On 18/06/2012 16:23, Marek Vasut wrote:
Dear Fabio Estevam,
Hi Marek,
On Thu, May 31, 2012 at 3:45 PM, Marek Vasut marex@denx.de wrote:
Call this or similar in your spl_boot.c to adjust the DRAM configuration. Actually I think even the following value should fix your problem:
void mx28_adjust_memory_params(uint32_t *dram_vals) { dram_vals[0x74 >> 2] = 0x0f02010a; }
I finally had a chance to try this and my mx28evk can boot again with your patch + the code above.
How do we handle this? Would you send a v2 with this additional code or should I do it myself after your original patch in this thread gets applied?
Stefano, can you please apply this? So Fabio can apply his on top of it?
I do it.
Also, please explain to the mortal folks what 'dram_vals[0x74 >> 2] = 0x0f02010a;' means.
Well, check that particular register (memory configuration register at +0x74 offset) in the datasheet. It's basically adjusting the number of enabled address row and columns.
It is not something very trivial to figure out :-)
It actually is, see above ;-)
I see, but I will never apply a patch programmed in hexadecimal instead of plain C ;-)
Stefano