Booting failure happened sometimes while repeating Power ON/OFF test. When the booting failure happened, BOOT_MODE is read serial download by DDR Stress Tool. However, actually BOOT_MODE is internal boot by boot strap. The booting device is NAND.
Hi sj_ahn
for "repeating Power ON/OFF test" it is necessary to verify that after power off
all power supplies were fully discharged, then turn power on. Otherwise this may violate
power up sequence.
Best regards
igor