Hi, Stefan
Thanks a lot for a very useful info. I'll ask hardware designers to be in contact with AMCC. Did you have a chance to test ECC enabled DDR2 on Canyonlands ?
Thanks.
Felix.
Stefan Roese wrote:
Hi Felix,
On Monday 30 June 2008, Felix Radensky wrote:
I will soon have to port U-Boot to a custom board based on AMCC 460EX CPU. This board should be very close to Canyonlands evaluation board, but board designers decided to use DDR1 instead of DDR2 present on Canyonlands.
Looking at U-Boot 1.3.3 code, I can see that DDR1 support for 460EX is available in cpu/ppc4xx/cp44x_spd_ddr2.c. My question is - was DDR1 support ever tested on 460EX.
No, not from me while porting to Canyonlands. Could be that AMCC tested it on their 460EX Maple reference design. Please contact AMCC on this.
As you already noticed, cpu/ppc4xx/cp44x_spd_ddr2.c has some DDR1 support. But I'm not sure if this will work "right out of the box". Could be that some changes are needed.
Another question is - are there DDR1 DIMMs that can be used on Canyonlands ?
No. This is not possible.
Best regards, Stefan
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