AM5728: v4l2 and VIP configuration

Nima Dibaj

Prodigy 40 points

Part Number: AM5728

Hello

In our custom board, we use ADV7180. There is /dev/video1 and v4l2-ctl --list-devices : vip:vin3a is ok.

but when i want to run a gst pipe in terminal, it returns internal error.

my Questions:

1- If ADV7180 configuration are correct, but vin3a-d0~vin3a-d7

not connected, what will happen for v4l2?

2- Dts parameters like channels, pclk, cvbs,.... are not used in adv7180 driver, Are these items specific to a chip or v4l2 or VIP? And where can i find the parameter list?

I apologize for the irregular questions.

over 6 years ago

0 Nima Dibaj over 6 years ago

Prodigy 40 points

Hi, There is no choice but to wait!

‌I set vin3a-d8 ~ vin3a-d23 as GPIO. and 0~7 as vin3a.

But no change in result. when i remove '' channels=<0>;'' i have no video node in /dev, and when i add it, i see four video node, video1 video2 video3 video4!!!!

In dmesg output i see this : '' vin3a : Can not get next endpoint child''

Please help me.

0 Michael Erdahl over 6 years ago in reply to Nima Dibaj

TI__Genius 13505 points

Hi Nima,

Thank you for your patience. The engineer that would normally help with video capture-related questions on the forum is on vacation - I am finding someone to step in and help out.

Are you setting the vin3a d0-d7 pinmux in u-boot?

Regards,
Mike

0 Nima Dibaj over 6 years ago in reply to Michael Erdahl

Prodigy 40 points

Hi Mike,

Yes, I set vin3a d0~d7 in u-boot.

Thanks a lot.

0 Nima Dibaj over 6 years ago in reply to Nima Dibaj

Prodigy 40 points

Are friends still on vacation or are our questions worthless? Our team has no choice but to use the am5728 processor because we have designed our custom board