23.04.2021 19:32, Thierry Reding пишет: > Note that there will be no new releases of the bootloader for earlier > devices, so adding support for these new DT bindings will not be > practical. The bootloaders on those devices do pass information about > the active framebuffer via the kernel command-line, so we may want to > add code to create reserved regions in the IOMMU based on that. Since this change requires a bootloader update anyways, why it's not possible to fix the bootloader properly, making it to stop all the DMA activity before jumping into kernel?