On Tuesday 25 March 2014 16:56:41 Phil Edworthy wrote: > + /* Map all possible DDR as inbound ranges */ > + dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x80000000 > + 0x43000000 1 0x80000000 1 0x80000000 0 0x80000000>; Typo: 0x43000000 should be 0x42000000 I guess. Since you control the mapping, I wonder if you could also do this as dma-ranges = <0x42000000 0 0x00000000 0 0x40000000 0 0x80000000 0x43000000 0 0x80000000 1 0x80000000 0 0x80000000>; i.e. map all the RAM into PCI bus addresses below the 32-bit boundary. This would be really nice from the perspective that now all PCI devices could access all of RAM without using an IOMMU or the relying on 64-bit master capability. The downside of this is that you'd probably need a custom dma_map_ops wrapper. Arnd _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-arm-kernel