On Tue, Oct 23, 2018 at 6:03 PM jacopo mondi <jacopo@xxxxxxxxxx> wrote: > > Hi Adam, > > On Tue, Oct 23, 2018 at 12:54:12PM -0500, Adam Ford wrote: > > On Tue, Oct 23, 2018 at 12:39 PM Steve Longerbeam > > <steve_longerbeam@xxxxxxxxxx> wrote: > > > > > > > > > On 10/23/18 10:34 AM, Adam Ford wrote: > > > > On Tue, Oct 23, 2018 at 11:36 AM Steve Longerbeam > > > > <steve_longerbeam@xxxxxxxxxx> wrote: > > > >> Hi Adam, > > > >> > > > >> On 10/23/18 8:19 AM, Adam Ford wrote: > > > >>> On Mon, Oct 22, 2018 at 7:40 AM Fabio Estevam <festevam@xxxxxxxxx> wrote: > > > >>>> Hi Adam, > > > >>>> > > > >>>> On Mon, Oct 22, 2018 at 9:37 AM Adam Ford <aford173@xxxxxxxxx> wrote: > > > >>>> > > > >>>>> Thank you! This tutorial web site is exactly what I need. The > > > >>>>> documentation page in Linux touched on the media-ctl links, but it > > > >>>>> didn't explain the syntax or the mapping. This graphical > > > >>>>> interpretation really helps it make more sense. > > > >>>> Is capturing working well on your i.MX6 board now? > > > >>> Fabio, > > > >>> > > > >>> Unfortunately, no. I built the rootfs based on Jagan's instructions > > > >>> at https://openedev.amarulasolutions.com/display/ODWIKI/i.CoreM6+1.5 > > > >>> > > > >>> I tried building both the 4.15-RC6 kernel, a 4.19 kernel and a 4.14 LTS kernel. > > > >>> > > > >>> Using the suggested method of generating the graphical display of the > > > >>> pipeline options, I am able to enable various pipeline options > > > >>> connecting different /dev/videoX options tot he camera. I have tried > > > >>> both the suggested method above as well as the instructions found in > > > >>> Documentation/media/v4l-drivers/imx.rst for their respective kernels, > > > >>> and I have tried multiple options to capture through > > > >>> ipu1_csi1_capture, ipu2_csi1_capture, and ip1_ic_prepenc capture, and > > > >>> all yield a broken pipe. > > > >>> > > > >>> libv4l2: error turning on stream: Broken pipe > > > >>> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could > > > >>> not read from resource. > > > >>> Additional debug info: > > > >>> gstv4l2bufferpool.c(1064): gst_v4l2_buffer_pool_poll (): > > > >>> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: > > > >>> poll error 1: Broken pipe (32) > > > >>> > > > >>> I can hear the camera click when I start gstreamer and click again > > > >>> when it stops trying to stream. > > > >>> > > > >>> dmesg indicates a broken pipe as well.. > > > >>> > > > >>> [ 2419.851502] ipu2_csi1: pipeline start failed with -32 > > > >>> > > > >>> might you have any suggestions? > > > >> > > > >> This -EPIPE error might mean you have a mis-match of resolution, pixel > > > >> format, or field type between one of the source->sink pad links. You can > > > >> find out which pads have a mis-match by enabling dynamic debug in the > > > >> kernel function __media_pipeline_start. > > > > Following Jagan's suggestion, I tried to make sure all the resolution > > > > and pixel formats were set the same between each source and sink. > > > > > > > > media-ctl --set-v4l2 "'ov5640 2-0010':0[fmt:UYVY2X8/640x480 > > > > field:none]" > > > > media-ctl --set-v4l2 "'imx6-mipi-csi2':1[fmt:UYVY2X8/640x480 > > > > field:none]" > > > > media-ctl --set-v4l2 "'ipu1_csi0_mux':2[fmt:UYVY2X8/640x480 > > > > field:none]" > > > > media-ctl --set-v4l2 "'ipu1_csi0':2[fmt:AYUV32/640x480 field:none]" > > > > > > > >> Also make sure you are attempting to stream from the correct /dev/videoN. > > > > I have graphically plotted the pipeline using media-ctl --print-dot > > > > and I can see the proper video is routed, but your dynamic debug > > > > suggestion yielded something: > > > > > > > > imx-media capture-subsystem: link validation failed for 'ov5640 > > > > 2-0010':0 -> 'imx6-mipi-csi2':0, error -32 > > > > > > > > > It's what I expected, you have a format mismatch between those pads. > > > > Is the mismatch something I am doing wrong with: > > > > media-ctl --set-v4l2 "'ov5640 2-0010':0[fmt:UYVY2X8/640x480 field:none]" > > media-ctl --set-v4l2 "'imx6-mipi-csi2':2[fmt:UYVY2X8/640x480 field:none]" > > > > Could you try to verify the actual format configured on the sensor? > (media-ctl --get-v4l2 "'ov5640 2-0010':0"). > > Depending on the driver version you are running, you might be affected > by different regressions. > > > or is there something else I need to do? I just used Jagan's suggestion. > > I suggest you to update the driver version to the last one available > in the media-tree master, or at least try to backport the following > commit: > fb98e29 media: ov5640: fix mode change regression > > If it turns out the format and mode configured on the sensor do not > match the one you want. > > Thanks That got me past one hurdle. Wtih your help, I was able to confirm the mis-match of the modes between the sensor and the csi1 source. I applied the patch as you suggested, but now I get a new error. [ 295.294370] imx6-mipi-csi2: LP-11 timeout, phy_state = 0x00000230 [ 295.300681] ipu1_csi0: pipeline start failed with -110 I am going to go through various patches to the imx framework and ov5640 driver to see if I can find the solution, but if you have suggestions as to which fixes are appropriate, I'll test those. If I can get this working, would it make sense for me to submit some requests with kernel-stable to backport some of these commits to 4.19 and if applicable, 4.14 too? adam > j > > > adam > > > > > > Steve > > > > > > > > > > > > > > I am assume this means the interface between the camera and the csi2 > > > > isn't working. I am going to double check the power rails and the > > > > clocks. i can hear it click when activated and deactivated, so > > > > something is happening. > > > > > > > > adam > > > > > > > >> Steve > > > >>
