iommu: Add Apple DART driver
The DART is an IOMMU that is used on Apple's M1 SoC. This driver
configures the DART such that it operates in bypass mode which is
enough to support DMA for the USB3 ports integrated on the SoC.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 293e3e3..b4808d4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -931,6 +931,7 @@
select DM_SERIAL
select DM_USB
select DM_VIDEO
+ select IOMMU
select LINUX_KERNEL_IMAGE_HEADER
select OF_CONTROL
select OF_BOARD