diff --git a/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi b/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
index 1b46797583..af0655daaa 100644
--- a/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
+++ b/arch/arm/dts/armada-385-turris-omnia-u-boot.dtsi
@@ -41,10 +41,7 @@
 &spi0 {
 	u-boot,dm-pre-reloc;
 
-	spi-flash@0 {
-		compatible = "jedec,spi-nor";
-		reg = <0>;
-		spi-max-frequency = <40000000>;
+	spi-nor@0 {
 		u-boot,dm-pre-reloc;
 	};
 };
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c
index 0353d58a36..1d3cefe703 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -286,6 +286,7 @@ static struct mv_ddr_topology_map board_topology_map_1g = {
 	    MV_DDR_TIM_2T} },		/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 };
@@ -308,6 +309,7 @@ static struct mv_ddr_topology_map board_topology_map_2g = {
 	    MV_DDR_TIM_2T} },		/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 };
diff --git a/board/Marvell/db-88f6820-amc/db-88f6820-amc.c b/board/Marvell/db-88f6820-amc/db-88f6820-amc.c
index 163a1b3de9..122c63d11f 100644
--- a/board/Marvell/db-88f6820-amc/db-88f6820-amc.c
+++ b/board/Marvell/db-88f6820-amc/db-88f6820-amc.c
@@ -73,6 +73,7 @@ static struct mv_ddr_topology_map board_topology_map = {
 	    MV_DDR_TIM_DEFAULT} },	/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 };
diff --git a/board/Marvell/db-88f6820-gp/db-88f6820-gp.c b/board/Marvell/db-88f6820-gp/db-88f6820-gp.c
index 06307e582c..1edc1cb651 100644
--- a/board/Marvell/db-88f6820-gp/db-88f6820-gp.c
+++ b/board/Marvell/db-88f6820-gp/db-88f6820-gp.c
@@ -94,6 +94,7 @@ static struct mv_ddr_topology_map board_topology_map = {
 	    MV_DDR_TIM_DEFAULT} },	/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 };
diff --git a/board/alliedtelesis/x530/x530.c b/board/alliedtelesis/x530/x530.c
index d602092d73..7bcfa828d7 100644
--- a/board/alliedtelesis/x530/x530.c
+++ b/board/alliedtelesis/x530/x530.c
@@ -68,6 +68,7 @@ static struct mv_ddr_topology_map board_topology_map = {
 	    MV_DDR_TIM_2T} },		/* timing */
 	BUS_MASK_32BIT_ECC,		/* subphys mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0},				/* timing parameters */
 	{ {0} },			/* electrical configuration */
diff --git a/board/gdsys/a38x/controlcenterdc.c b/board/gdsys/a38x/controlcenterdc.c
index ba57a27218..4f1dc3b431 100644
--- a/board/gdsys/a38x/controlcenterdc.c
+++ b/board/gdsys/a38x/controlcenterdc.c
@@ -71,6 +71,7 @@ static struct mv_ddr_topology_map ddr_topology_map = {
 	    MV_DDR_TIM_DEFAULT} },	/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 
diff --git a/board/kobol/helios4/helios4.c b/board/kobol/helios4/helios4.c
index adb091ce4f..9c5b687b3e 100644
--- a/board/kobol/helios4/helios4.c
+++ b/board/kobol/helios4/helios4.c
@@ -71,6 +71,7 @@ static struct mv_ddr_topology_map board_topology_map = {
 	    MV_DDR_TIM_DEFAULT} },	/* timing */
 	BUS_MASK_32BIT_ECC,		/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0}				/* timing parameters */
 };
diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c
index 7b2accf01d..c920cf8d6b 100644
--- a/board/solidrun/clearfog/clearfog.c
+++ b/board/solidrun/clearfog/clearfog.c
@@ -142,6 +142,7 @@ static struct mv_ddr_topology_map board_topology_map = {
 	    MV_DDR_TIM_DEFAULT} },	/* timing */
 	BUS_MASK_32BIT,			/* Busses mask */
 	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
 	{ {0} },			/* raw spd data */
 	{0},				/* timing parameters */
 	{ {0} },			/* electrical configuration */
diff --git a/configs/turris_mox_defconfig b/configs/turris_mox_defconfig
index dde7437f24..f938fbb475 100644
--- a/configs/turris_mox_defconfig
+++ b/configs/turris_mox_defconfig
@@ -61,10 +61,10 @@ CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_GIGE=y
 CONFIG_MVNETA=y
+CONFIG_NVME=y
 CONFIG_PCI=y
 CONFIG_DM_PCI=y
 CONFIG_PCI_AARDVARK=y
-# CONFIG_PCI_PNP is not set
 CONFIG_MVEBU_COMPHY_SUPPORT=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_ARMADA_37XX=y
@@ -78,6 +78,7 @@ CONFIG_MVEBU_A3700_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_HOST_ETHER=y
 CONFIG_USB_ETHER_ASIX=y
diff --git a/drivers/ddr/marvell/a38x/ddr3_init.c b/drivers/ddr/marvell/a38x/ddr3_init.c
index a971cc155a..7488770268 100644
--- a/drivers/ddr/marvell/a38x/ddr3_init.c
+++ b/drivers/ddr/marvell/a38x/ddr3_init.c
@@ -104,6 +104,7 @@ int ddr3_init(void)
 static int mv_ddr_training_params_set(u8 dev_num)
 {
 	struct tune_train_params params;
+	struct mv_ddr_topology_map *tm = mv_ddr_topology_map_get();
 	int status;
 	u32 cs_num;
 	int ck_delay;
@@ -136,6 +137,10 @@ static int mv_ddr_training_params_set(u8 dev_num)
 	if (ck_delay > 0)
 		params.ck_delay = ck_delay;
 
