I am having trouble understanding how to initialize the fourth UART on an AM3517EVM in Linux using linux-2.6.37-psp04.02.00.07.sdk provided with the reference board.
I can see that with both arch/arm/mach-omap2/serial.c and drivers/omap_serial.c that the first three UART's are initialized, but the fourth is not.
It looks like the arch/arm/mach-omap2/serial.c may have something to do with failing omap_hwmod_lookup() which begs the question, 'How do the serial interfaces get put into the hwmod table in the first place?"
This may be a missing line in a header file somewhere, but I am searching for a clue to move forward in my understanding of how this is initialized.
Charles