Am Montag, 27. Oktober 2014, 20:37:27 schrieb Daniel Kurtz:
> Add binding documentation for Rockchip IOMMU.
>
> Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx>
> Signed-off-by: Simon Xue <xxm@xxxxxxxxxxxxxx>
Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
> ---
> .../devicetree/bindings/iommu/rockchip,iommu.txt | 26
> ++++++++++++++++++++++ 1 file changed, 26 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
>
> diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt new file mode
> 100644
> index 0000000..9a55ac3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
> @@ -0,0 +1,26 @@
> +Rockchip IOMMU
> +==============
> +
> +A Rockchip DRM iommu translates io virtual addresses to physical addresses
> for +its master device. Each slave device is bound to a single master
> device, and +shares its clocks, power domain and irq.
> +
> +Required properties:
> +- compatible : Should be "rockchip,iommu"
> +- reg : Address space for the configuration registers
> +- interrupts : Interrupt specifier for the IOMMU instance
> +- interrupt-names : Interrupt name for the IOMMU instance
> +- #iommu-cells : Should be <0>. This indicates the iommu is a
> + "single-master" device, and needs no additional
> information + to associate with its master device. See:
> + Documentation/devicetree/bindings/iommu/iommu.txt
> +
> +Example:
> +
> + vopl_mmu: iommu@ff940300 {
> + compatible = "rockchip,iommu";
> + reg = <0xff940300 0x100>;
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "vopl_mmu";
> + #iommu-cells = <0>;
> + };
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