1nvkm-y += nvkm/subdev/volt/base.o
2nvkm-y += nvkm/subdev/volt/gpio.o
3nvkm-y += nvkm/subdev/volt/nv40.o
4nvkm-y += nvkm/subdev/volt/gk104.o
5nvkm-y += nvkm/subdev/volt/gk20a.o
6