HI
目前设计一款适配Orin的载板，但是目前无法开机（外接HDMI显示器无显示）。时序测量如下：
时序上测量基本上是满足PDG的要求，但是仍然无法开机，分析发现WDT_RESET_OUT_N信号一致被置低电平。
目前有几个问题麻烦回复一下：
1、不开机可能是哪些情况导致的？
2、WDT_RESET_OUT_N信号上电为什么会被置低电平？与不开机是否存在关联？
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The provided text does not contain any information related to the question “Jetson AGX Orin HI OrinHDMI 20250903165451 1111612 893 KB PDGWDTRESETOUTN 1 2WDTRESETOUTN”.
However, based on the context, it appears that the question is related to the Jetson AGX Orin module, specifically the HDMI output and watchdog reset.
Unfortunately, without further information or context, it’s difficult to provide a comprehensive answer. The provided text only contains information about the Jetson module’s Force Recovery Mode, software architecture, boot architecture, and flashing procedures, but does not mention anything about HDMI output or watchdog reset.
If you could provide more context or clarify the question, I’ll do my best to provide a helpful and informative answer.
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请人工回复一下，谢谢
Hi cyb1,
What’s the Jetpack version in use?
Could you share the full serial console log for further check?
Could you provide UART boot log?
感谢回复，目前可以正常开机且进入系统桌面了，发现是NVJTAG_SEL的配置错误以及I2C1的接线错误导致的。
但是现在发现一个问题，我们在配置CODEC功能时，发现I2C5无法进行访问，出现以下报错。
通过复查参考设计中的原理图，I2C5同样接到CODEC ALC5640上，排除与参考板设计不一致的问题。但是从参考代码中查询发现，代码中CODEC ALC5640所使用的I2C通道是I2C4，并不是参考板上连接的I2C5。
我的疑问是：
1、I2C5的用途是什么？
2、PDG中有提示是“On-module use only”，意思是只用于核心板上？
3、请确认参考图纸和参考代码是否存在差异，以实际上应该使用哪个通道I2C?
感谢回复，现在已经正常开机且进入系统，原因是NVJTAG_SEL引脚配置和I2C1的连接错误导致。
但现在出现一个I2C5无法访问的问题，详细请查看前一个回复。
Please share UART logs for further insights in to the issue.
感谢回复，目前发现I2C5会出现报错，通过对比参考板上设计，目前使用的I2C通道是与参考板一致的，也是接到CODEC ALC 5640上。同时通过搜索参考代码中ALC 5640的相关信息，代码中的ALC 5640设备是挂载到I2C4上的，这个麻烦确认一下。
其他暂无问题，再次感谢回复！
The I2C controller instances in the design guide are HW instances and numbering starts from 1. In Software the I2C bus numbers starts from 0, so they will be one less than the corresponding HW instance.
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