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Groups > linux.kernel > #1247583
| From | Zhen Lei <thunder.leizhen@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 5/5] iommu/arm-smmu: describe the limitation of #iommu-cells |
| Date | 2015-10-15 10:50 +0200 |
| Message-ID | <qjMoy-1d8-33@gated-at.bofh.it> (permalink) |
| References | <qjMeR-11S-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Only support #iommu-cells = <1>. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> --- Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt index 947863a..4845d44 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt @@ -5,6 +5,12 @@ revisions, replacing the MMIO register interface with in-memory command and event queues and adding support for the ATS and PRI components of the PCIe specification. +Please read ./iommu.txt first, here list something special as below: + +** SMMUv3 limited properties: +- #iommu-cells : fixed to <1>. The pci root device is a special case, + its IDs can be omitted in dts, seems #iommu-cells = <0>. + ** SMMUv3 required properties: - compatible : Should include: -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH v4 0/5] iommu/arm-smmu: add support for non-pci devices Zhen Lei <thunder.leizhen@huawei.com> - 2015-10-15 10:50 +0200 [PATCH v4 1/5] iommu/arm-smmu: to support probe deferral Zhen Lei <thunder.leizhen@huawei.com> - 2015-10-15 10:50 +0200 [PATCH v4 3/5] iommu/arm-smmu: add support for non-pci devices Zhen Lei <thunder.leizhen@huawei.com> - 2015-10-15 10:50 +0200 [PATCH v4 5/5] iommu/arm-smmu: describe the limitation of #iommu-cells Zhen Lei <thunder.leizhen@huawei.com> - 2015-10-15 10:50 +0200
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