Error with two cameras on single CSI port with vc-id

Hello,

I have been working on implementing a TX2 with MAX9286 GMSL deserializer that has two MAX9271 serializers and OV10635 image sensors (1280x800 30fps) attached. I have the DeSer configured to output the frame sync clock to the cameras and the sensors are configured to use the external FSIN input. As you will see in the data, I actually have 3 DeSers all on separate I2C busses and seperate CSI channels, each with 2 cameras.

With DeSer, 2x Ser, and 2x sensors in device tree with vc-id and vc_id parameters set to 0 and 1 I can successfully probe all devices and create /dev/vid* devices, however, I can not capture from either sensor when they are both initialized. If I limit my driver to only initialize one sensor, it can be the sensor assigned vc-id 0 or 1, then I can capture frames successfully from either sensor.

Following https://elinux.org/Jetson_TX2_Camera_BringUp I boost all clocks (and confirm them) then enabling the debug output for the tegra camera driver I run this command

v4l2-ctl -d /dev/video0 --set-fmt-video=width=1280,height=800,pixelformat=UYVY --set-ctrl bypass_mode=0 --stream-mmap --stream-count=1 --verbose

and see the following trace messages:

gst-launch-1.0-4957  [002] ....  2585.775118: tegra_channel_open: vi-output, ov10635 1-0031
  gst-launch-1.0-4957  [002] ....  2585.776389: tegra_channel_set_power: ov10635 1-0031 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.776400: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [002] ....  2585.781859: tegra_channel_set_power: 150c0000.nvcsi--4 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.781862: csi_s_power: enable : 0x1
  gst-launch-1.0-4957  [002] ....  2585.784388: tegra_channel_close: vi-output, ov10635 1-0031
  gst-launch-1.0-4957  [002] ....  2585.784392: tegra_channel_set_power: ov10635 1-0031 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.784396: camera_common_s_power: status : 0x0
  gst-launch-1.0-4957  [002] ....  2585.784460: tegra_channel_set_power: 150c0000.nvcsi--4 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.784462: csi_s_power: enable : 0x0
  gst-launch-1.0-4957  [002] ....  2585.784749: tegra_channel_open: vi-output, ov10635 1-0032
  gst-launch-1.0-4957  [002] ....  2585.784753: tegra_channel_set_power: ov10635 1-0032 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.784758: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [002] ....  2585.790197: tegra_channel_set_power: 150c0000.nvcsi--3 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.790200: csi_s_power: enable : 0x1
  gst-launch-1.0-4957  [002] ....  2585.790480: tegra_channel_close: vi-output, ov10635 1-0032
  gst-launch-1.0-4957  [002] ....  2585.790484: tegra_channel_set_power: ov10635 1-0032 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.790487: camera_common_s_power: status : 0x0
  gst-launch-1.0-4957  [002] ....  2585.790551: tegra_channel_set_power: 150c0000.nvcsi--3 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.790553: csi_s_power: enable : 0x0
  gst-launch-1.0-4957  [002] ....  2585.790796: tegra_channel_open: vi-output, ov10635 2-0031
  gst-launch-1.0-4957  [002] ....  2585.790801: tegra_channel_set_power: ov10635 2-0031 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.790807: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [001] ....  2585.796276: tegra_channel_set_power: 150c0000.nvcsi--6 : 0x1
  gst-launch-1.0-4957  [001] ....  2585.796283: csi_s_power: enable : 0x1
  gst-launch-1.0-4957  [001] ....  2585.796645: tegra_channel_close: vi-output, ov10635 2-0031
  gst-launch-1.0-4957  [001] ....  2585.796650: tegra_channel_set_power: ov10635 2-0031 : 0x0
  gst-launch-1.0-4957  [001] ....  2585.796654: camera_common_s_power: status : 0x0
  gst-launch-1.0-4957  [001] ....  2585.796716: tegra_channel_set_power: 150c0000.nvcsi--6 : 0x0
  gst-launch-1.0-4957  [001] ....  2585.796718: csi_s_power: enable : 0x0
  gst-launch-1.0-4957  [001] ....  2585.796975: tegra_channel_open: vi-output, ov10635 2-0032
  gst-launch-1.0-4957  [001] ....  2585.796980: tegra_channel_set_power: ov10635 2-0032 : 0x1
  gst-launch-1.0-4957  [001] ....  2585.796986: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [002] ....  2585.802433: tegra_channel_set_power: 150c0000.nvcsi--5 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.802435: csi_s_power: enable : 0x1
