Thanks Gerald. You changed C24 to a 2.2uF capacitor to improve the reset signal but we don't think that fix the issue. We made some measurements around UART0 and we are convinced that u-boot detects spurious data during start up. Find below 2 ocilloscope screenshots (CH1 : PIN 3-J1 B_UART0_TX, CH2 : PIN 4-J1 B_UART0_RX). http://hpics.li/9d7742f http://hpics.li/956957a RX signal looks noisy when TX signal changes. Maybe a coupling issue?
Regards, Ludovic -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
