Hi Jernej,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm/drm-next]
[also build test ERROR on v4.17 next-20180612]
[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/Jernej-Skrabec/clk-sunxi-ng-r40-Add-minimal-rate-for-video-PLLs/20180613-041046
base:   git://people.freedesktop.org/~airlied/linux.git drm-next
config: arm-multi_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-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
        GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/sun4i/sun8i_tcon_top.o: In function `init_module':
>> sun8i_tcon_top.c:(.init.text+0x0): multiple definition of `init_module'
   drivers/gpu/drm/sun4i/sun8i_mixer.o:sun8i_mixer.c:(.init.text+0x0): first defined here
   drivers/gpu/drm/sun4i/sun8i_tcon_top.o: In function `cleanup_module':
>> sun8i_tcon_top.c:(.exit.text+0x0): multiple definition of `cleanup_module'
   drivers/gpu/drm/sun4i/sun8i_mixer.o:sun8i_mixer.c:(.exit.text+0x0): first defined here

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