Hi Adam,
There are many possibility's that result in an -EPIPE when validating
formats and unfortunately V4L2 is not always as very helpfull when
diagnosing the problem. What I usually do is to,
1. Inspect rvin_mc_validate_format() in
drivers/media/platform/rcar-vin/rcar-dma.c
This will give you a clear view of how the format between the CSI-2
and VIN is validated.
2. Increase the log level for drivers/media/v4l2-core/v4l2-subdev.c
specially for v4l2_subdev_link_validate_default().
This will give you insight into all formats from the CSI-2 receiver
towards the camera.
By doing these two things you will see in the system log which part of
the format validation that is missmatched.
There is also a wiki page for capture using R-Car VIN that may be
helpful for you.
https://elinux.org/R-Car/Tests:rcar-vin
On 2021-03-12 08:28:41 -0600, Adam Ford wrote:
> I have an IMX290 camera connected to an RZ/G2M SoC via the 4-channel CSI.
>
> &csi40 {
> status = "okay";
>
> ports {
> port@0 {
> reg = <0>;
> csi40_in: endpoint {
> clock-lanes = <0>;
> data-lanes = <1 2 3 4>;
> remote-endpoint = <&imx290_ep>;
> };
> };
> };
> };
>
> On the I2C bus, I have
>
> imx290: camera-sensor@1a {
> compatible = "sony,imx290";
> reg = <0x1a>;
> reset-gpios = <&gpio_exp2 0 GPIO_ACTIVE_LOW>;
> clocks = <&versaclock6_bb 1>;
> clock-names = "xclk";
> clock-frequency = <37125000>;
> vdddo-supply = <®_cam0_en0>;
> vdda-supply = <®_cam0_en1>;
> vddd-supply = <®_cam0_en0>;
>
> port {
> imx290_ep: endpoint {
> data-lanes = <1 2 3 4>;
> link-frequencies = /bits/ 64 <148500000 222750000>;
> remote-endpoint = <&csi40_in>;
> };
> };
> };
>
> I configure the pipeline with:
>
> media-ctl -l "'rcar_csi2 feaa0000.csi2':1 -> 'VIN0 output':0[1]"
>
> I also have tried configuring the video formats in several different ways
>
> media-ctl --set-v4l2 "'imx290 2-001a':0[fmt:SRGGB12_1X12/1920x1080 field:none]"
> media-ctl --set-v4l2 "'rcar_csi2
> feaa0000.csi2':0[fmt:SRGGB12_1X12/1920x1080 field:none]"
> media-ctl --set-v4l2 "'rcar_csi2
> feaa0000.csi2':1[fmt:SRGGB12_1X12/1920x1080 field:none]"
>
> or
>
> media-ctl --set-v4l2 "'rcar_csi2
> feaa0000.csi2':0[fmt:UYVY8_2X8/1920x1080 field:none]"
> media-ctl --set-v4l2 "'rcar_csi2
> feaa0000.csi2':1[fmt:UYVY8_2X8/1920x1080 field:none]"
> media-ctl --set-v4l2 "'imx290 2-001a':0[fmt:UYVY8_2X8/1920x1080 field:non
>
> but no matter what I do when I attempt to stream, I get a broken pipe,
> even when I use fakesink as the target.
>
> root@beacon-rzg2h:~# GST_DEBUG=2 gst-launch-1.0 -v v4l2src
> device=/dev/video1 ! video/x-raw,width=1920,height=1080 ! fakesink
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> 0:00:03.727500390 501 0x10efd4f0 ERROR v4l2src
> gstv4l2src.c:337:gst_v4l2src_get_input_size_info:<v4l2src0> Cropcap
> fail, CROPCAP has not supported
> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps =
> video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2,
> framerate=(fraction)100/1, interlace-mode=(s1
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps =
> video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2,
> framerate=(fraction)100/1, interlace-m1
> /GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps =
> video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2,
> framerate=(fraction)100/1, interlace-mode1
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps =
> video/x-raw, width=(int)1920, height=(int)1080, format=(string)YUY2,
> framerate=(fraction)100/1, interlace-1
> 0:00:03.737388309 501 0x10efd4f0 WARN v4l2bufferpool
> gstv4l2bufferpool.c:870:gst_v4l2_buffer_pool_start:<v4l2src0:pool:src>
> Uncertain or not enough buffers, enad
> 0:00:03.740266641 501 0x10efd4f0 ERROR v4l2bufferpool
> gstv4l2bufferpool.c:757:gst_v4l2_buffer_pool_streamon:<v4l2src0:pool:src>
> error with STREAMON 32 (Broken pi)
> 0:00:03.740474842 501 0x10efd4f0 WARN v4l2bufferpool
> gstv4l2bufferpool.c:1188:gst_v4l2_buffer_pool_poll:<v4l2src0> error:
> poll error 1: Broken pipe (32)
> 0:00:03.740693123 501 0x10efd4f0 WARN v4l2src
> gstv4l2src.c:1020:gst_v4l2src_create:<v4l2src0> error: Failed to
> allocate a buffer
> 0:00:03.740791643 501 0x10efd4f0 WARN basesrc
> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: Internal data
> stream error.
> 0:00:03.740822843 501 0x10efd4f0 WARN basesrc
> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: streaming
> stopped, reason error (-5)
> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could
> not read from resource.
> Additional debug info:
> ../../../git/sys/v4l2/gstv4l2bufferpool.c(1188):
> gst_v4l2_buffer_pool_poll ():
> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
> poll error 1: Broken pipe (32)
> Execution ended after 0:00:00.013644415
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> 0:00:03.741392965 501 0x10ec96c0 WARN v4l2bufferpool
> gstv4l2bufferpool.c:1042:gst_v4l2_buffer_pool_stop:<v4l2src0:pool:src>
> some buffers are still outstanding
> 0:00:03.741428005 501 0x10ec96c0 WARN bufferpool
> gstbufferpool.c:567:gst_buffer_pool_set_active:<v4l2src0:pool:src>
> stop failed
> 0:00:03.743868095 501 0x10ec96c0 ERROR v4l2bufferpool
> gstv4l2bufferpool.c:757:gst_v4l2_buffer_pool_streamon:<v4l2src0:pool:src>
> error with STREAMON 32 (Broken pi)
> 0:00:03.744090576 501 0x10ec96c0 WARN v4l2bufferpool
> gstv4l2bufferpool.c:1042:gst_v4l2_buffer_pool_stop:<v4l2src0:pool:src>
> some buffers are still outstanding
> 0:00:03.744123936 501 0x10ec96c0 WARN bufferpool
> gstbufferpool.c:567:gst_buffer_pool_set_active:<v4l2src0:pool:src>
> stop failed
> 0:00:03.744152376 501 0x10ec96c0 WARN v4l2bufferpool
> gstv4l2bufferpool.c:1042:gst_v4l2_buffer_pool_stop:<v4l2src0:pool:src>
> some buffers are still outstanding
> 0:00:03.744178296 501 0x10ec96c0 WARN bufferpool
> gstbufferpool.c:567:gst_buffer_pool_set_active:<v4l2src0:pool:src>
> stop failed
> Setting pipeline to NULL ...
> Total time: 0.013650 seconds
> Freeing pipeline ...
>
>
> I was hoping someone might have a suggestion as to what I might be missing.
> Ideally, I'd like to get two IMX290 cameras operational with one in
> 4-lane mode and one in 2-lane mode.
>
> Might anyone have any suggestions? According to the media-ctl
> --print-dot, the pipeline appears correct, but there is clearly
> something I am missing.
>
> thanks for any suggestions,
>
> adam
--
Regards,
Niklas Söderlund
