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AM5728: AR0134 sensor 12-bit raw support

Part Number: AM5728

we use ar0134 image sensor ,  connect it with vip2 vin3a of 5728,    the interface is  12 bit   raw  ,   in spruhz6f  there's a few information about  how to support raw  12bit  format ,   I need  12 bit raw data in ddr memory,  vip seems so complicated,

in  page 1690 of spruhz6f,   

Figure 9-17 describes the mux configuration where 12 bit components are swapped. This mode may be
useful when the input data is 12 bit per component YUV422 and is sent directly to memory.

why swap 12bit component?

how   to set vip parser, vpdma?   

software is ti-processor-sdk-linux-am57xx-evm-03.00.00.04

thanks