ISI workflow for Raw12bit camera data

[xu_ji1]

Hello，

I want to know the i.MX8 ISI workflow for Raw12bit data,

camera output Raw12bit-->ISI in--->ISI--->ISI out--->Raw16bit/V4L2_PIX_FMT_Y12

Why ISI out Raw16bit how to convert the Raw12 in ISI,which module convert in ISI?

Why the src_fmt->fourcc of ISI is RGB4 for RAW12bit data, can ISI out V4L2_PIX_FMT_YUYV with Raw12 bit in?

Thanks

[joanxie]