如何将我的配置文件添加到内核源代码树（arch/arm/configs）？

Question

我有 SoM imx6ull 的 yocto 项目分发。我想从 yocto 项目源代码编译一个 linux 内核。从 yocto 出来。

$ cp -rpa build/tmp/work-shared/phyboard-segin-imx6ul-2/kernel-source ~/work/tmp
  $ cd ~/work/tmp/kernel-source
  $ make clean
  $ make mrproper
  $ make distclean
  $ cp ~/my_config ~/work/tmp/kernel-source/arch/arm/configs

  $ make ARCH=arm my_config
  HOSTCC scripts/basic/fixdep
  make[1]: *** No rule to make target 'my_config'. Stop.
  Makefile:541: recipe for target 'my_config' failed
  make: *** [my_config] Error 2

如何将我的配置文件添加到源？