Hi Yixun,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on v4.15-rc4 next-20171215]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Yixun-Lan/arm64-dts-meson-axg-switch-uart_ao-clock-to-CLK81/20171218-100949
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   In file included from arch/arm64/boot/dts/amlogic/meson-axg-s400.dts:9:0:

quoted

arch/arm64/boot/dts/amlogic/meson-axg.dtsi:10:10: fatal error: dt-bindings/clock/axg-clkc.h: No such file or directory

    #include <dt-bindings/clock/axg-clkc.h>
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   compilation terminated.

vim +10 arch/arm64/boot/dts/amlogic/meson-axg.dtsi

  > 10	#include <dt-bindings/clock/axg-clkc.h>
    11	

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