Vanilla OpenWRT on BE3600?

Hello there,
anyone has indication on how to build a vanilla OpenWRT image for the BE3600?
Thank you.

BE3600 stock firmware is based on the QSDK fork of Openwrt 23.05-SNAPSHOT:

Here's your first problem, the ipq53xx chipset is not yet supported by native Openwrt.

You could probably build a QSDK vanilla Openwrt, either by requesting access to the GL infra builder to do so, or by using the above Code Linaro QSDK fork of Openwrt.

It's going to be a while before the ipq53xx architecture is supported, it will probably be called qualcommbe, and qualcommax has only just been added.