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Based on the provided context, I will attempt to answer the question.
The question is about the Jetson Orin NX’s PCIe parameter tuning policy, specifically regarding the TX drive strength adjustment. The user is experiencing issues with PCIe Bus Errors during environmental temperature testing with PCIe Gen4 NVMe storage at 70C. The NVMe vendor has indicated that the Orin NX’s PCIe TX signal amplitude appears weak.
Comparing the situation to the Jetson Xavier NX, the user understands that Nvidia does not support PCIe parameter tuning and only provides compliance/routing guidance for the Xavier NX.
For the Jetson Orin NX, the policy regarding PCIe parameter tuning is not explicitly stated in the provided context. However, based on the information available, it appears that the Orin NX does have some level of PCIe tuning capabilities.
In the “Jetson Orin NX Series and Jetson Orin Nano Series Modules Tuning and Compliance Guide” (DA-11267-001_v1.2), there is a section on “PCIe compliance testing” which might imply that some level of tuning is possible. Additionally, in the “Jetson Orin NX Series and Jetson Orin Nano Series Modules Thermal Design Guide” (TDG-11127-001_v1.5), there is a mention of “PCIe Controller Configuration” which could potentially include tuning options.
However, without explicit information on the availability of register-level or device tree parameters for PCIe PHY tuning on Orin NX, it is difficult to confirm whether tuning is supported.
Regarding updated PCIe routing guidelines in the Design Guide to address signal integrity concerns, there is no explicit information available in the provided context.
In summary, while there is some indication that the Jetson Orin NX might have some level of PCIe tuning capabilities, the policy regarding PCIe parameter tuning is not explicitly stated. It is recommended to consult the official Nvidia documentation or contact Nvidia support for more information on this topic.
Comparison to the Jetson Xavier NX:
- The Jetson Xavier NX does not support PCIe parameter tuning, and Nvidia only provides compliance/routing guidance.
- The Jetson Orin NX might have some level of PCIe tuning capabilities, but the policy is not explicitly stated.
Recommendation:
- Consult the official Nvidia documentation or contact Nvidia support for more information on PCIe parameter tuning for the Jetson Orin NX.
- Review the “Jetson Orin NX Series and Jetson Orin Nano Series Modules Tuning and Compliance Guide” and “Jetson Orin NX Series and Jetson Orin Nano Series Modules Thermal Design Guide” for any potential tuning options or guidelines.
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