How to add rt-linux patch to krikstone linux 5.15.52 in yocto for iMX6ull processor board

[AkashL_]

We are presently using the RTC PCF85263A with an iMX6ULL processor, running Linux 5.15.52 on Yocto 4.0. Additionally,

I would like to add the RT-Linux patch to the kernel, but I found that the RT patches do not match with the Linux kernel version.

Could you please suggest RT patches for inclusion in my Yocto environment?

[Harvey021]

You can refer to the Enable Linux RT_PREEMPT on i.MX8M Products - NXP Community and Linux Kernel changes in 5.x for i.MX users and dev... - NXP Community. Hope can help you.

Regards

Harvey

[AkashL_]

Hai NXP team

I have added this RT-Patch to my Linux kernel even though it is not the same version as my Linux kernel:

https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/5.15/older/patch-5.15.55-rt48.patch.gz

Additionally, I have enabled the CONFIG_PREEMPT_RT in the kernel. Before enabling this, every interface was working perfectly. However, after enabling it, I can't send or receive CAN data. Is there anything I need to change or am I missing out on something? Please let me know.

Thanks in advance.

Akash