i.MX ProcessorsのトピックMIPI camera Image is getting corrupted with higher frequency

MIPI camera Image is getting corrupted with higher frequency

titusstalin — Mon, 27 Feb 2017 06:53:34 GMT

Dear All,

I've connected the MIPI camera to imx6 board and trying to capture the frames from it.

But I am getting corrupted frames when I operate the frequency in higher values (say 700Mbps or 1500Mbps)

Also I have connected the MIPI exerciser (instead of MIPI camera) to imx6 board and getting the same issue.

Using external frequency I operated the MIPI exerciser with lower frequency then I have got the complete exact picture I've configured.

What could be the problem ?

Any configuration I'm missing here ?

Can you please help me on this issue?

Thanks for your help.

Regards,

Titus S.

Re: MIPI camera Image is getting corrupted with higher frequency

titusstalin — Mon, 27 Feb 2017 07:12:55 GMT

In addition to that, I've configured the MIPI CSI for 1 lane configuration and data rate is 1500/700Mbps.

Is there any restriction for this ?

Re: MIPI camera Image is getting corrupted with higher frequency

igorpadykov — Mon, 27 Feb 2017 08:33:14 GMT

Hi Titus

i.MX6DQ RM sect.37.1.2.1.1 Camera Ports describes it as :

http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf

The maximum bandwidth of the interface is as follows:
• 200Mhz for 4 data lanes configuration (800Mbps/lane, 400MByte/sec)
• 187.5Mhz for 3 data lanes configuration (1000Mbps/lane, 375MByte/sec)
• 125Mhz for 2 data lanes configuration (1000Mbps/lane, 250MByte/sec )
• 62.5Mhz for 1 data lane configuration (1000Mbps/lane, 125Mbyte/sec)

Best regards
igor
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Re: MIPI camera Image is getting corrupted with higher frequency

titusstalin — Mon, 27 Feb 2017 09:19:13 GMT

Thanks for your reply.

How can I configure the MIPI CSI camera driver for number of lanes ?

I've tried to use "mipi_csi2_set_lanes(mipi_csi2_info, 4)" for 4 lanes configuration.

But I am not able to get the frames after this change.

Is there any other change I need to make it for lanes count ?

Can you please us on this ?