eLinux.org:Jetson/L4T/Camera BringUp

Get Prepared

• 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

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=5
export enableCamScfLogs=5
/usr/sbin/argus_daemon      option for argus
/usr/sbin/nvcamera-daemon   option for gst-launch
 
launch camera from another console