I've designed the SODIMM module based on omap3530 CBC with Micron
MT29C2G24MAKLACG-6 IT memory.
memory has the following configuration (the same as EBVbeagle):
NAND: x16 2Gb
LPDRAM: x32 1Gb
This is the first power up of the module and I use MMC card from the
EBVBeagle which 100% works. I have the following messages on the
Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24)
I found that "Unsupported Chip" means that NAND was not found.
Actually the Manufacture ID and Device ID were read as zeros.
Can anybody suggest if it is a software problem or the POP is soldered bad?
I made a little experiment: changed TEXT_BASE mapping from SRAM to
DRAM in the file "board/omap3530beagle/config.mk". With this
configuration MLO does not start.
Any ideas are appreciated.
Sounds lik the POP is not correctly soldered onto the processor.
I found in my schematic that the pin pop_aa10_af12 at CBC package
which is feedthrough is not connected to GPMC_CLE line. May it had
affected the NAND flash is not found?
Do you mean the pin AF12 (bottom ball) must be connected to the pin K2
You need the CLE lead for the NAND to work. I have not looked closely at the CBC package. I don’t really get into that package.
Great thank you for your advice!
I admit it is my fault that I occasionally missed CLE for the NAND.. I
could connect GMPC_CLE line to the POP CLE lead with a microwire. My
module seems to be alive!
Texas Instruments X-Loader 1.41
Starting on with MMC
Reading boot sector
188600 Bytes Read from MMC
Starting OS Bootloader from MMC...
U-Boot 2009.11-rc1 (Jan 08 2010 - 21:19:52)
OMAP3530-GP ES3.1, CPU-OPP2 L3-165MHz
OMAP3 Beagle board + LPDDR/NAND
DRAM: 128 MB
NAND: 256 MiB
*** Warning - bad CRC or NAND, using default environment
Board revision Ax/Bx
Die ID #2f5a00040000000004032d4615013006
Hit any key to stop autoboot: 0