+/* DRP register defines */
+#define DRP_RKEN0 (1 << 0)
+#define DRP_RKEN1 (1 << 1)
+#define DRP_PRI64BSPLITEN (1 << 13)
+#define DRP_ADDRMAP_MAP0 (1 << 14)
+#define DRP_ADDRMAP_MAP1 (1 << 15)
+#define DRP_ADDRMAP_MASK 0x0000c000
+
+/* DTR0 register defines */
+#define DTR0_DFREQ_MASK 0x00000003
+#define DTR0_TRP_MASK 0x000000f0
+#define DTR0_TRCD_MASK 0x00000f00
+#define DTR0_TCL_MASK 0x00007000
+
+/* DTR1 register defines */
+#define DTR1_TWCL_MASK 0x00000007
+#define DTR1_TCMD_MASK 0x00000030
+#define DTR1_TWTP_MASK 0x00000f00
+#define DTR1_TCCD_12CLK (1 << 12)
+#define DTR1_TCCD_18CLK (1 << 13)
+#define DTR1_TCCD_MASK 0x00003000
+#define DTR1_TFAW_MASK 0x000f0000
+#define DTR1_TRAS_MASK 0x00f00000
+#define DTR1_TRRD_MASK 0x03000000
+#define DTR1_TRTP_MASK 0x70000000
+
+/* DTR2 register defines */
+#define DTR2_TRRDR_MASK 0x00000007
+#define DTR2_TWWDR_MASK 0x00000700
+#define DTR2_TRWDR_MASK 0x000f0000
+
+/* DTR3 register defines */
+#define DTR3_TWRDR_MASK 0x00000007
+#define DTR3_TXXXX_MASK 0x00000070
+#define DTR3_TRWSR_MASK 0x00000f00
+#define DTR3_TWRSR_MASK 0x0001e000
+#define DTR3_TXP_MASK 0x00c00000
+
+/* DTR4 register defines */
+#define DTR4_WRODTSTRT_MASK 0x00000003
+#define DTR4_WRODTSTOP_MASK 0x00000070
+#define DTR4_XXXX1_MASK 0x00000700
+#define DTR4_XXXX2_MASK 0x00007000
+#define DTR4_ODTDIS (1 << 15)
+#define DTR4_TRGSTRDIS (1 << 16)
+
+/* DPMC0 register defines */
+#define DPMC0_PCLSTO_MASK 0x00070000
+#define DPMC0_PREAPWDEN (1 << 21)
+#define DPMC0_DYNSREN (1 << 23)
+#define DPMC0_CLKGTDIS (1 << 24)
+#define DPMC0_DISPWRDN (1 << 25)
+#define DPMC0_ENPHYCLKGATE (1 << 29)
+
+/* DRFC register defines */
+#define DRFC_TREFI_MASK 0x00007000
+#define DRFC_REFDBTCLR (1 << 21)
+
+/* DSCH register defines */
+#define DSCH_OOODIS (1 << 8)
+#define DSCH_OOOST3DIS (1 << 9)
+#define DSCH_NEWBYPDIS (1 << 12)
+
+/* DCAL register defines */
+#define DCAL_ZQCINT_MASK 0x00000700
+#define DCAL_SRXZQCL_MASK 0x00003000
+
+/* DRMC register defines */
+#define DRMC_CKEMODE (1 << 4)
+#define DRMC_ODTMODE (1 << 12)
+#define DRMC_COLDWAKE (1 << 16)
+
+/* PMSTS register defines */
+#define PMSTS_DISR (1 << 0)
+
+/* DCO register defines */
+#define DCO_DRPLOCK (1 << 0)
+#define DCO_CPGCLOCK (1 << 8)
+#define DCO_PMICTL (1 << 28)
+#define DCO_PMIDIS (1 << 29)
+#define DCO_IC (1 << 31)
+
+/* DECCCTRL register defines */
+#define DECCCTRL_SBEEN (1 << 0)
+#define DECCCTRL_DBEEN (1 << 1)
+#define DECCCTRL_ENCBGEN (1 << 17)
+