We are attempting to bring up an Omnivision 7740 CMOS sensor. But, we are running into difficulty in bringing up the OmniVision Sensor to run correctly with the TI DM6441 Video Processing Front End (VPFE). 10bit Raw RGB data seems to work, but 8bit raw RGB and 8bit generic YUV modes of the OmniVision sensor are not working.
We believe the issue may be related to how we are mapping the video data lines from the imager to the TI processor. The current schematic has data D0-D9 from the sensor mapped to D0-D9 on the Davinci VPFE. We originally thought that proper register settings in the Omnivision sensor would allow us to operate in 8 bit generic YUV format. But we now suspect that when the Omnivision 7740 sensor is setup for this mode, data is output on data lines D2-D9 only, whereas the the 6441 VPFE is expecting the 8 bit data on D0-D7. There are two OmniVision registers that seem to control how the data lines can be reversed and/or shifted by 2 bits, and that this would allow us to get the 8 bit YUV data aligned properly for how the TI DM6441 expected to receive the YUV data on lines D0-D7. But we have been unable to come up with register combinations that work.
Can TI answer if the 8 bit YUV mode of the Omnivision 7740 sensor is compatible with the TI6441 VPFE?
Is this possible with D0-D9 from the Omnivision 7740 mapped to D0-D9 of the Davinci VPFE? Or, do we need to map D2-D9 from the 7740 to D0-D7 of the Davinci 6641?