Hi,
I executed commands as followed to enable log tracing
#!/bin/sh
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 1 > /sys/kernel/debug/tracing/events/camera_common/enable
echo > /sys/kernel/debug/tracing/trace
echo file vi2_fops.c +p > /sys/kernel/debug/dynamic_debug/control
echo file csi2_fops.c +p > /sys/kernel/debug/dynamic_debug/control
echo file vi4_fops.c +p > /sys/kernel/debug/dynamic_debug/control
echo file csi.c +p > /sys/kernel/debug/dynamic_debug/control
echo file csi4_fops.c +p > /sys/kernel/debug/dynamic_debug/control
echo file nvcsi.c +p > /sys/kernel/debug/dynamic_debug/control
cat /sys/kernel/debug/tracing/trace
use v4l2-ctl to capture mipi input, only kernel error messages shows
# tracer: nop
#
# entries-in-buffer/entries-written: 0/0 #P:6
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
root@amoymn:/home/jetson# [ 1492.422697] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 1492.429191] tegra-vi4 15700000.vi: tegra_channel_error_recovery: attempting to reset the capture channel
[ 1492.440449] nvcsi 150c0000.nvcsi: csi4_stream_check_status (0) ERROR_STATUS2VI_VC0 = 0x00000004
[ 1492.650670] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 1492.657070] tegra-vi4 15700000.vi: tegra_channel_error_recovery: attempting to reset the capture channel
[ 1492.667227] nvcsi 150c0000.nvcsi: csi4_stream_check_status (0) ERROR_STATUS2VI_VC0 = 0x00000004
[ 1492.878706] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 1492.885108] tegra-vi4 15700000.vi: tegra_channel_error_recovery: attempting to reset the capture channel
[ 1492.895632] nvcsi 150c0000.nvcsi: csi4_stream_check_status (0) ERROR_STATUS2VI_VC0 = 0x00000004
[ 1493.106740] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 1493.113274] tegra-vi4 15700000.vi: tegra_channel_error_recovery: attempting to reset the capture channel
[ 1493.123142] nvcsi 150c0000.nvcsi: csi4_stream_check_status (0) ERROR_STATUS2VI_VC0 = 0x00000004
[ 1493.334694] tegra-vi4 15700000.vi: PXL_SOF syncpt timeout! err = -11
[ 1493.341111] tegra-vi4 15700000.vi: tegra_channel_error_recovery: attempting to reset the capture channel
[ 1493.352214] nvcsi 150c0000.nvcsi: csi4_stream_check_status (0) ERROR_STATUS2VI_VC0 = 0x00000004
didn’t find any csi tracing log…