Re: Capture image from imx219 sensor on i.MX8MM

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Hi Tim,

On 07.07.23 23:57, Tim Harvey wrote:
[...]
> 
> Frieder,
> 
> Where did you end up with this? I have imx219 capture working on
> imx8mm on a 5.15 kernel with lots of backports but have not managed to
> repeat it on a 6.4 kernel. I don't run into the issue you are running
> into (I have the imx-media device showing) but the media-ctl entities
> have changed since my 5.15 kernel and I can't figure out how to link
> them up and configure them with media-ctl.
> 
> On my imx8mm-venice-gw72xx with imx8mm-venice-gw72xx-0x-imx219.dtso I see:
> root@jammy-venice:~# cat /sys/bus/media/devices/media*/model
> imx-media
> hantro-vpu
> hantro-vpu
> root@jammy-venice:~# cat /sys/bus/media/devices/media0/model
> imx-media
> root@jammy-venice:~# media-ctl --device /dev/media0 -p
> Media controller API version 6.4.0
> 
> Media device information
> ------------------------
> driver          imx7-csi
> model           imx-media
> serial
> bus info        platform:32e20000.csi
> hw revision     0x0
> driver version  6.4.0
> 
> Device topology
> - entity 1: csi (2 pads, 2 links)
>             type V4L2 subdev subtype Unknown flags 0
>             device node name /dev/v4l-subdev0
>         pad0: Sink
>                 [fmt:UYVY8_2X8/640x480 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:lim-range]
>                 <- "csis-32e30000.mipi-csi":1 [ENABLED,IMMUTABLE]
>         pad1: Source
>                 [fmt:UYVY8_2X8/640x480 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:lim-range]
>                 -> "csi capture":0 [ENABLED,IMMUTABLE]
> 
> - entity 4: csi capture (1 pad, 1 link)
>             type Node subtype V4L flags 0
>             device node name /dev/video0
>         pad0: Sink
>                 <- "csi":1 [ENABLED,IMMUTABLE]
> 
> - entity 10: csis-32e30000.mipi-csi (2 pads, 2 links)
>              type V4L2 subdev subtype Unknown flags 0
>              device node name /dev/v4l-subdev1
>         pad0: Sink
>                 [fmt:UYVY8_1X16/640x480 field:none
> colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range]
>                 <- "imx219 2-0010":0 []
>         pad1: Source
>                 [fmt:UYVY8_1X16/640x480 field:none
> colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range]
>                 -> "csi":0 [ENABLED,IMMUTABLE]
> 
> - entity 15: imx219 2-0010 (1 pad, 1 link)
>              type V4L2 subdev subtype Sensor flags 0
>              device node name /dev/v4l-subdev2
>         pad0: Source
>                 [fmt:SRGGB10_1X10/3280x2464 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:full-range
>                  crop.bounds:(8,8)/3280x2464
>                  crop:(8,8)/3280x2464]
>                 -> "csis-32e30000.mipi-csi":0 []
> 
> When I try to link and configure the pipeline I run into issues I
> don't know how to resolve:
> root@jammy-venice:~# media-ctl --device /dev/media0 --reset
> root@jammy-venice:~# media-ctl --device /dev/media0 --links "'imx219
> 2-0010':0->'csis-32e30000.mipi-csi.0':0[1]"
> Unable to parse link: Invalid argument (22)
> ^^^ not sure why I can't link imx219 source pad with mipi-csi sink pad
> 
> What changed for me from my 5.15 kernel is the entities and pads
> above. My 5.15 kernel looks like this:
> root@jammy-venice:~# cat /sys/bus/media/devices/media2/model
> imx-media
> root@jammy-venice:~# media-ctl --device /dev/media2 -p
> Media controller API version 5.15.15
> 
> Media device information
> ------------------------
> driver          imx7-csi
> model           imx-media
> serial
