On 3/12/19 3:33 PM, Westergreen, Dalon wrote: > On Tue, 2019-03-12 at 11:46 +0100, Marek Vasut wrote: >> On 3/12/19 9:31 AM, Ley Foon Tan wrote: >>> Add board_get_usable_ram_top() function. Limit maximum usable >>> ram top to 2GB. >> >> Why ? There are ARM64 platforms which can access the entire DRAM range >> just fine, what's the problem ? >> > > The issue is the gap in memory between 2GB and 4GB. There is some trickery > you can use to gain access to the memory in that range, but in general, you > dont have access. I believe just setting the banks up in the dts will > resolve this.
E.g. the R8A779{5..9}* platforms also have gaps in memory and it all works fine . So unless there's some other specialty, there should be no problem. -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot