I don't know anything about these two boards, but the Kconfig in arch/arm/mach-omap2 shows the same description for both boards and it makes it seems like they are both AM335X SOC's.

config TI814X bool "TI814X SoC" help Support for AM335x SOC from Texas Instruments. The AM335x high performance SOC features a Cortex-A8 ARM core and more.

config TI816X bool "TI816X SoC" help Support for AM335x SOC from Texas Instruments. The AM335x high performance SOC features a Cortex-A8 ARM core and more.

Are those really the correct descriptions? I only came across this while trying to port some OMAP_GPMC stuff to Kconfig. It doesn't seem like they get the love that the other SoC's get.

adam