Hi Andrew,

I love your patch! Yet something to improve:

[auto build test ERROR on joel-aspeed/for-next]
[also build test ERROR on linus/master v5.10-rc7 next-20201207]
[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/Andrew-Jeffery/mmc-sdhci-of-aspeed-Expose-phase-delay-tuning/20201207-223013
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git for-next
config: i386-randconfig-c001-20201207 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/32790700ff748c3f5b3bb32c29d7ed4478c2d6ac
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Andrew-Jeffery/mmc-sdhci-of-aspeed-Expose-phase-delay-tuning/20201207-223013
        git checkout 32790700ff748c3f5b3bb32c29d7ed4478c2d6ac
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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: "mmc_of_parse_clk_phase" [drivers/mmc/host/sdhci-of-aspeed.ko] undefined!

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