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Hi
Before installing linuxcnc I need to have a real-time kernel for my orange-pi 4 lts.
I could'nt fine any ready .deb file to install on my board so I've tried to compile one for myself.
But so far I failed over and over again.
I dont know what should I do. Can anyone please help me how can I get through this?
The procedure that I went through:

I've downloaded a 5.10.41 kernel from:
mirrors.edge.kernel.org/pub/linux/kernel/v5.x/

Then I've downloaded the rt patch (5.10.41-rt42) from:
cdn.kernel.org/pub/linux/kernel/projects/rt/5.10/older/

Then I patched it to the kernel, and then used a cross-compiler to compile it:
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- xconfig
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j8 deb-pkg

Then I copied the result created .deb files into my board and then install. but nothing happens and it doesn't switch to new kernel after reboot.
I even manually configure the u-boot settings in order to find and recognize my new kernel files but after doing this the board doesn't boot up at all and just stuck in boot.
what can I do??

I have used the Soyo SY-H110Z full firmware version V3.0 with a modified BIOS and an i3 8100 with low latency.
I am currently using the Supermicro x11ssm-f which has a slightly higher latency than the above motherboard but has two network ports.
Generally, full-size atx motherboards can achieve good latency