Separate mobile version and duplicate content

I have a desktop version "http://mydomian, com" and a mobile version "http://m.mydomain, com". My blog posts are at "http://mydomain, com/posts" and I would like them to appear on my mobile version as well. How would I go about doing this without creating "duplicate content" and running into problems with the Google bot? As always, thanks in advance for your help! :)