On Mon, Feb 13, 2017 at 12:00:26PM +0100, Geert Uytterhoeven wrote: > By default, the DMA mask covers only the low 32-bit address space, which > causes SWIOTLB on arm64 to fall back to a bounce buffer for DMA > transfers involving memory outside the 32-bit address space. > > The R-Car DMA controller hardware supports a 40-bit address space, hence > widen the DMA mask to 40 bits to actually make use of this feature. Applied, thanks -- ~Vinod
