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
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