegra30-smmu.txt b/Documentation/devicetree/bindings/iommu/nvidia,tegra30-smmu.txt index 89fb543..6be51f6 100644 --- a/Documentation/devicetree/bindings/iommu/nvidia,tegra30-smmu.txt +++ b/Documentation/devicetree/bindings/iommu/nvidia,tegra30-smmu.txt @@ -8,14 +8,18 @@ Required properties: - nvidia,#asids : # of ASIDs - dma-window : IOVA start address and length. - nvidia,ahb : phandle to the ahb bus connected to SMMU. +- nvidia,swgroups: A bit map of supported HardWare Accelerators(HWA). + Each bit represents one sgroup. The assignments may be found in header + file <dt-bindings/iommu/tegra-swgid.h>. Example: - smmu { + iommu { compatible = "nvidia,tegra30-smmu"; reg = <0x7000f010 0x02c 0x7000f1f0 0x010 0x7000f228 0x05c>; nvidia,#asids = <4>; /* # of ASIDs */ dma-window = <0 0x40000000>; /* IOVA start & length */ + nvidia,swgroups = <0x00000000 0x000779ff>; nvidia,ahb = <&ahb>; }; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index d8783f0..14ec3f9 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -461,6 +461,7 @@ 0x7000f228 0x05c>; nvidia,#asids = <4>; /* # of ASIDs */ dma-window = <0 0x40000000>; /* IOVA start & length */ + nvidia,swgroups = <0x00000000 0x000779ff>; nvidia,ahb = <&ahb>; }; -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
