XCHAL_EXTINT4_NUM   19 arch/xtensa/platforms/xt2000/include/platform/serial.h #define DUART16552_1_INTNUM	XCHAL_EXTINT4_NUM
XCHAL_EXTINT4_NUM   24 arch/xtensa/platforms/xtfpga/include/platform/hardware.h #define OETH_IRQ		XCHAL_EXTINT4_NUM