On 02/14/2012 09:05 AM, Ran Shalit wrote:
Hello,
I am using Micron Nand MT29F1G08ABC , with OMAP-L138 board, and I write the Nand with the following sequence in U-Boot:
- erase block
2, read complete page change the first byte and then write back the complete page (2048 bytes) 3, read complete page change the next byte and then write back the complete page (2048 bytes) 4. back to 3. until page is written completely
What I see is that after about ~1200 bytes, bytes which are after the last offset such as 1400 and 1500 offset are not 0xff but instead one of the bits is zero (such as 0xbf) What Do you think might be the problem here ...
Read the manual for your NAND chip -- this is almost certainly violating the chip's specs. There's a limit on the number of partial programmings that you can do to a page in between erases. 1, 4, and 8 are common limits. 2048 is not.
-Scott