What does buddhism say about mind and heart? Some gurus like osho says that the heart should dominate mind but reverse is happening in real world.
Some like sadhguru from isha foundation says that heart is just a pumping device. It is driven by our mind.

What point of view does buddhism have on heart and mind. I mean in terms of differences, dominance, reality, etc.
In spiritual traditions, the heart is not the physical heart, but the intuition, the non-discursive or non-conceptual mind.

The conceptual mind gradually auto-emerges thanks to the mechanism known as Dependent Origination. As conceptual mind develops, it constructs an experience of a world, Samsara. Or we could say, the conceptual mind and Samsara are one and the same. All our griefs and worries exist inside the framework of conceptual mind. For example the concept of Death is like that, it's an abstract concept, in reality there is no death but endless transformation.

The non-conceptual mind aka heart does not operate in such terms, so it does not have the same issues. The Buddhism I was taught is pretty much in favor of re-discovering and utilizing one's "heart". In Early Buddhist texts the process of letting go of the concepts until only the non-conceptual remains is described as "animitta" or The Signless. 

You can read more about it in this nice article:  http://www.ahandfulofleaves.org/documents/Articles/Signless%20Meditations%20in%20Pali%20Buddhism_JIABS_Harvey_1986.pdf