[Reference manual](http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0489c/Chdefdgf.html) for Cortex-M7 says that FPv5 is used, but your configuration uses FPv4.
Reference manual for Cortex-M7 says that FPv5 is used, but your configuration uses FPv4.