#define SBD_CTRLREGS(line)     A_BCM1480_DUART_CTRLREG((line), 0)
 #define SBD_INT(line)          (K_BCM1480_INT_UART_0 + (line))
 
+#define DUART_CHANREG_SPACING  BCM1480_DUART_CHANREG_SPACING
+
+#define R_DUART_IMRREG(line)   R_BCM1480_DUART_IMRREG(line)
+#define R_DUART_INCHREG(line)  R_BCM1480_DUART_INCHREG(line)
+#define R_DUART_ISRREG(line)   R_BCM1480_DUART_ISRREG(line)
+
 #elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
 #include <asm/sibyte/sb1250_regs.h>
 #include <asm/sibyte/sb1250_int.h>
 
        (A_BCM1480_DUART(chan) +                                        \
         BCM1480_DUART_CHANREG_SPACING * 3 + (reg))
 
+#define DUART_IMRISR_SPACING       0x20
+#define DUART_INCHNG_SPACING       0x10
+
 #define R_BCM1480_DUART_IMRREG(chan)                                   \
        (R_DUART_IMR_A + ((chan) & 1) * DUART_IMRISR_SPACING)
 #define R_BCM1480_DUART_ISRREG(chan)                                   \
        (R_DUART_ISR_A + ((chan) & 1) * DUART_IMRISR_SPACING)
+#define R_BCM1480_DUART_INCHREG(chan)                                  \
+       (R_DUART_IN_CHNG_A + ((chan) & 1) * DUART_INCHNG_SPACING)
 
 #define A_BCM1480_DUART_IMRREG(chan)                                   \
        (A_BCM1480_DUART_CTRLREG((chan), R_BCM1480_DUART_IMRREG(chan)))