On Thu, Jul 06, 2017 at 03:07:05PM +0530, Vivek Gautam wrote: > qcom,msm8996-smmu-v2 is an arm,smmu-v2 implementation with > specific clock and power requirements. This smmu core is used > with multiple masters on msm8996, viz. mdss, video, etc. > Add bindings for the same. > > Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/iommu/arm,smmu.txt | 18 ++++++++++++++++++ > drivers/iommu/arm-smmu.c | 13 +++++++++++++ > 2 files changed, 31 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt > index 00331752d355..5d8e79775fae 100644 > --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt > +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt > @@ -17,6 +17,7 @@ conditions. > "arm,mmu-401" > "arm,mmu-500" > "cavium,smmu-v2" > + "qcom,msm8996-smmu-v2" > > depending on the particular implementation and/or the > version of the architecture implemented. > @@ -74,11 +75,16 @@ conditions. > - clock-names: Should be "tcu" and "iface" for "arm,mmu-400", > "arm,mmu-401" and "arm,mmu-500" > > + Should be "bus", and "iface" for "qcom,msm8996-smmu-v2" > + implementation. > + > "tcu" clock is required for smmu's register access using the > programming interface and ptw for downstream bus access. This > clock is also used for access to the TBU connected to the > master locally. Sometimes however, TBU is clocked along with > the master. > + "bus" clock for "qcom,msm8996-smmu-v2" is requierd for downstream s/requierd/required/ > + bus access and for the smmu ptw. > > "iface" clock is required to access the TCU's programming > interface, apart from the "tcu" clock. > @@ -161,3 +167,15 @@ conditions. > iommu-map = <0 &smmu3 0 0x400>; > ... > }; > + > + /* Qcom's arm,smmu-v2 implementation for msm8996 */ > + smmu4: iommu { > + compatible = "qcom,msm8996-smmu-v2"; No registers? > + ... > + #iommu-cells = <1>; > + power-domains = <&mmcc MDSS_GDSC>; > + > + clocks = <&mmcc SMMU_MDP_AXI_CLK>, > + <&mmcc SMMU_MDP_AHB_CLK>; > + clock-names = "bus", "iface"; > + }; -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html