2015-05-04 17:16 GMT+09:00 Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>: > Some bootloaders enable FIMD module and configure it as a simple > framebuffer to display boot logo or splash screen before booting the > kernel. Such framebuffer stays enabled until proper kernel driver gets > probbed. Usually it is configured in such a way, that it performs DMA > from the buffer located in system memory. To avoid IOMMU access fault > during system boot, additional identity mapping between system memory > and IO virtual address space must be created when IOMMU driver gets > enabled. > > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> Acked-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
 |