[U-Boot] Incorrect Chip ID for Micrel Nand Flash on AT91SAM9260 board

Eric BENARD ebenard at free.fr
Fri Oct 17 11:52:43 CEST 2008


Hi Kevin,

Kevin Greer a écrit :
> I am working with a custom board based on the Atmel at91sam9260 arm
> processor with a Micrel 2 Gb Nand flash chip (mt29f2g08aadwp).  However,
> when u-boot starts it reports the wrong Chip ID (0x01 instead of 0xda) and
> then I start getting Bad eraseblock messages during the rest of the boot
> process.  The strange thing is that when I debug the board using a JTAG it
> gets the correct Chip ID and boots properly.  I am hoping that someone else
> might have run into a similar problem, or might have an idea of how to
> proceed.
> 
try sending a reset command to the nand before getting the ID, this 
should solve the problem.

Eric


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