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