How to change csi0 pin from DAT12~DATA19 to DAT4~DAT11(imx6q)?

[echozeng]

Dear All,

        Imx6q+Tw9900 (output  YCbCr 4:2:2 ).

        If config DAT12~DATA19 pin as camera data input， all works fine。

        I changed  csi0 data pin from DAT12~DATA19 to DAT4~DAT11 now,  but can not capture video data。

        How to use DAT4~DAT11 to replace DAT12~DATA19?

[igorpadykov]

Hi echo

there is no way to change it, but one can try other configurations

given in sect.4.11.10.1 IPU Sensor Interface Signal Mapping i.MX6DQ Datasheet

http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf

Best regards

igor

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[qiang_li-mpu_se]

For BT656 interface mode (EAV/SAV on data line), the data must be input from CSI_DATA19 ~ CSI_DATA12.

If you must use CSI_DATA11 ~ CSI_DATA4, then you can use VSYNC/HSYNC mode to capture, it needs 16 bits generic mode to capture the data from CSI_DATA19 ~ CSI_DATA4, then software needs drop the 8 bits MSB in memory.

From CSI side, the data will always to receive from DATA19, the MSB. This can't be changed.

[echozeng]

Dear Li Qiang,

     Tw9900 camera interface only has 8bits data pins, so we must use DAT19~DAT12 pin to capture video data according your description. is that right?

[qiang_li-mpu_se]

Yes