On Tue, Aug 25, 2026 at 11:42:46AM -0500, Anirudh Srinivasan wrote: > Adds a basic driver for IOMMUs that conform to the RISC-V IOMMU > specification. This driver sets up the IOMMU in bare mode so that > peripherals requiring DMA in U-Boot can function. > > Signed-off-by: Anirudh Srinivasan <[email protected]> > --- > Changes in v2: > - Changed DDTP read timeout to 3s from 10s > - Link to v1: > https://patch.msgid.link/[email protected] > --- > Hi, > > This is a pre-requisite for U-Boot on Tenstorrent Atlantis. On this > platform, the IOMMU comes up in Off mode at boot, so this is needed for > SD and NVME boot to work in U-Boot. > --- > MAINTAINERS | 1 + > drivers/iommu/Kconfig | 8 +++++ > drivers/iommu/Makefile | 1 + > drivers/iommu/riscv_iommu.c | 82 > +++++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 92 insertions(+)
Reviewed-by: Leo Yu-Chi Liang <[email protected]>
