We have been struggling bringing up our OMAP3503 w/65930 board. We are not booting at all. Our 26Mhz external clock looks good and we verified our sys_boot configuration jumpers. The same configuration works on our 3530 EVM. We also verified the supplies as best we can (can't probe right at the chip as layout is too dense).
I can connect a JTAG debugger and I get errors with the startup gel file with CCS. It works OK on the EVM. I traced the trouble spot in the gel file to the place where the CORE DPLL is started. This is very early in the startup. I can see where the CORE DPLL is configured and started. This is where it stalls and never returns as the PLL never achieves lock (I presume).
If I kill the gel error script I can read and write various registers. I can read 0x48307270 and see it is set to 00000040 which shows me the system clock is indeed configured for external clock input. I can also read 0x480022f0 which shows me 00000311 so our sys_boot configuration is set OK. I can also change the ARM PC register but I can not step. I can disassemble the on chip boot code at 0x0014000 but again can not execute as I can not step or run.
I am at a loss as to what to try or look for next.
Any ideas?
