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adv7343 on dm6467 out put CVBS problem

duange zeng
Prodigy 160 points

    Hi!  we use adv7343 video encoder in our custom dm6467 board，vpif connect to adv7343 Y0~Y7 pins and VPIF_CLKOUT2 connect CLKIN_A pin，config adv7343 DAC_1 pin output CVBS signals， but termination LCD TV shows black-and-white screen without any color(without Chroma data).

     we have test adv7343 Color Bar and video source both with color。 In driver, vpif and adv7343 config with default setting(dvsdk_3_10_00_19 kernel bata 2.6.32 -RC2).

does some one get this issue? how can I make it works?