[LinuxBIOS] alix1c for v3 update

[Carl-Daniel Hailfinger]

On 27.11.2007 17:45, Corey Osgood wrote:
> ron minnich wrote:
>   
>> On Nov 27, 2007 8:24 AM, Corey Osgood <corey.osgood at gmail.com> wrote:
>>
>>   
>>     
>>>> +     [SPD_MIN_CYCLE_TIME_AT_CAS_MAX] = 10, /* A guess for the tRAC value */
>>>>
>>>>       
>>>>         
>>> This looks like it's wrong, a normal DDR400 dimm is 0x50 or so.
>>>
>>>     
>>>       
>>>> +     [SPD_MODULE_ATTRIBUTES] = 0xff, /* FIXME later when we figure out. */
>>>>
>>>>       
>>>>         
>>> 0x20 for an unbuffered dimm, 0x26 for registered.
>>>     
>>>       
>> So I'm going to ask a favor. I am going from the data sheets and could
>> not find this info. Can you look and tell me? I got lost in the
>> numbers ...
>>   
>>     
>
> I cheated ;) Here's a micron datasheet for a DDR400 CL3 Dimm:
> http://download.micron.com/pdf/datasheets/modules/ddr/DDA9C16_32_64x72AG.pdf
>
> And what should be known as the best idiot's guide to SPD out there:
> http://www.simmtester.com/page/news/showpubnews.asp?num=101
>
> I have the JEDEC datasheet on this, but I have so damn many JEDEC
> datasheets I simply can't figure out which one it is. The
> "SPD_ACCEPTABLE_CAS_LATENCIES" also should be 0x50 (5ns).
>   

Can you add these links to the wiki, probably to a page about SPD or RAM?

Regards,
Carl-Daniel