DUART_INCHNG_SPACING  225 arch/mips/include/asm/sibyte/bcm1480_regs.h 	(R_DUART_IN_CHNG_A + ((chan) & 1) * DUART_INCHNG_SPACING)
DUART_INCHNG_SPACING  305 arch/mips/include/asm/sibyte/sb1250_regs.h 	(R_DUART_IN_CHNG_A + (chan) * DUART_INCHNG_SPACING)