How to test hardware signal for MIPI port at jetson TX1 R28.2?

How to test hardware signal for MIPI port at jetson TX1 R28.2?

I can not find the signal for mipi clk,mipi lan.

[ 1137.209176] vi 54080000.vi: tegra_channel_error_status:error 20022 frame 147
[ 1137.216410] vi 54080000.vi: tegra_channel_error_status:error 22 frame 148
[ 1137.223283] vi 54080000.vi: tegra_channel_error_status:error 22 frame 149
[ 1137.230215] vi 54080000.vi: tegra_channel_error_status:error 20022 frame 150
[ 1137.237338] vi 54080000.vi: tegra_channel_error_status:error 20022 frame 151
[ 1137.244496] vi 54080000.vi: tegra_channel_error_status:error 20022 frame 152
[ 1137.251614] vi 54080000.vi: tegra_channel_error_status:error 20022 frame 153
[ 1137.335813] video4linux video0: frame start syncpt timeout!0

hardware signals?
are you testing ov5693?