u-boot/drivers/iommu/Kconfig
Mark Kettenis 785cfde5b3 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>
2021-10-31 08:46:44 -04:00

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#
# IOMMU devices
#
menu "IOMMU device drivers"
config IOMMU
bool "Enable Driver Model for IOMMU drivers"
depends on DM
help
Enable driver model for IOMMU devices. An IOMMU maps device
virtiual memory addresses to physical addresses. Devices
that sit behind an IOMMU can typically only access physical
memory if the IOMMU has been programmed to allow access to
that memory.
config APPLE_DART
bool "Apple DART support"
depends on IOMMU && ARCH_APPLE
default y
help
Enable support for the DART on Apple SoCs. The DART is Apple's
IOMMU implementation. The driver performs the necessary
configuration to put the DART into bypass mode such that it can
be used transparently by U-Boot.
endmenu