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AM335x NAND not found

 

hello,

i'm using the AM335x EVM (with the LCD).

i put the SW as describe here:

http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User's_Guide#Boot_Switch_Settings

and i see on the tera-term (terminal) only CCCCCCCCCCCC...

i change it to SD and then i get the below output. as you can see the NAND is not found.

what can i do?by the SW4 is ON in 7 only. SW3 is 1 ON only (for SD)

 

U-Boot SPL 2011.09 (Apr 08 2012 - 18:29:14) Texas Instruments Revision detection unimplemented OMAP SD/MMC: 0 reading u-boot.img reading u-boot.img

U-Boot 2011.09 (Apr 08 2012 - 18:25:03)

I2C:   ready

DRAM:  256 MiB

WARNING: Caches not enabled

Found a daughter card connected

NAND:  HW ECC Hamming Code selected

No NAND device found!!!

0 MiB

MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1

*** Warning - readenv() failed, using default environment

Net:   cpsw

Hit any key to stop autoboot:  0

U-Boot#