i.MX Processors中的主题 Re: Second camera interface

Second camera interface

reuelhaavrahami — Wed, 29 Aug 2018 06:21:46 GMT

We have two cameras connected to IMX6D. The first CSI0 work fine. The second CSI1 has an shift on the data. I suppose that due to the fact that CSI0 is taken from DATA04 to DATA19, it does a bit-shift of 4 to correct it towards the memory buffer. Seemingly the CSI1 does the same thing, however our camera interface is connected to DATA00 to DATA15. This causes the data to shift 4 bits thus we don't get the correct data.Where can I fix this issue?

We are using Linux kernel 3.14.52 on a custom board.

Re: Second camera interface

igorpadykov — Wed, 29 Aug 2018 09:20:47 GMT

Hi Reuel

sensor connection to IPU CSI is fixed and depends on used format, described on

sect.4.12.10.1 IPU Sensor Interface Signal Mapping i.MX6DQ Datasheet

http://www.nxp.com/docs/en/data-sheet/IMX6DQCEC.pdf

so shifting may be due to other reasons.

Best regards
igor
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Re: Second camera interface

reuelhaavrahami — Wed, 29 Aug 2018 12:16:17 GMT

When you say "the sensor connections to the IPU CSI is fixed", is that a hardware limitation or can that be changed through changing the driver?

Re: Second camera interface

igorpadykov — Wed, 29 Aug 2018 14:29:37 GMT

right, this is a hardware limitation and described in sect.4.12.10.1

IPU Sensor Interface Signal Mapping i.MX6DQ Datasheet

http://www.nxp.com/docs/en/data-sheet/IMX6DQCEC.pdf