[LinuxBIOS] Opteron memclk speed/loading fix
YhLu
YhLu at tyan.com
Fri May 6 19:04:47 CEST 2005
That's right.
Some MB can work with 4G 4 ranks DIMM in 400Mhz in 4 slots.
YH
> -----Original Message-----
> From: ebiederman at lnxi.com [mailto:ebiederman at lnxi.com]
> Sent: Friday, May 06, 2005 7:55 AM
> To: Tao Liu
> Cc: YhLu; LinuxBIOS
> Subject: Re: [LinuxBIOS] Opteron memclk speed/loading fix
>
> Tao Liu <liutao1980 at gmail.com> writes:
>
> > Hello,
> >
> > we are building an 1 cpu 8 dimm board and experienced this problem,
> > and accroding to amd's amd64 bios developers' guide memory speed
> > downgrade should also be applyed to the following 4dimm
> configurations:
> >
> > (1) 4 dimm with more than 2 double-rank dimms, downgrade to 333MHz
> > (2) more than 1 double-rank dimm for single channel, downgrade to
> > 333MHz
>
> In principle I agree with this. However those are guidelines
> and it stated that the actual details may very per motherboard.
>
> So for merging I would request we have a generic function
> that performs this logic, and have the generic call in
> raminit.c make a motherboard specific call. By default that
> motherboard specific call would simply call the default
> generic method, but a motherboard that has better memory
> stability could override this.
>
> Eric
>
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