Re: MT9M131 on I.MX6DL CSI color issue

Florian Boor
2018-01-15T14:41:53Z

Hi Philipp,

On 15.01.2018 13:49, Philipp Zabel wrote:
> media-ctl propagates video formats downstream, can you try reversing the
> order?

I did but it does not make a difference.

> Also, while the external format is UYVY2X8, internally the IPU only
> supports AYUV32, so the last call should be
>
> media-ctl -d /dev/media0 -v -V "'ipu1_csi0':2 [fmt:AYUV32/${GEOM} field:none]"
> not that it should make a visible difference.
> And setting a format on 'ipu1_csi0 capture' is not necessary.

Changed this as well. What I do now is the following:

SF="UYVY2X8"
IF="AYUV32"
GEOM="1280x1024"

media-ctl -r
media-ctl -l "'mt9m111 2-0048':0 -> 'ipu1_csi0_mux':4[1]"
media-ctl -l "'ipu1_csi0_mux':5 -> 'ipu1_csi0':0[1]"
media-ctl -l "'ipu1_csi0':2 -> 'ipu1_csi0 capture':0[1]"

media-ctl -d /dev/media0 -v -V "'mt9m111 2-0048':0 [fmt:${SF}/${GEOM} field: none]"
media-ctl -d /dev/media0 -v -V "'ipu1_csi0_mux':4 [fmt:${SF}/${GEOM} field: none]"
media-ctl -d /dev/media0 -v -V "'ipu1_csi0_mux':5 [fmt:${SF}/${GEOM} field: none]"
media-ctl -d /dev/media0 -v -V "'ipu1_csi0':2 [fmt:${IF}/${GEOM} field:none]"

> The new picture looks a little like there is 10-bit sensor data and only
> the lower 8-bit arrive in memory, given the number of wraparounds.

I will take a look at the sensor configuration. Maybe there is some issue or a
difference among all th MT9M1x1 semsors the driver does not support.

> Can you show the output of "media-ctl -p" (or "media-ctl --get-v4l2" for
> each pad in the pipeline)?

> media-ctl --get-v4l2 "'mt9m111 2-0048':0"
[fmt:UYVY2X8/1280x1024 field:none]
crop.bounds:(26,8)/1280x1024
crop:(26,8)/1280x1024]
> media-ctl --get-v4l2 "'ipu1_csi0_mux':4"
[fmt:UYVY2X8/1280x1024 field:none]
> media-ctl --get-v4l2 "'ipu1_csi0_mux':5"
[fmt:UYVY2X8/1280x1024 field:none]
> media-ctl --get-v4l2 "'ipu1_csi0':0"
[fmt:UYVY2X8/1280x1024 field:none
crop.bounds:(0,0)/1280x1024
crop:(0,0)/1280x1024
compose.bounds:(0,0)/1280x1024
compose:(0,0)/1280x1024]
> media-ctl --get-v4l2 "'ipu1_csi0':2"
[fmt:AYUV32/1280x1024 field:none]

I uploaded the complete topology output from media-ctrl -p as well [1].

Greetings

Florian

[1] http://www.kernelconcepts.de/~florian/media-ctl-topology.txt

--
The dream of yesterday Florian Boor
is the hope of today Tel: +49 271-771091-15
and the reality of tomorrow. Fax: +49 271-338857-29