+	/* Use platform specific override ODT value */
+	if (tm->odt_config)
+		params.g_odt_config = tm->odt_config;
+
 	status = ddr3_tip_tune_training_params(dev_num, &params);
 	if (MV_OK != status) {
 		printf("%s Training Sequence - FAILED\n", ddr_type);
diff --git a/drivers/ddr/marvell/a38x/ddr3_training.c b/drivers/ddr/marvell/a38x/ddr3_training.c
index 34cc170910..2b3af23202 100644
--- a/drivers/ddr/marvell/a38x/ddr3_training.c
+++ b/drivers/ddr/marvell/a38x/ddr3_training.c
@@ -143,6 +143,7 @@ static struct reg_data odpg_default_value[] = {
 	{0x15a4, 0x0, MASK_ALL_BITS},
 	{0x15a8, 0x0, MASK_ALL_BITS},
 	{0x15ac, 0x0, MASK_ALL_BITS},
+	{0x1600, 0x0, MASK_ALL_BITS},
 	{0x1604, 0x0, MASK_ALL_BITS},
 	{0x1608, 0x0, MASK_ALL_BITS},
 	{0x160c, 0x0, MASK_ALL_BITS},
@@ -218,7 +219,7 @@ static int ddr3_tip_pad_inv(void)
 						       DDR_PHY_CONTROL,
 						       PHY_CTRL_PHY_REG,
 						       data, data);
-#else /* !CONFIG_ARMADA_38X && !CONFIG_ARMADA_39X && !A70X0 && !A80X0 && !A3900 */
+#else /* !CONFIG_ARMADA_38X && !CONFIG_ARMADA_39X */
 #pragma message "unknown platform to configure ddr clock swap"
 #endif
 		}
@@ -1569,6 +1570,8 @@ int ddr3_tip_freq_set(u32 dev_num, enum hws_access_type access_type,
 		val = ((cl_mask_table[cl_value] & 0x1) << 2) |
 			((cl_mask_table[cl_value] & 0xe) << 3);
 
+		cs_mask[0] = 0xc;
+
 		CHECK_STATUS(ddr3_tip_write_mrs_cmd(dev_num, cs_mask, MR_CMD0,
 			val, (0x7 << 4) | (0x1 << 2)));
 
diff --git a/drivers/ddr/marvell/a38x/ddr3_training_db.c b/drivers/ddr/marvell/a38x/ddr3_training_db.c
index b2f11a8399..6aa7b6069e 100644
--- a/drivers/ddr/marvell/a38x/ddr3_training_db.c
+++ b/drivers/ddr/marvell/a38x/ddr3_training_db.c
@@ -833,6 +833,9 @@ u32 pattern_table_get_word(u32 dev_num, enum hws_pattern type, u8 index)
 			pattern = pattern_table_get_isi_word16(index);
 			break;
 		default:
+			if (((int)type == 29) || ((int)type == 30))
+				break;
+
 			printf("error: %s: unsupported pattern type [%d] found\n",
 			       __func__, (int)type);
 			pattern = 0;
diff --git a/drivers/ddr/marvell/a38x/ddr3_training_ip_def.h b/drivers/ddr/marvell/a38x/ddr3_training_ip_def.h
index 2a68669f36..8765df7cfb 100644
--- a/drivers/ddr/marvell/a38x/ddr3_training_ip_def.h
+++ b/drivers/ddr/marvell/a38x/ddr3_training_ip_def.h
@@ -80,6 +80,8 @@
 #define ADDR_SIZE_2GB			0x10000000
 #define ADDR_SIZE_4GB			0x20000000
 #define ADDR_SIZE_8GB			0x40000000
+#define ADDR_SIZE_16GB			0x80000000
+
 
