https://bugzilla.kernel.org/show_bug.cgi?id=194761
--- Comment #59 from Marek Olšák (maraeo@gmail.com) --- So it looks like 64-bit Oland needs the P4 config and 128-bit Oland needs the P2 config. Maybe the MC_ARB_RAMCFG patch will help with other SI chips if it doesn't help Oland.