hi ，all We need to use NX core board to develop a system with one camera，we use a HDMI2MIPI chip(lt6911uxc) that output mipi-cs2 signal. camera connects CSI0 with 2 lane. our L4T version is 32.6.1. I find in BSP source has a LT6911UXC driver,( Linux_for_Tegra/source/public/kernel/nvidia/drivers/m…

This power depend on your HW, If your HW don’t need it then you can comment it out.

v4l2-ctl --all Driver Info (not using libv4l2): Driver name : tegra-video Card type : vi-output, lt6911uxc 1-002b Bus info : platform:15c10000.vi:0 Driver version: 4.9.253 Capabilities : 0x84200001 Video Capture Streaming Extended Pix Format Device Capabilities Device Caps :…

I modified tegra194-camera-e2832.dtsi: / { host1x { vi@15c10000 { num-channels = <1>; ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; e2832_vi_in0: endpoint { port-index = <0>; bus-width = <2>; remote-endpoint = <&e2832_csi_out0>; }; }; }; }; nvcsi@15a00000 { …

hi CCC：what trace log do we need？

Check this link for the instruction to enable the trace log.

@ShaneCCC “Check this link” mean that check HDMITOMIPI physical connect?

Sorry didn’t post the link. https://elinux.org/Jetson/l4t/Camera_BringUp

@ShaneCCC cat /sys/kernel/debug/tracing/trace tracer: nop entries-in-buffer/entries-written: 81/81 #P:6 _-----=> irqs-off / _----=> need-resched | / _—=> hardirq/softirq || / _–=> preempt-depth ||| / delay TASK-PID CPU# |||| TIMESTAMP FUNCTION | | | |||| | | k…

The trace log show didn’t receive any validate data from MIPI bus. Did you probe the signal to confirm it?

@ShaneCCC [微信图片_20211103163207] IThe mipi clock signal exists so is our DTS configured correctly？

Hdmitomipi ,v4l2-ctl report error

Robotics & Edge Computing Jetson Systems Jetson Xavier NX

lijiangning November 4, 2021, 11:54am 19

@ShaneCCC What should the pix_clk_hz shoud be？

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Hdmitomipi ,v4l2-ctl report error

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