Fail to get interrupt from ov7740 camera on iMX6Q sabrelite

[tanakaimx]

Hi all,

Board = iMX6Q SabreLite

Camera = omnivision ov7740

I connect camera ov7740 to iMX6Q SabreLite via I2C and CSI. The I2C control part works well but I can not get interrupt from the camera.

I always get the dqueue wait_event_interruptible timeout error.

I am using BT656 protocol to stream the uncompressed video (not using the Hsync and Lsync).

As far as I am concerned iMX6 is supporting BT656 mode. May I know if anyone of you aware of this problem before?

Thanks.

[igorpadykov]

Hi Tanaka

had you tried to contact Boundary Devices with

this issue ?

EricNelson  how do you think, what could be problem.

Best regards

chip

[EricNelson]

Hi Chip,

I really have no idea. Camera drivers are tricky and we haven't been involved in this one.

We have a number of drivers in our kernel tree that can be used as examples (HDMI, SDI, Composite video input).

I don't know off-hand whether any of them is currently configured to use BT.656.

[igorpadykov]

Thanks Eric.

Hi Tanaka you can test this camera with

SDK camera test (sdk/drivers/camera),

iMX6_Firmware_Guide.pdf gives description of tests.

i.MX 6Series Platform SDK

Since iMX6Q SabreLite is not supported in SDK, you will

have to modify (or add) necessary board files definitions.

Best regards

chip