Messages in this thread | | | From | Rob Herring <> | Date | Tue, 17 Nov 2015 11:36:11 -0600 | Subject | Re: [PATCH 1/3] docs: iommu: Documentation for iommu in hi6220 SoC |
| |
On Tue, Nov 17, 2015 at 5:57 AM, Chen Feng <puck.chen@hisilicon.com> wrote: > Documentation for hi6220 iommu driver.
Please use get_maintainers.pl and re-send to correct lists (devicetree@vger.kernel.org).
> > Signed-off-by: Chen Feng <puck.chen@hisilicon.com> > --- > .../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 >
| |