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== Get Prepared ==
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Move to https://elinux.org/Jetson/l4t/Camera_BringUp
* Please read through "Camera Development" section in https://developer.nvidia.com/embedded/dlc/l4t-documentation-28-1
 
== FAQ ==
 
=== Tips for debugging ===
 
 
 
* if you saw below error message
 
tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
 
 
 
* please check below 4 items in your sensor device tree, these should follow the settings in your sensor datasheet
 
                                mode0 {
 
                                        cil_settletime = "0";
 
                                        active_w = "1920";
 
                                        active_h = "1080";
 
                                        embedded_metadata_height = "1";
 
 
 
* if you saw below error message
 
video4linux video0: MW_ACK_DONE syncpoint time out!
 
 
 
* please check below
 
please review the configuration of "line_length" in sensor driver
 
try to increase the delay between video lines data send via CSI
 
review the sensor datasheet to check the settings of FPS range
 
 
 
* if you saw below message it could be the sensor output embedded data line but DT didn't declare embedded_metadata_height or it value is 0
 
arm-smmu 12000000.iommu: Unhandled context fault: iova=0x00000000, fsynr=0x200011, cb=19, sid=4(0x4 - VI), pgd=0, pud=0, pmd=0, pte=0
 
 
 
 
 
<br />
 
=== Steps to enable more debug messages ===
 
* To enable trace for more information
 
echo 1 > /sys/kernel/debug/tracing/tracing_on
 
echo 30720 > /sys/kernel/debug/tracing/buffer_size_kb
 
echo 1 > /sys/kernel/debug/tracing/events/tegra_rtcpu/enable
 
echo 1 > /sys/kernel/debug/tracing/events/freertos/enable
 
echo 2 > /sys/kernel/debug/camrtc/log-level
 
echo > /sys/kernel/debug/tracing/trace
 
cat /sys/kernel/debug/tracing/trace
 
 
 
* To enable logs from user-space for more details
 
sudo su
 
kill the process of argus_daemon or nvcamera-daemon
 
export enableCamPclLogs=1
 
export enableCamScfLogs=1
 
/usr/sbin/argus_daemon      option for argus
 
/usr/sbin/nvcamera-daemon  option for gst-launch
 
 
 
launch camera from another console
 

Latest revision as of 00:13, 2 June 2021