ADV7180 on IMX6 giving magenta output

[jamiew]

Hello

I'm trying to get the ADV7180 working with the Bluechip Technologies RM3 based on the quad core i.mx6.

I'm using Yocto with the Bluechip layer for the RM3.

I have connected:

P0-P7  on the ADV go to IPU1_CSI0_D_13-19 (I think)

LLC to MX6Q_PAD_CSI0_PIXCLK__IPU1_CSI0_PIXCLK

VS/FIELD to MX6Q_PAD_CSI0_VSYNC__IPU1_CSI0_VSYNC

HS to MX6Q_PAD_CSI0_MCLK__IPU1_CSI0_HSYNC

RESET to MX6Q_PAD_NANDF_CS2__GPIO_6_15

INTRQ to CAM_IRQ (not that I think this is used)

PWRDWN to MX6Q_PAD_CSI0_DATA_EN__GPIO_5_20

With adv7180.c as is the tvin unit test times out.

However if I set p->u.bt656.clock_curr = 27000000; as mentioned in another post on this forum I get the image below.

Anyone seen an image like this before?

I think it could be today with EAV SAV not being read? But I'm new to bt656 and I'm not sure how to check!

[jamiew · Accepted solution]

Turns out the problem was the 8bit bt.656 being connected to the lower 8 bits of the 10bits available. Had to physically move connection up by two bits. Now works fine. Thanks.

[igorpadykov]

Hi Jamie

for ADV7180 testing one can use unit test mxc_v4l2_tvin (bt656 configuration)

Re: ADV7180 on imx6 quad

Re: ADV7181 on IMX6Q board

Re: How to test TV-IN ( ADV7180) for IMX53 ARD board

Best regards

igor

[jamiew]

Hi Igor

Thank you for your reply.

The output shown is from mxc_v4l2_tvin, however I haven't seen any options for "bt656 configuration". Where do I set that?

Thanks for the links too, I had already read the first two but will read through the third one now.

Jamie

[igorpadykov]

I think "bt656 configuration" refers to ADV7180,

please read its documentation.

For mxc_v4l2_tvin there is no need for configuration,

it is already configured for bt656.