[PATCH 4.5/20] Docs: dt: document ARM SMMUv3 generic binding usage
From: Robin Murphy <hidden>
Date: 2016-09-09 18:17:48
Also in:
linux-arm-kernel, linux-iommu
Subsystem:
arm smmu drivers, iommu subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Will Deacon, Joerg Roedel, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2016-09-12 · Re: [PATCH 4.5/20] Docs: dt: document ARM SMMUv3 generic binding usage · Will Deacon <hidden>
Now that we've ratified SMMUv3's use of the generic binding, document it. CC: Rob Herring <redacted> CC: Mark Rutland <redacted> Signed-off-by: Robin Murphy <redacted> --- Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt
index 7b94c88cf2ee..69a694f70bea 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt@@ -27,6 +27,12 @@ the PCIe specification. * "cmdq-sync" - CMD_SYNC complete * "gerror" - Global Error activated +- #iommu-cells : See the generic IOMMU binding described in + devicetree/bindings/iommu/iommu.txt + for details. For SMMUv3, must be 1, with each cell + describing a single stream ID. All possible stream + ID which a device may emit must be described. + ** SMMUv3 optional properties: - dma-coherent : Present if DMA operations made by the SMMU (page
@@ -54,6 +60,6 @@ the PCIe specification. <GIC_SPI 79 IRQ_TYPE_EDGE_RISING>; interrupt-names = "eventq", "priq", "cmdq-sync", "gerror"; dma-coherent; - #iommu-cells = <0>; + #iommu-cells = <1>; msi-parent = <&its 0xff0000>; };
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2.8.1.dirty