Re: [PATCH 1/3] docs: iommu: Documentation for iommu in hi6220 SoC

[Rob Herring]

On Tue, Nov 17, 2015 at 5:57 AM, Chen Feng <puck.chen@xxxxxxxxxxxxx> wrote:
> Documentation for hi6220 iommu driver.

Please use get_maintainers.pl and re-send to correct lists
(devicetree@xxxxxxxxxxxxxxx).

>
> Signed-off-by: Chen Feng <puck.chen@xxxxxxxxxxxxx>
> ---
>  .../bindings/iommu/hisi,hi6220-iommu.txt           | 32 ++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt
>
> diff --git a/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt b/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt
> new file mode 100644
> index 0000000..44f9101
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iommu/hisi,hi6220-iommu.txt
> @@ -0,0 +1,32 @@
> +Hi6220 SoC SMMU Device Driver devicetree document
> +The media system shared the same smmu IP to access DDR memory. And all
> +media IP used the same page table.
> +
> +Below binding describes the system mmu for media system in hi6220 platform
> +
> +Required properties:
> +- compatible: should contain "hisilicon,hi6220-smmu".
> +- reg: A tuple of base address and size of System MMU registers.
> +- clocks: a list of phandle + clock-specifier pairs, one for each entry
> +  in clock-names.
> +- clock-names: should contain:
> +  * "smmu"
> +  * "media-sc"
> +  * "smmu-peri"
> +- interrupts: An interrupt specifier for interrupt signal of System MMU.
> +- #iommu-cells: The iommu-cells should be 0. Because no additional information
> +  needs to be encoded in the specifier.
> +
> +Examples:
> +       iommu@f4210000 {
> +               compatible = "hisilicon,hi6220-smmu";
> +               reg = <0x0 0xf4210000 0x0 0x1000>;
> +               interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
> +               clocks = <&sys_ctrl HI6220_MMU_CLK>,
> +                        <&media_ctrl HI6220_MED_MMU>,
> +                        <&sys_ctrl HI6220_MEDIA_PLL_SRC>;
> +               clock-names = "smmu",
> +                             "media-sc",
> +                             "smmu-peri";
> +               #iommu-cells = <0>;
> +       };
> --
> 1.9.1
>
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