  gst-launch-1.0-4957  [002] ....  2585.802742: tegra_channel_close: vi-output, ov10635 2-0032
  gst-launch-1.0-4957  [002] ....  2585.802746: tegra_channel_set_power: ov10635 2-0032 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.802750: camera_common_s_power: status : 0x0
  gst-launch-1.0-4957  [002] ....  2585.802810: tegra_channel_set_power: 150c0000.nvcsi--5 : 0x0
  gst-launch-1.0-4957  [002] ....  2585.802812: csi_s_power: enable : 0x0
  gst-launch-1.0-4957  [002] ....  2585.803053: tegra_channel_open: vi-output, ov10635 7-0031
  gst-launch-1.0-4957  [002] ....  2585.803058: tegra_channel_set_power: ov10635 7-0031 : 0x1
  gst-launch-1.0-4957  [002] ....  2585.803063: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [001] ....  2585.808451: tegra_channel_set_power: 150c0000.nvcsi--2 : 0x1
  gst-launch-1.0-4957  [001] ....  2585.808454: csi_s_power: enable : 0x1
  gst-launch-1.0-4957  [001] ....  2585.808489: tegra_channel_close: vi-output, ov10635 7-0031
  gst-launch-1.0-4957  [001] ....  2585.808492: tegra_channel_set_power: ov10635 7-0031 : 0x0
  gst-launch-1.0-4957  [001] ....  2585.808495: camera_common_s_power: status : 0x0
  gst-launch-1.0-4957  [001] ....  2585.808504: tegra_channel_set_power: 150c0000.nvcsi--2 : 0x0
  gst-launch-1.0-4957  [001] ....  2585.808505: csi_s_power: enable : 0x0
  gst-launch-1.0-4957  [001] ....  2585.866050: tegra_channel_open: vi-output, ov10635 1-0031
  gst-launch-1.0-4957  [001] ....  2585.866065: tegra_channel_set_power: ov10635 1-0031 : 0x1
  gst-launch-1.0-4957  [001] ....  2585.866075: camera_common_s_power: status : 0x1
  gst-launch-1.0-4957  [001] ....  2585.871566: tegra_channel_set_power: 150c0000.nvcsi--4 : 0x1
  gst-launch-1.0-4957  [001] ....  2585.871571: csi_s_power: enable : 0x1
    v4l2src0:src-4961  [000] ....  2585.881535: tegra_channel_capture_setup: vnc_id 0 W 1280 H 800 fmt cb
 vi-output, ov10-4965  [001] ....  2585.881707: tegra_channel_set_stream: enable : 0x1
 vi-output, ov10-4965  [001] ....  2585.883366: tegra_channel_set_stream: 150c0000.nvcsi--4 : 0x1
 vi-output, ov10-4965  [001] ....  2585.883370: csi_s_stream: enable : 0x1
 vi-output, ov10-4965  [001] ....  2585.883411: tegra_channel_set_stream: ov10635 1-0031 : 0x1
     kworker/1:2-4702  [001] ....  2585.904350: rtos_queue_peek_from_isr_failed: tstamp:80985871108 queue:0x0b4b4500
     kworker/1:2-4702  [001] ....  2585.904356: rtcpu_start: tstamp:80985871986
     kworker/1:2-4702  [001] ....  2585.904360: rtos_queue_send_from_isr_failed: tstamp:80985879819 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2585.904362: rtos_queue_send_from_isr_failed: tstamp:80985879927 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2585.904364: rtos_queue_send_from_isr_failed: tstamp:80985880033 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2585.904366: rtos_queue_send_from_isr_failed: tstamp:80985880141 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2585.904368: rtos_queue_send_from_isr_failed: tstamp:80985880246 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2585.904370: rtos_queue_send_from_isr_failed: tstamp:80985880352 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2585.904400: rtos_queue_send_from_isr_failed: tstamp:80985880457 queue:0x0b4b0e58
     kworker/1:2-4702  [001] ....  2585.904402: rtos_queue_send_from_isr_failed: tstamp:80985880562 queue:0x0b4b1c18
     kworker/1:2-4702  [001] ....  2585.904404: rtos_queue_send_failed: tstamp:80985881029 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2585.904406: rtos_queue_send_failed: tstamp:80985881802 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2585.904408: rtcpu_vinotify_event: tstamp:80985943986 tag:CSIMUX_STREAM channel:0xff frame:0 vi_tstamp:80985943615 data:0x00000100
 vi-output, ov10-4965  [001] ....  2585.909343: tegra_channel_capture_frame: sof:2585.464940619
     kworker/1:2-4702  [001] ....  2585.960355: rtcpu_vinotify_event: tstamp:80986749480 tag:CHANSEL_PXL_SOF channel:0x00 frame:110 vi_tstamp:80986748789 data:0x00000001
     kworker/1:2-4702  [001] ....  2585.960358: rtcpu_vinotify_event: tstamp:80986749645 tag:ATOMP_FS channel:0x00 frame:110 vi_tstamp:80986748795 data:0x00000000
