Hello!

 I beg for your help in the following situaton. I work with custom board with 
TI DM355 and 8Gbx8 Micron NAND chip . I want to write UBL, U-boot and Kernel  
in it. At first I've done all the appropriate steps on DM355DVEVM, which has  a 
dual-bank nand chip on it.  Both banks are being initialized in dm355evm.cfg 
script. And the chip on my custom board has only one memory bank.

 At the first time I've started OpenOCD with dm355evm.cfg file without any 
changes. But to my surprise it had found both nand banks in my custom board 
with single-bank NAND chip. I've saved several nand dumps and found that they 
contain the same data. But it is not the main problem. The NAND flash is 
available for reading only. OpenOCD performes "nand erase" and "nand write" 
commands with messages of success, but nand dumps does not show any changes.

 I've deleted the string from dm355evm.cfg, which initialized the second NAND 
bank, but it did not help. The flash memory is available for reading only.

 So my questions are:

 1. Am I right with my assumption, that OpenOCD found two NAND banks on my 
custom board just like the mirrors of actual single bank?
 2. Does OpenOCD anyhow check the nand device settings from initial scripts or 
work with them "as is"?
 3. How can I make the custom board NAND chip available for erasing and writing?


                                                                                                        
 Thank you in advance.
                                                                                                               
 MS
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