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CONFIG_SHMOBILE_IOMMU: IOMMU for Renesas IPMMU/IPMMUI

General informations

The Linux kernel configuration item CONFIG_SHMOBILE_IOMMU:

Help text

Support for Renesas IPMMU/IPMMUI. This option enables remapping of DMA memory accesses from all of the IP blocks on the ICB.

Warning: Drivers (including userspace drivers of UIO devices) of the IP blocks on the ICB *must* use addresses allocated from the IPMMU (iova) for DMA with this option enabled.

If unsure, say N.

Hardware

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