Hello Erik,
I am working on raw capture with OMAP-L138 LCDK too.
I think that you might have misinterpret the second parameter in the following function:
VPIFCaptureRawIntlineConfig(SOC_VPIF_0_REGS, 28);
The second parameter indicates the number of lines (hexadecimal).
I am not sure about VPIF_Rx configuration that I have made because I am having some issues with i2c and I cannot check it,so my obove suggestion might be wrong.
Finally,I have a question regarding your original post.You mention that you generated a 24 MHz clock , did you do that with CDCE913Init() function?
Regards,
Katerina