 enum hws_edge_compare {
 	EDGE_PF,
diff --git a/drivers/ddr/marvell/a38x/ddr3_training_ip_engine.c b/drivers/ddr/marvell/a38x/ddr3_training_ip_engine.c
index 979f3530b7..5fd9a052fa 100644
--- a/drivers/ddr/marvell/a38x/ddr3_training_ip_engine.c
+++ b/drivers/ddr/marvell/a38x/ddr3_training_ip_engine.c
@@ -864,8 +864,11 @@ int ddr3_tip_load_all_pattern_to_mem(u32 dev_num)
 			      DUAL_DUNIT_CFG_REG, (1 << 3), (1 << 3)));
 	}
 
-	for (pattern = 0; pattern < PATTERN_LAST; pattern++)
+	for (pattern = 0; pattern < PATTERN_LAST; pattern++) {
+		if (pattern == PATTERN_TEST)
+			continue;
 		ddr3_tip_load_pattern_to_mem(dev_num, pattern);
+	}
 
 	return MV_OK;
 }
diff --git a/drivers/ddr/marvell/a38x/ddr_topology_def.h b/drivers/ddr/marvell/a38x/ddr_topology_def.h
index 34196b1662..7f2317edfa 100644
--- a/drivers/ddr/marvell/a38x/ddr_topology_def.h
+++ b/drivers/ddr/marvell/a38x/ddr_topology_def.h
@@ -14,6 +14,11 @@
 #define MV_DDR_MAX_BUS_NUM	9
 #define MV_DDR_MAX_IFACE_NUM	1
 
+enum mv_ddr_twin_die {
+	NOT_COMBINED,
+	COMBINED,
+};
+
 struct bus_params {
 	/* Chip Select (CS) bitmask (bits 0-CS0, bit 1- CS1 ...) */
 	u8 cs_bitmask;
@@ -113,6 +118,9 @@ struct mv_ddr_topology_map {
 	/* source of ddr configuration data */
 	enum mv_ddr_cfg_src cfg_src;
 
+	/* ddr twin-die */
+	enum mv_ddr_twin_die twin_die_combined;
+
 	/* raw spd data */
 	union mv_ddr_spd_data spd_data;
 
@@ -125,6 +133,9 @@ struct mv_ddr_topology_map {
 	/* electrical parameters */
 	unsigned int electrical_data[MV_DDR_EDATA_LAST];
 
+	/* ODT configuration */
+	u32 odt_config;
+
 	/* Clock enable mask */
 	u32 clk_enable;
 
@@ -148,7 +159,13 @@ enum mv_ddr_validation {
 	MV_DDR_VAL_DIS,
 	MV_DDR_VAL_RX,
 	MV_DDR_VAL_TX,
-	MV_DDR_VAL_RX_TX
+	MV_DDR_VAL_RX_TX,
+	MV_DDR_MEMORY_CHECK
+};
+
+enum mv_ddr_sscg {
+	SSCG_EN,
+	SSCG_DIS,
 };
 
 struct mv_ddr_iface {
@@ -179,8 +196,12 @@ struct mv_ddr_iface {
 	/* ddr interface validation mode */
 	enum mv_ddr_validation validation;
 
+	/* ddr interface validation mode */
+	enum mv_ddr_sscg sscg;
+
 	/* ddr interface topology map */
 	struct mv_ddr_topology_map tm;
+
 };
 
 struct mv_ddr_iface *mv_ddr_iface_get(void);
diff --git a/drivers/ddr/marvell/a38x/mv_ddr_build_message.c b/drivers/ddr/marvell/a38x/mv_ddr_build_message.c
index cc6234fd40..a2bb8a96a6 100644
--- a/drivers/ddr/marvell/a38x/mv_ddr_build_message.c
+++ b/drivers/ddr/marvell/a38x/mv_ddr_build_message.c
@@ -1,3 +1,3 @@
 // SPDX-License-Identifier: GPL-2.0
 const char mv_ddr_build_message[] = "";
-const char mv_ddr_version_string[] = "mv_ddr: mv_ddr-armada-18.09.2";
+const char mv_ddr_version_string[] = "mv_ddr: 14.0.0";
diff --git a/drivers/ddr/marvell/a38x/mv_ddr_plat.c b/drivers/ddr/marvell/a38x/mv_ddr_plat.c
index 72f0dfbbbb..0d1df189e8 100644
--- a/drivers/ddr/marvell/a38x/mv_ddr_plat.c
+++ b/drivers/ddr/marvell/a38x/mv_ddr_plat.c
@@ -4,6 +4,7 @@
  */
 
