About V4l2 drive problems

Autonomous Machines Jetson & Embedded Systems Jetson TX1
#1

Hello，

now I am using the V4l2 driver to capture the video data, but all I get is a mipi timeout error, I think the mipi parameter I configured is normal, but the resulting mipi register status has been constantly changing, how should I go to debug？
Here is my serial debugging information：
[ 609.065702] vi vi: SH[csi_port: 0, numlanes:4, total_ports:1]
[ 609.073784] tegra_mipi_cal 700e3000.mipical: Mipi cal timeout:30937
[ 609.080534] tegra_mipi_cal 700e3000.mipical: Mipi cal timeout,val:110000, lanes:300000
[ 610.080883] video4linux video0: frame start syncpt timeout!0
[ 610.087699] vi vi: SH[csi_port: 0, numlanes:4, total_ports:1]
[ 610.097146] tegra_mipi_cal 700e3000.mipical: Mipi cal timeout:31039
[ 611.099500] video4linux video0: frame start syncpt timeout!0
[ 611.105499] vi vi: SH[csi_port: 0, numlanes:4, total_ports:1]
[ 611.113601] tegra_mipi_cal 700e3000.mipical: Mipi cal timeout:31141
[ 611.122205] tegra_mipi_cal 700e3000.mipical: Mipi cal timeout,val:110000, lanes:300000
[ 612.129627] video4linux video0: frame start syncpt timeout!0

Thank you.

#2

hello shrambo,

according to below, this means driver side did not detect the sensor signaling of the frame start.

[ 610.080883] video4linux video0: frame start syncpt timeout!0

since this should be bring-up stage issue.
i would suggest you measuring the hardware signaling to check the sensor side is worked as expect.
and then confirm all the configuration in your sensor device tree are match the sensor specification.
thanks

#3