     kworker/1:2-4702  [001] ....  2585.960359: rtcpu_vinotify_event: tstamp:80986749763 tag:CHANSEL_FAULT channel:0x00 frame:110 vi_tstamp:80986749201 data:0x00000100
     kworker/1:2-4702  [001] ....  2585.960361: rtcpu_vinotify_event: tstamp:80986750606 tag:CHANSEL_LOAD_FRAMED channel:0x04 frame:110 vi_tstamp:80986749899 data:0x08000000
     kworker/1:2-4702  [001] ....  2585.960363: rtcpu_vinotify_event: tstamp:80986750715 tag:CHANSEL_FAULT_FE channel:0x04 frame:110 vi_tstamp:80986750030 data:0x00000001
     kworker/1:2-4702  [001] ....  2585.960365: rtcpu_vinotify_event: tstamp:80986750855 tag:ATOMP_FE channel:0x00 frame:110 vi_tstamp:80986750030 data:0x00000000
     kworker/1:2-4702  [001] ....  2586.072338: rtos_queue_peek_from_isr_failed: tstamp:80990871437 queue:0x0b4b4500
     kworker/1:2-4702  [001] ....  2586.128328: rtos_queue_send_from_isr_failed: tstamp:80993593432 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.128330: rtos_queue_send_from_isr_failed: tstamp:80993593541 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2586.128331: rtos_queue_send_from_isr_failed: tstamp:80993593648 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2586.128333: rtos_queue_send_from_isr_failed: tstamp:80993593756 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2586.128334: rtos_queue_send_from_isr_failed: tstamp:80993593860 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2586.128335: rtos_queue_send_from_isr_failed: tstamp:80993593963 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2586.128360: rtos_queue_send_from_isr_failed: tstamp:80993594067 queue:0x0b4b0e58
     kworker/1:2-4702  [001] ....  2586.128362: rtos_queue_send_from_isr_failed: tstamp:80993594172 queue:0x0b4b1c18
     kworker/1:2-4702  [001] ....  2586.128363: rtos_queue_send_failed: tstamp:80993594734 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.128364: rtos_queue_send_failed: tstamp:80993595014 queue:0x0b4a7258
 vi-output, ov10-4965  [001] ....  2586.128542: tegra_channel_capture_setup: vnc_id 0 W 1280 H 800 fmt cb
 vi-output, ov10-4965  [001] ....  2586.128573: tegra_channel_capture_frame: sof:2585.464940619
 vi-output, ov10-4965  [001] ....  2586.142462: tegra_channel_capture_frame: sof:2585.698080603
     kworker/1:2-4702  [001] ....  2586.184343: rtos_queue_send_from_isr_failed: tstamp:80993599526 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.184346: rtos_queue_send_from_isr_failed: tstamp:80993599634 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2586.184348: rtos_queue_send_from_isr_failed: tstamp:80993599740 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2586.184350: rtos_queue_send_from_isr_failed: tstamp:80993599848 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2586.184352: rtos_queue_send_from_isr_failed: tstamp:80993599953 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2586.184354: rtos_queue_send_from_isr_failed: tstamp:80993600058 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2586.184356: rtos_queue_send_from_isr_failed: tstamp:80993600163 queue:0x0b4b0e58
     kworker/1:2-4702  [001] ....  2586.184358: rtos_queue_send_from_isr_failed: tstamp:80993600268 queue:0x0b4b1c18
     kworker/1:2-4702  [001] ....  2586.184360: rtos_queue_send_failed: tstamp:80993600715 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.184362: rtos_queue_send_failed: tstamp:80993601706 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.184397: rtcpu_vinotify_event: tstamp:80993602668 tag:CSIMUX_STREAM channel:0xff frame:0 vi_tstamp:80993601438 data:0x00000100
     kworker/1:2-4702  [001] ....  2586.184399: rtcpu_vinotify_event: tstamp:80994035233 tag:CHANSEL_PXL_SOF channel:0x00 frame:117 vi_tstamp:80994034538 data:0x00000001
     kworker/1:2-4702  [001] ....  2586.184401: rtcpu_vinotify_event: tstamp:80994035393 tag:ATOMP_FS channel:0x00 frame:117 vi_tstamp:80994034544 data:0x00000000
     kworker/1:2-4702  [001] ....  2586.184403: rtcpu_vinotify_event: tstamp:80994035511 tag:CHANSEL_FAULT channel:0x00 frame:117 vi_tstamp:80994034950 data:0x00000100
     kworker/1:2-4702  [001] ....  2586.184405: rtcpu_vinotify_event: tstamp:80994036362 tag:CHANSEL_LOAD_FRAMED channel:0x04 frame:117 vi_tstamp:80994035654 data:0x08000000
     kworker/1:2-4702  [001] ....  2586.184406: rtcpu_vinotify_event: tstamp:80994036471 tag:CHANSEL_FAULT_FE channel:0x04 frame:117 vi_tstamp:80994035778 data:0x00000001