 #include "ddr3_init.h"
+#include "mv_ddr_common.h"
 #include "mv_ddr_training_db.h"
 #include "mv_ddr_regs.h"
 #include "mv_ddr_sys_env_lib.h"
@@ -1016,7 +1017,7 @@ int ddr3_calc_mem_cs_size(u32 cs, uint64_t *cs_size)
 		return MV_BAD_VALUE;
 	}
 
-	*cs_size = cs_mem_size << 20; /* write cs size in bytes */
+	*cs_size = cs_mem_size;
 
 	return MV_OK;
 }
@@ -1025,9 +1026,11 @@ static int ddr3_fast_path_dynamic_cs_size_config(u32 cs_ena)
 {
 	u32 reg, cs;
 	uint64_t mem_total_size = 0;
+	uint64_t cs_mem_size_mb = 0;
 	uint64_t cs_mem_size = 0;
 	uint64_t mem_total_size_c, cs_mem_size_c;
 
+
 #ifdef DEVICE_MAX_DRAM_ADDRESS_SIZE
 	u32 physical_mem_size;
 	u32 max_mem_size = DEVICE_MAX_DRAM_ADDRESS_SIZE;
@@ -1038,8 +1041,9 @@ static int ddr3_fast_path_dynamic_cs_size_config(u32 cs_ena)
 	for (cs = 0; cs < MAX_CS_NUM; cs++) {
 		if (cs_ena & (1 << cs)) {
 			/* get CS size */
-			if (ddr3_calc_mem_cs_size(cs, &cs_mem_size) != MV_OK)
+			if (ddr3_calc_mem_cs_size(cs, &cs_mem_size_mb) != MV_OK)
 				return MV_FAIL;
+			cs_mem_size = cs_mem_size_mb * _1M;
 
 #ifdef DEVICE_MAX_DRAM_ADDRESS_SIZE
 			/*
@@ -1088,6 +1092,7 @@ static int ddr3_fast_path_dynamic_cs_size_config(u32 cs_ena)
 			 */
 			mem_total_size_c = (mem_total_size >> 16) & 0xffffffffffff;
 			cs_mem_size_c = (cs_mem_size >> 16) & 0xffffffffffff;
+
 			/* if the sum less than 2 G - calculate the value */
 			if (mem_total_size_c + cs_mem_size_c < 0x10000)
 				mem_total_size += cs_mem_size;
diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.c b/drivers/ddr/marvell/a38x/mv_ddr_topology.c
index 09840b1e70..2db6283c23 100644
--- a/drivers/ddr/marvell/a38x/mv_ddr_topology.c
+++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.c
@@ -127,6 +127,11 @@ int mv_ddr_topology_map_update(void)
 		speed_bin_index = iface_params->speed_bin_index;
 		freq = iface_params->memory_freq;
 
+		if (tm->twin_die_combined == COMBINED) {
+			iface_params->bus_width = MV_DDR_DEV_WIDTH_8BIT;
+			iface_params->memory_size -= 1;
+		}
+
 		if (iface_params->cas_l == 0)
 			iface_params->cas_l = mv_ddr_cl_val_get(speed_bin_index, freq);
 
@@ -144,6 +149,9 @@ unsigned short mv_ddr_bus_bit_mask_get(void)
 	unsigned int octets_per_if_num = ddr3_tip_dev_attr_get(0, MV_ATTR_OCTET_PER_INTERFACE);
 
 	if (tm->cfg_src == MV_DDR_CFG_SPD) {
+		if (tm->bus_act_mask == MV_DDR_32BIT_ECC_PUP8_BUS_MASK)
+			tm->spd_data.byte_fields.byte_13.bit_fields.primary_bus_width = MV_DDR_PRI_BUS_WIDTH_32;
+
 		enum mv_ddr_pri_bus_width pri_bus_width = mv_ddr_spd_pri_bus_width_get(&tm->spd_data);
 		enum mv_ddr_bus_width_ext bus_width_ext = mv_ddr_spd_bus_width_ext_get(&tm->spd_data);
 