> bus info        platform:32e20000.csi
> hw revision     0x0
> driver version  5.15.15
> 
> Device topology
> - entity 1: csi (2 pads, 2 links)
>             type V4L2 subdev subtype Unknown flags 0
>             device node name /dev/v4l-subdev0
>         pad0: Sink
>                 [fmt:UYVY8_2X8/800x600 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:lim-range]
>                 <- "imx7-mipi-csis.0":1 [ENABLED,IMMUTABLE]
>         pad1: Source
>                 [fmt:UYVY8_2X8/800x600 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:lim-range]
>                 -> "csi capture":0 [ENABLED,IMMUTABLE]
> 
> - entity 4: csi capture (1 pad, 1 link)
>             type Node subtype V4L flags 0
>             device node name /dev/video2
>         pad0: Sink
>                 <- "csi":1 [ENABLED,IMMUTABLE]
> 
> - entity 10: imx7-mipi-csis.0 (2 pads, 2 links)
>              type V4L2 subdev subtype Unknown flags 0
>              device node name /dev/v4l-subdev1
>         pad0: Sink
>                 [fmt:UYVY8_1X16/640x480 field:none
> colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range]
>                 <- "imx219 2-0010":0 []
>         pad1: Source
>                 [fmt:UYVY8_1X16/640x480 field:none
> colorspace:smpte170m xfer:709 ycbcr:601 quantization:lim-range]
>                 -> "csi":0 [ENABLED,IMMUTABLE]
> 
> - entity 15: imx219 2-0010 (1 pad, 1 link)
>              type V4L2 subdev subtype Sensor flags 0
>              device node name /dev/v4l-subdev2
>         pad0: Source
>                 [fmt:SRGGB10_1X10/3280x2464 field:none colorspace:srgb
> xfer:srgb ycbcr:601 quantization:full-range
>                  crop.bounds:(8,8)/3280x2464
>                  crop:(8,8)/3280x2464]
>                 -> "imx7-mipi-csis.0":0 []
> # configure media controller links
> media-ctl --device /dev/media2 --reset
> # link the imx219 source pad (0) to the imx7-mipi-csis sink pad (0)
> media-ctl --device /dev/media2 --links "'imx219
> 2-0010':0->'imx7-mipi-csis.0':0[1]"
> # configure the imx219 source pad (0) for srgb 640x480
> media-ctl --device /dev/media2 -v -V "'imx219 2-0010':0
> [fmt:SRGGB8/640x480 field:none]"
> # configure the csi sink pad (0) for srgb 640x480
> media-ctl --device /dev/media2 -v -V "'csi':0 [fmt:SRGGB8/640x480 field:none]"
> # stream 640x480@30fps
> gst-launch-1.0 v4l2src device=/dev/video0 !
> video/x-bayer,format=rggb,width=640,height=480,framerate=10/1 !
> bayer2rgb ! fbdevsink # works
> 
> Maybe you have gotten further than this by now?
> 
> If you are still having issues getting imx-media to register we can
> look at kernel configs. I believe the following are necessary:
> CONFIG_VIDEO_IMX219=y
> CONFIG_VIDEO_IMX_MIPI_CSIS=y
> CONFIG_VIDEO_IMX7_CSI=y

I got this working back in February with Linux 6.2-rc8 and a few
additional patches (see [1]), but I haven't tried this anymore since then.

In my notes I have the following commands to test the camera:

media-ctl -d /dev/media0 -l "'imx219 1-0010':0 ->
'csis-32e30000.mipi-csi':0[1]"
media-ctl -d /dev/media0 -V '"imx219 1-0010":0[fmt:SRGGB8_1X8/1920x1080
field:none]'
media-ctl -d /dev/media0 -V
'"csis-32e30000.mipi-csi":0[fmt:SRGGB8_1X8/1920x1080 field:none]'
media-ctl -d /dev/media0 -V '"csi":0[fmt:SRGGB8_1X8/1920x1080 field:none]'

v4l2-ctl -d /dev/video0
--set-fmt-video=width=1920,height=1080,pixelformat=RG10 --stream-mmap

I currently don't have the time to look at this any closer, but maybe
this already helps you in some way.

Best regards
Frieder

[1]
https://git.kontron-electronics.de/sw/misc/linux/-/commits/feature/v6.2-debug-csi



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