On Thursday 23 October 2008, Felix Radensky wrote:
I've changed
if ((attribute & 0x02) == 0x00)
to be
if (((attribute & 0x02) == 0x00) && (attribute != 0x04))
Why did you change it this way? Which DDR2 module are you using? And what's the value of SPD register 21?
My change causes the code to go into else branch and set SDRAM_MCOPT1_RDEN (registered) bit. I'm using Micron 512M registered SODIMM. The value of SPD register 21 is 0x4. The full SPD spec is here: http://www.micron.com/products/spddetail.aspx?part=MT9HTF6472RHY-667F1
Thanks.
Ayman, which module are you using and what's your reg 21 value? Does anybody have the time to dig into those specs to find a common solution?
Thanks.
Best regards, Stefan
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