1 files changed, 11 insertions, 1 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ff755398ce28..93a61898b259 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -300,9 +300,19 @@ config IOMMU_VMERGE
 config IOMMU_HELPER
         def_bool PPC64
 
+config SWIOTLB
+        bool "SWIOTLB support"
+        default n
+        select IOMMU_HELPER
+        ---help---
+          Support for IO bounce buffering for systems without an IOMMU.
+          This allows us to DMA to the full physical address space on
+          platforms where the size of a physical address is larger
+          than the bus address.  Not all platforms support this.
+
 config PPC_NEED_DMA_SYNC_OPS
         def_bool y
-        depends on NOT_COHERENT_CACHE
+        depends on (NOT_COHERENT_CACHE || SWIOTLB)
 
 config HOTPLUG_CPU
         bool "Support for enabling/disabling CPUs"