Hi Geert, On Thu, Oct 27, 2016 at 4:04 PM, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote: > Hi Magnus, > > On Thu, Oct 27, 2016 at 8:52 AM, Magnus Damm <magnus.damm@xxxxxxxxx> wrote: >> In particular, not so much the DU device (this patch) but more the VSP >> instances. The reason for that is that VSP devices can only perform >> 32-bit bus mastering without IOMMU. I believe next step for all this >> would be to enable all on-board memory on r8a7796 Salvator-x, but I >> think Geert is working on that. > > Actually 64-bit memory is already enabled on r8a7796/salvator-x, as U-Boot > (all firmware versions I've seen) silently adds the missing memory chunks > to the DTB. > > The same is true on r8a7795/salvator-x with recent firmware (e.g. v2.12.0). Ok, so we should figure out a reasonable policy how to handle this in a good way. Shall we describe all the memory in the DTS file for consistency? Or no memory at all? Describing some memory seems a bit like a strange middle ground in my opinion. Cheers, / magnus
