tree:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git imx/drivers
head:   426553bb2e352332919ae762e25f9e76c1f5c851
commit: d544f9fbd28c3b5993dd193c0b4816f80788f9c3 [3/4] soc: imx8mq: Read SOC revision from TF-A
config: arm-multi_v5_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d544f9fbd28c3b5993dd193c0b4816f80788f9c3
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/soc/imx/soc-imx8.o: In function `imx8mq_soc_revision':
>> soc-imx8.c:(.init.text+0x14c): undefined reference to `__arm_smccc_smc'

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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation