The first 2 patches are the revolutionary change to the device definition
of System MMU for Exynos4 SoCs:
- System MMU ID is removed and a device and its dedicated System MMU are
bound during the machine initialization.
- Only the System MMU platform devices that are bound to their master
devices are initialized. If a System MMU is not initialized, it is no
- Clock gating of System MMU with clkdev.
- Moved System MMU driver to the IOMMU's dedicated directory,
The last 2 patches introduce new IOMMU API implementation for Exynos4
System MMU. They implements all IOMMU API including Ohad's latest
suggestion about MMU fault handling and Joerg's suggestion about
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