Xavier Power Cycle issue

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
1

I am using a xavier Orin module and during the power cycle, we see the following error randomly.:
It can not read information from QSPI and has to power cycle sometime to boot up again.

[0008.202] I> Qspi flash params source = mb1bct
[0008.212] I> Qspi flash params source = mb1bct
[0008.225] I> Qspi flash params source = mb1bct
[0008.291] I> Qspi flash para��

[0000.025] W> RATCHET: MB1 binary ratchet value 4 is larger than ratchet level .
[0000.033] I> MB1 (prd-version: 2.6.0.0-t194-41334769-cab45716)
[0000.039] I> Boot-mode: Coldboot
[0000.041] I> Platform: Silicon
[0000.044] I> Chip revision : A02P
[0000.047] I> Bootrom patch version : 15 (correctly patched)
[0000.053] I> ATE fuse revision : 0x200
[0000.056] I> Ram repair fuse : 0x0
[0000.059] I> Ram Code : 0x1
[0000.062] I> rst_source: 0xa, rst_level: 0x1
[0000.066] I> Boot-device: QSPI (instance: 0)
[0000.070] I> Qspi flash params source = brbct
[0000.074] I> Qspi clock source : pllp
[0000.078] I> Qspi-0 initialized successfully
[0000.082] I> Boot chain mechanism: A/B
[0000.085] I> Current Boot-Chain Slot: 0
[0000.089] E> Error, current slot 0 fails: sr_bl: 0x4d14ef1, sr_br: 0x0
[0000.095] I> Reset to recovery mode

2

Sorry for the late response.
Is this still an issue to support? Any result can be shared?

4

I’m not clear what is “xavier Orin module” here.

Do you mean both Xavier and Orin module hit the same issue?
Are you using the devkit or custom board for AGX Xavier?

What’s your Jetpack version in use?

5

Hi, Kevin
Thank for your quick replay.

  1. We are using a Xavier AGX module for our production development. (My mistake to say it is Xavier Orin.)
  2. We are using our customer designed carrier board, I can share circuit with you if you need.
  3. We are using Jetpack 5.1.3.
  4. When I was doing power cycling, sometime, the MB1 failed and I could not push system reset to recover, i have to cycle power.
  5. Do you have some other customer has similar issue?

Thanks

6

What’s the fail rate in your case?
How did you perform “power cycling”? through reboot command or control the power externally?

Currently, we don’t get the similar issue from other customers.

Is the issue specific to your custom board?
(i.e. could you reproduce the issue on the devkit?)

7

Hi, Kevin.
The evaluation board from nvidia has a power button controlled by the MCU and it never failed.
Out customer designed board does not have a control circuit as Nvidia and it is hard turn on/off both 12V and 5V.

The failure will happen much often if i turn back the power short after I turn off the power. but if I wait 15 seconds or more to turn the unit after i turn off, the system will not fail.

Here is my questions:

  1. What is the minimum time delay required for the +5VDC up after +12VDC turn?
  2. Is there a minimum time required for the down before we can turn it back?
    Please let me know if you understand my questions.
    Best REgards
    Jie Zhou
    Smith & Nephew
9

Hi, it looks like discharging issue. Please check the power off sequence and compare to that of Design Guide or devkit. You may need to add/modify discharge circuit. You can refer to the DG for detail of that.

11

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