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The camera preview - bottom and top side partially cut-off with adv7180 tvin solution on imx6q platform

Question asked by Ken Lin on Feb 5, 2014
Latest reply on Mar 31, 2014 by Yixing Kong

1. I followed the adv7180 tvin design on sabreauto board and did the driver porting (adv7180.c) and board file modification (based on board-mx6q_sabreauto.c from imx_jb4.2.2_1.1.0-ga codebase). Unfortunately, I found the TV video (tested with NTSC/PAL) bottom and top side area were partially cut-off when I launched the android camera app.


2. The preview screen started to scroll when I modified ADV7180 PAL V bit begin register and could see the full TV video content. It seems having to do with the timing parameters(e.g. vsync, blanking)


3. I'm not sure if I need to check CSI_CCIR_CODE_1, CSI_CCIR_CODE_2, CSI_CCIR_CODE3 in ipu_capture.c for CCIR656 interlaced timing. Any suggestions/comments/patches are welcome. Thank you