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AM335X: No logs on console



custom board we loaded MLO but we are not getting any message on console.But when we remove the card its giving CCCC .But when we insert sdcard into the sd slot .Not coming CC means .Card detected right? But we are not getting any log console.but same card we inserted on evm we got logs .

                                                                |  Cannot open /dev/ttyUSB1!  |
U-Boot SPL 2016.05 (Jul 28 2016 - 14:59:37)                          |                             |
Trying to boot from MMC1                                             +-----------------------------+
reading args                                                                 
spl_load_image_fat_os: error reading image args, err - -1                    
reading u-boot.img                      
spl_load_image_fat: error reading image u-boot.img, err - -1
Failed to mount ext2 filesystem...      
spl_load_image_ext_os: ext4fs mount err - 0
Failed to mount ext2 filesystem...      
spl_load_image_ext: ext4fs mount err - 0

Actually we are using latest SDK V3.00.00.04.In that u-boot-2016.05.

But on custom board we are not getting any log on console.But we are using same sdcard interface and ddr and uart0 .compare to evm .so whats the problem can you guide me asap.

SDK 06.0 Contains u-boot-2013.01.01.its booting whats the reason u-boot 2016 not booting .I need help .please asap.

But same custom board booting when we are using u-boot-2013.01.01.Then hw fine right .because its booting given some logs.by using u-boot-2016.05 we are net getting any logs on console.