diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e73b7c50a13014ba293605167b85dd2a659fe3c5..e163b0223decf5a8bd20578daa8169896e7048e3 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -77,6 +77,7 @@ config IOMMU_DMA
 config FSL_PAMU
 	bool "Freescale IOMMU support"
 	depends on PCI
+	depends on PHYS_64BIT
 	depends on PPC_E500MC || (COMPILE_TEST && PPC)
 	select IOMMU_API
 	select GENERIC_ALLOCATOR