powerpc/T104xD4RDB: Add T104xD4RDB boards support

T1040D4RDB is a Freescale reference board that hosts the T1040 SoC.
    T1040D4RDB is re-designed T1040RDB board with following changes :
    - Support of DDR4 memory
    - Support of 0x66 serdes protocol which can support following interfaces
        - 2 RGMII's on DTSEC4, DTSEC5
        - 1 SGMII on DTSEC3
    - Support of QE-TDM

    Similarily T1042D4RDB is a Freescale reference board that hosts the T1040
    SoC. T1042D4RDB is re-designed T1042RDB board with following changes :
    - Support of DDR4 memory
    - Support for 0x86 serdes protocol which can support following interfaces
        - 2 RGMII's on DTSEC4, DTSEC5
        - 3 SGMII on DTSEC1, DTSEC2 & DTSEC3
    - Support of DIU

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/t104xrdb/ddr.h b/board/freescale/t104xrdb/ddr.h
index ab1c32d..b9c02f7 100644
--- a/board/freescale/t104xrdb/ddr.h
+++ b/board/freescale/t104xrdb/ddr.h
@@ -28,6 +28,9 @@
 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl
 	 * ranks| mhz| GB  |adjst| start |   ctl2
 	 */
+#ifdef CONFIG_SYS_FSL_DDR4
+	{2,  1600, 4, 4,     6, 0x07090A0c, 0x0e0f100a},
+#elif defined(CONFIG_SYS_FSL_DDR3)
 	{2,  833,  4, 4,     6, 0x06060607, 0x08080807},
 	{2,  833,  0, 4,     6, 0x06060607, 0x08080807},
 	{2,  1350, 4, 4,     7, 0x0708080A, 0x0A0B0C09},
@@ -40,10 +43,14 @@
 	{1,  1350, 0, 4,     7, 0x0708080A, 0x0A0B0C09},
 	{1,  1666, 4, 4,     7, 0x0808090B, 0x0C0D0E0A},
 	{1,  1666, 0, 4,     7, 0x0808090B, 0x0C0D0E0A},
+#else
+#error DDR type not defined
+#endif
 	{}
 };
 
+#endif
+
 static const struct board_specific_parameters *udimms[] = {
 	udimm0,
 };
-#endif