Please forget the last phrase... On Mon, Oct 26, 2009 at 5:01 PM, Werner Nedel <wmne...@gmail.com> wrote:
> Sorry for this big mistake and wasting your time :-( > > There's a bit between rtt and ocd, that don't match with definition in > jedec ddr2 sdram specification. > > On Sat, Oct 24, 2009 at 12:38 PM, Kumar Gala <ga...@kernel.crashing.org>wrote: > >> 5 is correct. >> >> Here's an example: >> >> rtt = 0x3: >> esd_mode should be = 0x44: >> >> esdmode = (0 >> | ((rtt & 0x4) << 7) /* rtt field is split */ >> | ((rtt & 0x2) << 5) /* rtt field is split */ >> | ((rtt & 0x1) << 2) /* rtt field is split */ >> ); >> >> esdmode = (0 >> | ((0x3 & 0x4) << 7) /* rtt field is split */ >> | ((0x3 & 0x2) << 5) /* rtt field is split */ >> | ((0x3 & 0x1) << 2) /* rtt field is split */ >> ); >> >> esdmode = (0 >> | ((0) << 7) /* rtt field is split */ >> | ((0x2) << 5) /* rtt field is split */ >> | ((0x1) << 2) /* rtt field is split */ >> ); >> >> esdmode = (0 >> | (0x40) /* rtt field is split */ >> | (0x4) /* rtt field is split */ >> ); >> >> esdmode = (0x44); >> >> - k >> >> >> >> On Oct 22, 2009, at 9:53 AM, Werner Nedel wrote: >> >> Sorry again, >>> >>> and with DDR2. >>> >>> On Thu, Oct 22, 2009 at 11:42 AM, Werner Nedel <wmne...@gmail.com> >>> wrote: >>> >>> Hi, >>>> >>>> sorry about that. I'm working on a MPC8548 platform and using the >>>> mpc8xxx >>>> common code for DDR configuration. >>>> >>>> >>>> On Thu, Oct 22, 2009 at 11:36 AM, Kumar Gala <ga...@kernel.crashing.org >>>> >wrote: >>>> >>>> >>>>> On Oct 22, 2009, at 6:48 AM, Werner Nedel wrote: >>>>> >>>>> Hi, >>>>> >>>>>> >>>>>> I was looking the ctrl_regs.c file at the last release of u-boot, >>>>>> specifically at sdram_mode register, and checking at AN3369.pdf I >>>>>> think >>>>>> that >>>>>> Rtt bit position might be wrong. At the code, the bit shifting is 5, >>>>>> but >>>>>> shouldn't be 6? I think that it overwrites AL register. >>>>>> >>>>>> >>>>> Can you be more specific about what arch/platform you are taking about. >>>>> >>>>> - k >>>>> >>>>> >>>> >>>> _______________________________________________ >>> U-Boot mailing list >>> U-Boot@lists.denx.de >>> http://lists.denx.de/mailman/listinfo/u-boot >>> >> >> >
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