Hi Damien,

I love your patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on spi/for-next pza/reset/next v5.10-rc3]
[cannot apply to linus/master next-20201113]
[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/Damien-Le-Moal/RISC-V-Kendryte-K210-support-improvments/20201109-095540
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: riscv-randconfig-p001-20201109 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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/ec1240e1739d5d0703571eaf23e82ec9932e3d42
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Damien-Le-Moal/RISC-V-Kendryte-K210-support-improvments/20201109-095540
        git checkout ec1240e1739d5d0703571eaf23e82ec9932e3d42
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

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 >>):

>> make[3]: *** No rule to make target 'arch/riscv/boot/dts/kendryte/.dtb', needed by '__build'.
   make[3]: Target '__build' not remade because of errors.

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