L4T 32.5.1 Unable to Update DTB

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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The dtb file provided by the camera vendor is tegra194-p2888-0001-p2822-0000.dtb .

He has also seperately provided an Image , which I am using to update the kernel and putting it inside /boot/

The camera vendor in question is Appropho and this camera is specifically made for Jetson AGX Xavier.

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Can you use dtc tool to convert this dtb back to dts and attach it here?

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tegra194-p2888-0001-p2822-0000.dts (270.2 KB)

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Looks like the dtb is not flashed to the board. Could you try to use “-r -k kernel-dtb” to flash the dtb partition?

Also, could you attach the full log from host when you run the command?

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flash_log.txt (14.8 KB)

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This BSP folder didn’t do any full flash before?

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NO , I just downloaded the L4T package on my host , replaced files as camera provider said and trying to flash , without -r , the flash is successful and I get " DTB is updated successfully " !!

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Could you share the log?

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Can you use the BSP that was used to flash the board to do the work?

Or can you just try to use a full flash first? And then you can use -r -k.

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Without using -r, I am able to successfully flash the board, it says DTB is updated, but actually, DTB is not updated.

As I am replacing the dtb file with the custom dtb file provided b the camera provider, Is secure boot preventing to loading this custom dtb file as it is not signed and encrypted ?
xavier_flash.txt (28.5 KB)

I’ve used sudo ./flash.sh --no-flash -k kernel-dtb jetson-xavier mmcblk0p1 to get the signed copy of the custom dtb file , will try to flash again now with " -r " !!

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Yes, do a full flash to see if the dtb would be updated or not.

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Hi Wayne,

The problem is solved:-

  1. USed Nvidia SDK Manager to flash AGX Xavier !!

  2. DID NOT MIGRATE THE SYSTEM TO SSD as I Usually do using the below Jetson Hacks link !!

  3. Followed Steps as provided by the Camera.

  4. DTB has flashed actually and I can see the devices ( camera ) mounted.

Now the question is once we migrate and run Xavier from SSD using this blog, what is the problem.

if I migrated to SSD in Step 2, I am unable to flash the DTB.

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Can you compare the uart log between working case and non working case?

I checked your log yesterday but it still read the dtb from emmc. Not sure why your dtb didn’ get update.

Also, this release is kind of old, so I am not sure whether there is a bug or not.

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