AM6442: AM6442

我把您的问题升级到英文e2e论坛了，请关注下面帖子的回复。
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1159806/am6442-how-to-use-dtbo-to-overlay-dtb-file

抱歉回复晚了，请看下面工程师的回复。

To confirm, has the customer looked at this documentation?
https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/08_04_01_04/exports/docs/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU_ICSSG_Ethernet.html#mii-support

For more information, see this post:
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1137215/tmds64gpevm-eth1-port-is-cpsw-instead-of-prueth

I tested the above thread on SDK 8.3. If that does not work, please let me know what software version the customer is using and any other needed information. Note that the dtbo file must be in the Linux filesystem under the /boot/ directory, in the same location as the regular Linux device tree files.

感谢回复，我现在遇到的问题是，无法将dtbo文件，覆盖在我自行构建的dtb文件上，在uboot阶段会报出该错误

failed on fdt_overlay_apply(): FDT_ERR_NOTFOUND
base fdt does did not have a /__symbols__ node
make sure you've compiled with -@
ERROR: Did not find a cmdline Flattened Device Tree

我想咨询的问题是：如何正确的编译出dtb，使dtbo能覆盖在dtb上？

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