[U-Boot] Malformed ARP packets
Jerry Van Baren
gerald.vanbaren at ge.com
Fri Sep 19 13:57:42 CEST 2008
Remi Lefevre wrote:
> Thank you very much for your clues as I'm stuck on this for almost a week.
>
> [snip]
>> Is this DIMM memory sticks with using SPD configuration or are the SDRAM
>> chips soldered to the board?
>
> They are soldered.
Yup, thought so. ;-)
> My SDRAM is a Micron MT48LC16M16A2. My init sequence is exactly the same as
> the one in "freescale/mpc8266ads/mpc8266ads.c" or "sacsng/sacsng.c" that use
> MT48LC8M16A2 , but I checked it anyway.
The SDRAM init sequence is odd, but hard to get wrong because it is
invariant and there are plenty of working examples.
> My PSDMR values have been given by another product using exactly the same
> board and same HWCR configuration (PLD). But I will check them again.
That is the critical issue: the PSDMR values. If all else fails, read
the part number off a chip that is on your board and download the
datasheet for *that* *exact* part number. Sometimes manufacturers
upgrade their parts or hardware makes a "compatible" substitution and
the timing is different.
[snip]
> Thanks,
> Rémi
You are welcome,
gvb
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