BBB as SPI slave

I’m working on SPI communication, especially setting BBB as SPI slave.

I have seen some threads show that it is impossible to configure BBB as SPI slave because linux platform does not support it. But also, I could find some materials that says it is possible through some procedures. Below is what I found about SPI slave driver implementation, wrote in 2016.

It seems that it needs to be updated.

I need to configure BBB as SPI slave in my project.
so if you know how to set BBB as spi slave or if it is a possible option…any info about this theme, I hope you could tell me that.

I really appreciate you read this. Thank you.