Hi there we've been having lots of issues with our nand chips lately, ecc failures during boot, nand chips failing to work (reporting wrong id), seeming to read correctly but the data read is sort of crap and doesn't run as intended. Its like devices that have been just sitting around die after a while for no real reason. We are trying to narrow down the possible causes but we still generally are confused as hell.
I'm trying to figure out what the bus settings were set to just to make sure its not possible that is causing any damage/data corruption
Looking at the AISGen, pll0 is set to
cpu 300mhz
sdram 25.mhz
emac 50mhz
pll1
ddr = 300mhz
cs3 = 0x3ffffffc // 40 ns strobe???
in eboot we change the speed of plldiv3
pPLLC0Regs->PLLDIV3 = 0x8002 // have no idea what this means, div3 and ratio of 2
any help would be great thanks
