Require kernel 5.15.89-inmusic-2023-01-18-rt56

to build kernel tree:

Required package : 


-linux-5.15.tar.xz
-patch-5.15.86
-patch-5.15.86-87
-patch-5.15.87-88
-patch-5.15.88-89
-patches-5.15.86-rt56.tar.gz

-dos2unix 

extracted config from current kernel on force ( /proc/config.gz) 


1)  extract linux-5.15.tar.xz
2)  go to source folder
3)  patch -p1 < ../patch-5.15.86 , allow to go to 5.15.86
4)  dos2unix -k patch-5.15.86-87
5)  dos2unix -k patch-5.15.87-88
6)  dos2unix -k patch-5.15.88-89
7)  patch -p1 < ../patch-5.15.86-87
8)  patch -p1 < ../patch-5.15.87-88 
9)  patch -p1 < ../patch-5.15.88-89
10) gzip -cd ../patches-5.15.86-rt56.tar.gz |patch -p1


go to source folder :

replace .config with the one in config.gz 
make menuconfig
configure modules you want
make module_prepare
change file localversion-rt with : -inmusic-2023-01-18-rt56

go to module folder location 
make -C /home/linux/src/build1/linux-5.15/ M=$PWD

then copy on force in same folder as in source tree & do depmod & modprobe. 
/usr/lib/modules/5.15.89-inmusic-2023-01-18-rt56/kernel/...

eg for usblcd.ko 
/lib/modules/5.15.89-inmusic-2023-01-18-rt56/kernel/drivers/usb/misc

modules loads fine, and give no error in dmesg

snd-aloop : alsa module for loopback device
snd-dummy : alsa module for dummy sound card
goodix : input touchscreen module for goodix (gt911) no tested
usblcd : usb support for lcd via usb ( not tested )
g_audio / g_midi : gadget usb module