Hi Sean,

I love your patch! Yet something to improve:

[auto build test ERROR on tip/timers/core]
[also build test ERROR on pwm/for-next linus/master v5.14-rc2 next-20210720]
[cannot apply to xlnx/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Sean-Anderson/dt-bindings-pwm-Add-Xilinx-AXI-Timer/20210720-144903
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 2d0a9eb23ccfdf11308bec6db0bc007585d919d2
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/338d061c42411ef012c4dce517355fd1d61c1cab
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sean-Anderson/dt-bindings-pwm-Add-Xilinx-AXI-Timer/20210720-144903
        git checkout 338d061c42411ef012c4dce517355fd1d61c1cab
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=m68k 

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "xilinx_timer_tlr_cycles" [drivers/pwm/pwm-xilinx.ko] undefined!
>> ERROR: modpost: "xilinx_timer_common_init" [drivers/pwm/pwm-xilinx.ko] undefined!
>> ERROR: modpost: "xilinx_timer_get_period" [drivers/pwm/pwm-xilinx.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org