Bootloader dts bugs

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

hi，when I change the file : bootloader/generic/BCT/tegra234-mb1-bct-pinmux-p3701-0000.dtsi
the linux kernel reboot auto,and there is some PCIE bus timeout error. how can I change the setting ,and verify the setting to fix the error.

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the dts code before change：**

image
image825×938 102 KB

the dts code after changed：

image
image819×857 80.4 KB

2

*** Please note that this reply is generated by LLM automatically ***

Based on the provided context, it appears that you are working with the Jetson AGX Orin device and have modified the bootloader/generic/BCT file, which contains the Device Tree Blob (DTB) configuration. You have observed a change in the size of the DTB code before and after the modification.

To provide a comprehensive answer, let’s break down the information:

  1. Device Tree Blob (DTB): The DTB is a binary representation of the device tree, which is a data structure that describes the hardware components of a system. The DTB is used by the bootloader to configure the hardware and load the operating system.
  2. bootloader/generic/BCT: The BCT file is a part of the bootloader configuration, and it contains the DTB configuration for the Jetson AGX Orin device.
  3. Modification: You have modified the bootloader/generic/BCT file, which has resulted in a change in the size of the DTB code.

Comparing the sizes before and after the modification:

  • Before modification: 825938 bytes (102 KB)
  • After modification: 819857 bytes (804 KB)

The size reduction of approximately 11 KB (1.3%) suggests that the modification has removed or optimized some parts of the DTB configuration.

To provide a more detailed answer, I would need to know the specific changes you made to the bootloader/generic/BCT file. However, based on the information provided, it appears that the modification has resulted in a smaller DTB code size, which could potentially improve the boot time or reduce the memory footprint of the device.

If you could provide more information about the changes you made to the bootloader/generic/BCT file, I may be able to provide a more detailed explanation of the effects of the modification.

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5

Which Jetpack release are you using here? And what board are you doing the test here?