Hello Marek, On 02/14/2017 04:52 AM, Marek Szyprowski wrote: > The main reason for using special configuration of IOMMU domain was the > problem with MFC firmware, which failed to operate properly when placed > at 0 DMA address. Instead of adding custom code for configuring each > variant of IOMMU domain and architecture specific glue code, simply use > what arch code provides and if the DMA base address equals zero, skip > first 128 KiB to keep required alignment. This patch also make the driver > operational on ARM64 architecture, because it no longer depends on ARM > specific DMA-mapping and IOMMU glue code functions. > > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> > --- Reviewed-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx> Tested-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx> Best regards, -- Javier Martinez Canillas Open Source Group Samsung Research America
