What origins does my surname have??

Okay so, 2 days ago i ordered a ancestrydna test so theres no need for trying to research most things anymore, BUT there's one thing i'd really like to know because i don't know myself, and i also don't know if my AncestryDNA test can tell me from what Tribe my family descended, but yeah. My surname is " Coffie " and i read on every single website it has either Irish, or Ghanaian-Hausa origins. Since my family is almost entirely black (except for my great grandfather who was a white surinamer, a dutchman.) i know it is more african in origin than anything else, but just because it says my surname is of Hausa origin, does it mean my family could have descended from the Hausa tribe? Or am i just being plain stupid? I would appreciate it if you guys could help me on this matter hahaha thanks for your time