ADV7181C on Imx6 Platform

[artitrivedi]

Hello,

I am trying to connect ADV7181C on imx6 custom board's IPU 0 CSI0 port. for that I am changing

adv7180.c file. mainly I am changing adv7180_hard_reset() function fot i2c register settings.but As soon as I load

my driver I get message adv7180:no video lock. if I see on my hardware all 8 data lines are coming fine. and my driver

is in autodetect std mode. Can anybody guide me to resolve this issue.

TIA

[igorpadykov]

Hi Arti

one can check what mode is used bt656 or gated, please look at

ADV7181 on IMX6Q board 

Best regards
igor
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[artitrivedi]

Hi igor,

Thanks for the reply, That link I have seen before, and when I use my adv7180 in BT656 mode, I am getting

split image as mentioned in that link, and solution was given to use hsync,vsync and made it to 16 bit. but

I want to use my driver for BT656 8 bit mode ( where there will be no need of hysnc,vsync. EAV and SAV will do

the work). Any idea how can I achieve that?

TIA

-Arti

[igorpadykov · Accepted solution]

Hi Arti

please check how deinterlacing is implemented in unit test

imx-test/..mxc_v4l2_test/mxc_v4l2_tvin.c
www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.7.tar.gz

Best regards
igor

[artitrivedi]

Hi Igor,

you were right, that problem because of v4l2 user application I am using, mxc_v4l2_tvin.c I can not use because it

requires display, On my custom imx6 I do not have display. So I have modified Capture and save frame application

and it worked.

[artitrivedi]

Hi igor,

I am using mxc_v4l2_still.out to capture and save frame on imx6, as I do use fb for output. mxc_v4l2_tvin

requires fb0. One more thing I have noticed: DATA_EN of csi0 is not connected. I guess that is required, which

is mentioned in below link:

https://community.nxp.com/thread/443555 

what I have understood is DATA_EN requires for correct timing and sync. Please help me if I am missing something.