     kworker/1:2-4702  [001] ....  2586.184408: rtcpu_vinotify_event: tstamp:80994036611 tag:ATOMP_FE channel:0x00 frame:117 vi_tstamp:80994035778 data:0x00000000
     kworker/1:2-4702  [001] ....  2586.240340: rtos_queue_peek_from_isr_failed: tstamp:80995871431 queue:0x0b4b4500
 vi-output, ov10-4965  [001] ....  2586.376583: tegra_channel_capture_setup: vnc_id 0 W 1280 H 800 fmt cb
 vi-output, ov10-4965  [001] ....  2586.376615: tegra_channel_capture_frame: sof:2585.698080603
 vi-output, ov10-4965  [001] ....  2586.408912: tegra_channel_capture_frame: sof:2585.964526225
     kworker/1:2-4702  [001] ....  2586.412364: rtos_queue_send_from_isr_failed: tstamp:81000843064 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412367: rtos_queue_send_from_isr_failed: tstamp:81000843174 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2586.412369: rtos_queue_send_from_isr_failed: tstamp:81000843282 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2586.412371: rtos_queue_send_from_isr_failed: tstamp:81000843388 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2586.412373: rtos_queue_send_from_isr_failed: tstamp:81000843493 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2586.412375: rtos_queue_send_from_isr_failed: tstamp:81000843597 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2586.412376: rtos_queue_send_from_isr_failed: tstamp:81000843700 queue:0x0b4b0e58
     kworker/1:2-4702  [001] ....  2586.412378: rtos_queue_send_from_isr_failed: tstamp:81000843807 queue:0x0b4b1c18
     kworker/1:2-4702  [001] ....  2586.412381: rtos_queue_send_failed: tstamp:81000844366 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412383: rtos_queue_send_failed: tstamp:81000844646 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412386: rtos_queue_peek_from_isr_failed: tstamp:81000871421 queue:0x0b4b4500
     kworker/1:2-4702  [001] ....  2586.412388: rtos_queue_send_from_isr_failed: tstamp:81001350685 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412389: rtos_queue_send_from_isr_failed: tstamp:81001350793 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2586.412391: rtos_queue_send_from_isr_failed: tstamp:81001350901 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2586.412392: rtos_queue_send_from_isr_failed: tstamp:81001351006 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2586.412394: rtos_queue_send_from_isr_failed: tstamp:81001351111 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2586.412395: rtos_queue_send_from_isr_failed: tstamp:81001351216 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2586.412397: rtos_queue_send_from_isr_failed: tstamp:81001351321 queue:0x0b4b0e58
     kworker/1:2-4702  [001] ....  2586.412398: rtos_queue_send_from_isr_failed: tstamp:81001351426 queue:0x0b4b1c18
     kworker/1:2-4702  [001] ....  2586.412400: rtos_queue_send_failed: tstamp:81001351878 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412401: rtos_queue_send_from_isr_failed: tstamp:81001352389 queue:0x0b4a7258
     kworker/1:2-4702  [001] ....  2586.412403: rtos_queue_send_from_isr_failed: tstamp:81001352497 queue:0x0b4aad00
     kworker/1:2-4702  [001] ....  2586.412404: rtos_queue_send_from_isr_failed: tstamp:81001352594 queue:0x0b4aad68
     kworker/1:2-4702  [001] ....  2586.412405: rtos_queue_send_from_isr_failed: tstamp:81001352690 queue:0x0b4ac930
     kworker/1:2-4702  [001] ....  2586.412407: rtos_queue_send_from_isr_failed: tstamp:81001352786 queue:0x0b4ac998
     kworker/1:2-4702  [001] ....  2586.412408: rtos_queue_send_from_isr_failed: tstamp:81001352883 queue:0x0b4ae4b0
     kworker/1:2-4702  [001] ....  2586.412409: rtos_queue_send_from_isr_failed: tstamp:81001352979 queue:0x0b4ae518
     kworker/1:2-4702  [001] ....  2586.412411: rtos_queue_send_from_isr_failed: tstamp:81001353075 queue:0x0b4af270
     kworker/1:2-4702  [001] ....  2586.412412: rtos_queue_send_from_isr_failed: tstamp:81001353171 queue:0x0b4af2d8
     kworker/1:2-4702  [001] ....  2586.412413: rtos_queue_send_from_isr_failed: tstamp:81001353267 queue:0x0b4b0030
     kworker/1:2-4702  [001] ....  2586.412415: rtos_queue_send_from_isr_failed: tstamp:81001353363 queue:0x0b4b0098
     kworker/1:2-4702  [001] ....  2586.412416: rtos_queue_send_from_isr_failed: tstamp:81001353458 queue:0x0b4b0df0

