topic Re: Read MIPI YUV422 data in i.MX Processors

Read MIPI YUV422 data

alexisfronteau — Fri, 10 Nov 2017 14:49:11 GMT

Hi,

I'm trying to get 4096x2160 YUV422 pixels on mipi with an IMX6Q. I use 4 lanes, data type = 0x1E, virtual channel 1. I set the pixelformat V4L2_PIX_FMT_YUYV but there is a problem with data that I read. I select CSI MEM path.

Bytes are sent as:

lane 1 : Byte0-----Byter4-----Byter8-------Byter12 ...

lane 2 : Byte1-----Byter5-----Byter9-------Byter13 ...

lane 3 : Byte2-----Byter6-----Byter10-----Byter14...

lane 4 : Byte3-----Byter7-----Byter11-----Byter15 ...

But when I read IDMAC, i have :

Byte2----Byte3----Byte3----Byte7----Byte10----Byte11----Byte15----Byte9 ...

I have checked ipu registers and they seemed configured well.

Thanks

Re: Read MIPI YUV422 data

igorpadykov — Mon, 20 Nov 2017 23:28:36 GMT

Hi Alexis

for MIPI YUV422 settings one can check sect.6.1. Use case example—image
capture from sensor to memory AN5305 MIPI–CSI2 Peripheral on i.MX6 MPUs
https://www.nxp.com/docs/en/application-note/AN5305.pdf
and Figure 19-10. YUV422-8 data reception i.MX6DQ Reference Manual
http://www.nxp.com/docs/en/reference-manual/IMX6DQRM.pdf

Best regards
igor
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