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8127 ipnv sensor problem



Hi all:

I use DM8127 with RDK3.8, replaced the sensor from mt9j003 with a new sensor (720p 12bit raw)

so I followed IMGS_MICRON_MT9M034 steps add a new sensor type, 

then, I use DCC to check image file, raw file is fine, but yuv color is very strange like below:

it's my ceiling, it is 720p, but  y and u are all 0 only v data (last 1/4 data) valid, web stream is the same as yuv file

my configures are:

#define VSTAB_MULT_COEFFICIENT 1.2
isif_reg->VDINT0 = 790;//715;// 720;
isif_reg->VDINT1 = 790;//715;//720;
isif_reg->VDINT2 = 790;//715;//720;
////////////////Ipipe////////////////////
ipipe_reg->SRC_HSZ = 1280;

ipipe_reg->SRC_VSZ = 720;
ipipe_reg->SRC_VPS = 0;
ipipe_reg->SRC_HPS = 0;

////////////////RSZ////////////////////
gIss_captCommonObj.pModuleInstance->nLscTableIsValid = MSP_TRUE;

isif_reg->SLV0 = 0;

isp_regs->ISP5_CTRL &= ~(1 << 22); 

ipipe_reg->SRC_COL = 0xE4;

Anyone can give me some good advices to solve the problem?? thank you very much!