Linux header arch folder "aarch64" or "arm64"?

[Pablo J. Cabrera Muñoz]

So I was trying to compile a wifi driver for a somewhat new usb wifi device and it breaks during compilation because it expects a directory named

/usr/src/<linux-headers>/arch/aarch64

but on NanoPi NEO3 the directory is named (on NanoPI R4S is the same case btw)

/usr/src/<linux-headers>/arch/arm64

 

In order to make it work, I created a symlink under the "arch" directory called "aarch64" pointing to "arm64" and I was able to compile it. 

 

Here is what happens when I try to compile it without the symlink:

pablo@callampa:~/repos/github.com/morrownr/rtl8852cu-20240510$ make clean
cd phl ; rm -fr */*/*/*/*.mod.c */*/*/*/*.mod */*/*/*/*.o */*/*/*/.*.cmd */*/*/*/*.ko
cd phl ; rm -fr */*/*/*.mod.c */*/*/*.mod */*/*/*.o */*/*/.*.cmd */*/*/*.ko
cd phl ; rm -fr */*/*.mod.c */*/*.mod */*/*.o */*/.*.cmd */*/*.ko
cd phl ; rm -fr */*.mod.c */*.mod */*.o */.*.cmd */*.ko
cd phl ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko
cd core ; rm -fr */*.mod.c */*.mod */*.o */.*.cmd */*.ko
cd core ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko
cd os_dep/linux ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko
cd os_dep ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko
cd platform ; rm -fr *.mod.c *.mod *.o .*.cmd *.ko
rm -fr Module.symvers ; rm -fr Module.markers ; rm -fr modules.order
rm -fr *.mod.c *.mod *.o .*.cmd *.ko *~
rm -fr .tmp_versions
rm -fr MOK.der MOK.priv
pablo@callampa:~/repos/github.com/morrownr/rtl8852cu-20240510$ make
#rm -f .symvers.8852cu
make ARCH=aarch64 CROSS_COMPILE= -C /lib/modules/6.6.58-current-rockchip64/build M=/home/pablo/repos/github.com/morrownr/rtl8852cu-20240510  modules
make[1]: Entering directory '/usr/src/linux-headers-6.6.58-current-rockchip64'
/usr/src/linux-headers-6.6.58-current-rockchip64/Makefile:768: arch/aarch64/Makefile: No such file or directory
make[2]: *** No rule to make target 'arch/aarch64/Makefile'.  Stop.
make[1]: *** [Makefile:234: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.6.58-current-rockchip64'
make: *** [Makefile:723: modules] Error 2
pablo@callampa:~/repos/github.com/morrownr/rtl8852cu-20240510$ 

 

My question would be, is it correct? Shouldn't it be named "aarch64" in the first place?