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Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 3bd9fff5c589..b736809102df 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -162,4 +162,15 @@ config TEGRA_IOMMU_SMMU space through the SMMU (System Memory Management Unit) hardware included on Tegra SoCs. +config TEGRA_IOMMU_SMMU_LINEAR + bool "Physical RAM IOVA Liner Mapping Support" + depends on TEGRA_IOMMU_SMMU + default y + help + Enables support for linear mapping between physical address + and IO virtual address for RAM. With this enabled, H/W can + expect virt_to_phys() to work even if it's behined the + IOMMU'able bus. Otherwise DMA API should be used correctly + in device drivers. + endif # IOMMU_SUPPORT |