On 27 July 2015 at 11:45, Stephen Warren <swar...@wwwdotorg.org> wrote: > From: Thierry Reding <tred...@nvidia.com> > > Most peripherals on Tegra can do DMA only to the lower 32-bit > address space, even on 64-bit SoCs. This limitation is > typically overcome by the use of an IOMMU. Since the IOMMU is > not entirely trivial to set up and serves no other purpose > (I/O protection, ...) in U-Boot, restrict 64-bit Tegra SoCs to > the lower 32-bit address space for RAM. This ensures that the > physical addresses of buffers that are programmed into the > various DMA engines are valid and don't alias to lower addresses. > > Signed-off-by: Thierry Reding <tred...@nvidia.com> > Signed-off-by: Tom Warren <twar...@nvidia.com> > Signed-off-by: Stephen Warren <swar...@nvidia.com> > --- > These 3 patches are pre-requisites for T210 support (either compile-time > or run-time) but don't seem to have been sent to the mailing lists > recently. > > arch/arm/mach-tegra/board2.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+)
Reviewed-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
