diff --git a/board/freescale/b4860qds/ddr.c b/board/freescale/b4860qds/ddr.c
index 31b186e..3885acc 100644
--- a/board/freescale/b4860qds/ddr.c
+++ b/board/freescale/b4860qds/ddr.c
@@ -171,6 +171,9 @@
 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x3e;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/ls1043aqds/ddr.c b/board/freescale/ls1043aqds/ddr.c
index d4540d0..7882a9a 100644
--- a/board/freescale/ls1043aqds/ddr.c
+++ b/board/freescale/ls1043aqds/ddr.c
@@ -96,6 +96,9 @@
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
 			  DDR_CDR2_VREF_OVRD(70);	/* Vref = 70% */
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x59;
 #else
 	popts->cswl_override = DDR_CSWL_CS0;
 
diff --git a/board/freescale/ls1043ardb/ddr.c b/board/freescale/ls1043ardb/ddr.c
index 61b1cc4..849f1d1 100644
--- a/board/freescale/ls1043ardb/ddr.c
+++ b/board/freescale/ls1043ardb/ddr.c
@@ -91,6 +91,9 @@
 	/* Enable ZQ calibration */
 	popts->zq_en = 1;
 
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x46;
+
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
 			  DDR_CDR2_VREF_OVRD(70);	/* Vref = 70% */
diff --git a/board/freescale/ls1046aqds/ddr.c b/board/freescale/ls1046aqds/ddr.c
index d813965..4ea8b23 100644
--- a/board/freescale/ls1046aqds/ddr.c
+++ b/board/freescale/ls1046aqds/ddr.c
@@ -87,6 +87,9 @@
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
 			  DDR_CDR2_VREF_TRAIN_EN | DDR_CDR2_VREF_RANGE_2;
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x70;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/ls1046ardb/ddr.c b/board/freescale/ls1046ardb/ddr.c
index a9b7dbd..dd3b5d0 100644
--- a/board/freescale/ls1046ardb/ddr.c
+++ b/board/freescale/ls1046ardb/ddr.c
@@ -91,6 +91,9 @@
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
 			  DDR_CDR2_VREF_TRAIN_EN | DDR_CDR2_VREF_RANGE_2;
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x70;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/ls2080ardb/ddr.c b/board/freescale/ls2080ardb/ddr.c
index ecd1e71..959dfeb 100644
--- a/board/freescale/ls2080ardb/ddr.c
+++ b/board/freescale/ls2080ardb/ddr.c
@@ -134,6 +134,9 @@
 	/* Enable ZQ calibration */
 	popts->zq_en = 1;
 
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x6e;
+
 	if (ddr_freq < 2350) {
 		if (pdimm[0].n_ranks == 2 && pdimm[1].n_ranks == 2) {
 			/* four chip-selects */
diff --git a/board/freescale/t102xqds/ddr.c b/board/freescale/t102xqds/ddr.c
index c26f350..b6b1191 100644
--- a/board/freescale/t102xqds/ddr.c
+++ b/board/freescale/t102xqds/ddr.c
@@ -139,6 +139,9 @@
 #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);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x5f;
 #endif
 
 	/* T1023 supports max DDR bus 32bit width, T1024 supports DDR 64bit,
diff --git a/board/freescale/t102xrdb/ddr.c b/board/freescale/t102xrdb/ddr.c
index edfbdbf..9e1b16b 100644
--- a/board/freescale/t102xrdb/ddr.c
+++ b/board/freescale/t102xrdb/ddr.c
@@ -139,6 +139,10 @@
 #ifdef CONFIG_T1023RDB
 	popts->wrlvl_ctl_2 = 0x07070606;
 	popts->half_strength_driver_enable = 1;
+	popts->cpo_sample = 0x43;
+#elif defined(CONFIG_T1024RDB)
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x52;
 #endif
 }
 
diff --git a/board/freescale/t1040qds/ddr.c b/board/freescale/t1040qds/ddr.c
index 8240240..cb58d1e 100644
--- a/board/freescale/t1040qds/ddr.c
+++ b/board/freescale/t1040qds/ddr.c
@@ -95,6 +95,9 @@
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
 			  DDR_CDR2_VREF_OVRD(70);	/* Vref = 70% */
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x69;
 #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);
diff --git a/board/freescale/t104xrdb/ddr.c b/board/freescale/t104xrdb/ddr.c
index 22d6a5f..302f19b 100644
--- a/board/freescale/t104xrdb/ddr.c
+++ b/board/freescale/t104xrdb/ddr.c
@@ -77,6 +77,8 @@
 	 */
 #ifdef CONFIG_SYS_FSL_DDR4
 	popts->half_strength_driver_enable = 1;
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x59;
 #else
 	popts->half_strength_driver_enable = 0;
 #endif
diff --git a/board/freescale/t208xqds/ddr.c b/board/freescale/t208xqds/ddr.c
index f96470f..d6e4554 100644
--- a/board/freescale/t208xqds/ddr.c
+++ b/board/freescale/t208xqds/ddr.c
@@ -99,6 +99,9 @@
 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x64;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/t208xrdb/ddr.c b/board/freescale/t208xrdb/ddr.c
index f6c8ca3..3487261 100644
--- a/board/freescale/t208xrdb/ddr.c
+++ b/board/freescale/t208xrdb/ddr.c
@@ -92,6 +92,9 @@
 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x54;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/t4qds/ddr.c b/board/freescale/t4qds/ddr.c
index d533924..842073b 100644
--- a/board/freescale/t4qds/ddr.c
+++ b/board/freescale/t4qds/ddr.c
@@ -107,6 +107,9 @@
 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x63;
 }
 
 phys_size_t initdram(int board_type)
diff --git a/board/freescale/t4rdb/ddr.c b/board/freescale/t4rdb/ddr.c
index 230f031..7b05821 100644
--- a/board/freescale/t4rdb/ddr.c
+++ b/board/freescale/t4rdb/ddr.c
@@ -100,6 +100,9 @@
 	/* DHC_EN =1, ODT = 75 Ohm */
 	popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
 	popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
+
+	/* optimize cpo for erratum A-009942 */
+	popts->cpo_sample = 0x64;
 }
 
 phys_size_t initdram(int board_type)