Tilt Cylinder on An Inclined Plane

A cylinder of radius R and mass M is on a rough inclined plane with inclined angle θ from horizontal. Let μ be the coefficient of friction between the inclined plane and the cylinder. The cylinder makes an angle φ with the generatrix (i.e. the line of intersection of the plane and the horizontal surface). Gravity acceleration is g.
Determine minimum value of μ in order to prevent the cylinder from slipping!