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.c b/board/freescale/t104xrdb/ddr.c
index e1148e5..cf79d2d 100644
--- a/board/freescale/t104xrdb/ddr.c
+++ b/board/freescale/t104xrdb/ddr.c
@@ -75,7 +75,11 @@
* Factors to consider for half-strength driver enable:
* - number of DIMMs installed
*/
+#ifdef CONFIG_SYS_FSL_DDR4
+ popts->half_strength_driver_enable = 1;
+#else
popts->half_strength_driver_enable = 0;
+#endif
/*
* Write leveling override
*/
@@ -91,8 +95,14 @@
popts->zq_en = 1;
/* DHC_EN =1, ODT = 75 Ohm */
+#ifdef CONFIG_SYS_FSL_DDR4
+ popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_120OHM);
+ popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_120OHM) |
+ DDR_CDR2_VREF_OVRD(70); /* Vref = 70% */
+#else
popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+#endif
}
#if defined(CONFIG_DEEP_SLEEP)