R_DUART_IMR_A     221 arch/mips/include/asm/sibyte/bcm1480_regs.h 	(R_DUART_IMR_A + ((chan) & 1) * DUART_IMRISR_SPACING)
R_DUART_IMR_A     301 arch/mips/include/asm/sibyte/sb1250_regs.h 	(R_DUART_IMR_A + (chan) * DUART_IMRISR_SPACING)