no real need for an actual recipe.
fill your pie pan with the frozen peaches and berries to determine how much to use. ratio is up to you. place in a mixing bowl. in a small bowl, mix 1 handful of quick tapioca or flour, 1 or 2 handfuls of sugar(white, brown, or mixed), a good pinch of salt, and maybe some cinnamon. add this mixture to the fruit and toss to mix. a little vanilla or liqeuer might also be good at this point.
line your pie pan with the bottom crust, fill, and cover with the top crust. gild if you like, and bake at 350 f for about 40 - 45 min.