hi all
I am going through the SPD DRAM setup for my mpc8548 board (using DDR2) - when I run uboot I get an error saying:
Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] should not be set at the same time.
As far as I could tell, neither of these two settings are within my control:
RD_EN is set by "populate_memctl_options" according to "spd->dimm_type" (In my case it is a Mini-RDIMM )
2T_EN is set in ddr/options.c and is hard coded as popts->twoT_en = 1; In U-boot1.2 i found 2T timing is dependant on the CPU version, Should this still be the case? in spd)sdram.c:
if (pvr != PVR_85xx_REV1) { #if defined(CONFIG_DDR_2T_TIMING) /* * Enable 2T timing by setting sdram_cfg[16]. */ sdram_cfg |= 0x8000; /* 2T_EN */ #endif }
What should i do to get rid of this error? My initial efforts show by hacking RD_en = 0 is the only way to get my board to boot. but this roes not feel like the way to go. I would appreciate any help. thanks Hendrik