The trace shows that frame counter is incrementing, and some of the tags are in the correct order, but there is an error of CHANSEL_FAULT = 0x100 which means PIXEL_LONG_LINE.

In order to get MAX9286 to sync cameras I begin streaming both cameras during probe.

I will continue to try changing frame width and confirming MAX9286 video link locks both cameras, but I am wondering if there are some other debugging steps I can take to extract more information, perhaps a raw data dump of CSI input?

As others have noted, there is no public documentation for the vc-id properties or using virtual channel ID yet, is that information available yet? I have referenced the IMX390 vc-id example in the source which uses GMSL2 components MAX9295 and MAX9296, and I believe the only thing that pertains to me are the vc-id and vc_id properties, but it would be nice to confirm. The rest of the issue must be in deserializer configuration and order of operations for the sensor streaming, but it is difficult to troubleshoot so any assistance is welcome.

Finally, this error message

kworker/1:2-4702  [001] ....  2585.904362: rtos_queue_send_from_isr_failed: tstamp:80985879927 queue:0x0b4aad68

I have read in this forum that it can be ignored, so is there a way to suppress the message since it occurs so frequently?

Andy

The root cause should be the PIXEL_LONG_LINE
There’s a imx390 that for the virtual channel reference board.

…/hardware/nvidia/platform/t18x/common/kernel-dts/t18x-common-modules/tegra186-camera-imx390-a00.dtsi

Thank you Shane, I have continued investigating:

After setting my device tree and driver to 2560 wide frame size I am able to capture frames with v4l2-ctl when requesting 2560 wide frames. Viewing the RAW image that is captured with http://rawpixels.net/ (UYVY mode) I can see that I am receiving a single frame with two perfect images side by side…to be more detailed, when streaming /dev/video0 the left half of the frame is a perfectly rendered image from the camera attached to /dev/video0 and the right half of the frame is just green pixels which may be an image from /dev/video1 since I have the DeSer set to mask out that link (both video0 and video1 are connected to the same deserializer and are vc-id 0 and 1 respectively).

It seems that I am very close to having this working, but something is not set correctly to split the frames. My deserializer is configured to set virtual channels according to the link number, and I am using JetPack 4.2.1 (L4T 32.2).

Any thoughts?

That could be the SerDes configure to wrong mode.
NVCSI/VI won’t merge the two different vc-id frames as a frame.

Ok, thank you.

I have been adjusting settings of the deserializer and I have been able to confirm that the 2560px wide image that v4l2-ctl is capturing is indeed both cameras. I removed the link mask and am now getting two complete images, from the two separate cameras on the MAX9286, as a single frame.

Is there anyway to see the data that is being received from the deserializer? It seems that the frame combiner function in the MAX9286 must not be set right, but there are very few references to its configuration in the datasheet, and there are also only a few settings that can be adjusted anyway.

Andy

You may need consult to the vendor to get more detail information.

I talked to the Maxim and they provided me with an undocumented register setting to fix the issue. They said nvidia is the only one that currently uses this mode and in the past nvidia has provided the reserved register value. In any case, this topic should be settled now.