1) I don't know the current status about this soc.
It seems nobody answer something related with memory performance on iop34x.
I am not sure these is right place to discuss about iop34x memory performance.
2) I dumpped the setting of DMCU: DDR2 memory controller
SDCR0 = 0x42242391
SDCR1 = 0x142146B7
SBSR = 0x20000A04
DMPTCR = 0x111110
DMPCR = 0x00
The test DIMM DDR2 device is 64bit data width.
In theory, the peak performance shoud be about 4G bytes/s.
But I just get the test result by ramspeed. 160Mbytes/s
the customized test tool has 110Mbytes/s.