@@ -151,7 +159,7 @@ unsigned short mv_ddr_bus_bit_mask_get(void)
 		case MV_DDR_PRI_BUS_WIDTH_16:
 			pri_and_ext_bus_width = BUS_MASK_16BIT;
 			break;
-		case MV_DDR_PRI_BUS_WIDTH_32:
+		case MV_DDR_PRI_BUS_WIDTH_32: /*each bit represents byte, so 0xf-is means 4 bytes-32 bit*/
 			pri_and_ext_bus_width = BUS_MASK_32BIT;
 			break;
 		case MV_DDR_PRI_BUS_WIDTH_64:
@@ -245,7 +253,8 @@ static unsigned int mem_size[] = {
 	ADDR_SIZE_1GB,
 	ADDR_SIZE_2GB,
 	ADDR_SIZE_4GB,
-	ADDR_SIZE_8GB
+	ADDR_SIZE_8GB,
+	ADDR_SIZE_16GB
 	/* TODO: add capacity up to 256GB */
 };
 
@@ -277,7 +286,6 @@ unsigned long long mv_ddr_mem_sz_per_cs_get(void)
 	mem_sz_per_cs = (unsigned long long)mem_size[iface_params->memory_size] *
 			(unsigned long long)sphys /
 			(unsigned long long)sphys_per_dunit;
-
 	return mem_sz_per_cs;
 }
 
diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.h b/drivers/ddr/marvell/a38x/mv_ddr_topology.h
index 4fca47689f..1cb69ad085 100644
--- a/drivers/ddr/marvell/a38x/mv_ddr_topology.h
+++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.h
@@ -179,7 +179,9 @@ enum mv_ddr_dic_evalue {
 
 /* phy electrical configuration values */
 enum mv_ddr_ohm_evalue {
+	MV_DDR_OHM_20 = 20,/*relevant for Synopsys C/A Drive strength only*/
 	MV_DDR_OHM_30 = 30,
+	MV_DDR_OHM_40 = 40,/*relevant for Synopsys C/A Drive strength only*/
 	MV_DDR_OHM_48 = 48,
 	MV_DDR_OHM_60 = 60,
 	MV_DDR_OHM_80 = 80,
diff --git a/drivers/ddr/marvell/a38x/xor.c b/drivers/ddr/marvell/a38x/xor.c
index 5fb9e216d3..98fb39eaf0 100644
--- a/drivers/ddr/marvell/a38x/xor.c
+++ b/drivers/ddr/marvell/a38x/xor.c
@@ -340,7 +340,7 @@ void ddr3_new_tip_ecc_scrub(void)
 {
 	u32 cs_c, max_cs;
 	u32 cs_ena = 0;
-	uint64_t total_mem_size, cs_mem_size = 0;
+	uint64_t total_mem_size, cs_mem_size_mb = 0, cs_mem_size = 0;
 
 	printf("DDR Training Sequence - Start scrubbing\n");
 	max_cs = mv_ddr_cs_num_get();
@@ -349,9 +349,9 @@ void ddr3_new_tip_ecc_scrub(void)
 
 #if defined(CONFIG_ARMADA_38X) || defined(CONFIG_ARMADA_39X)
 	/* all chip-selects are of same size */
-	ddr3_calc_mem_cs_size(0, &cs_mem_size);
+	ddr3_calc_mem_cs_size(0, &cs_mem_size_mb);
 #endif
-
+	cs_mem_size = cs_mem_size_mb * _1M;
 	mv_sys_xor_init(max_cs, cs_ena, cs_mem_size, 0);
 	total_mem_size = max_cs * cs_mem_size;
 	mv_xor_mem_init(0, 0, total_mem_size, 0xdeadbeef, 0xdeadbeef);
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index 8713b88461..b4e1b60240 100644
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -42,6 +42,10 @@
 #define PCIE_CORE_DEV_CTRL_STATS_REG				0xc8
 #define     PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE	(0 << 4)
 #define     PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE		(0 << 11)
+#define     PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE		0x2
+#define     PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE_SHIFT	5
+#define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE		0x2
+#define     PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT	12
 #define PCIE_CORE_LINK_CTRL_STAT_REG				0xd0
 #define     PCIE_CORE_LINK_TRAINING				BIT(5)
 #define PCIE_CORE_ERR_CAPCTL_REG				0x118
@@ -534,6 +538,10 @@ static int pcie_advk_setup_hw(struct pcie_advk *pcie)
 
 	/* Set PCIe Device Control and Status 1 PF0 register */
 	reg = PCIE_CORE_DEV_CTRL_STATS_RELAX_ORDER_DISABLE |
+		(PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE <<
+		 PCIE_CORE_DEV_CTRL_STATS_MAX_PAYLOAD_SIZE_SHIFT) |
+		(PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE <<
+		 PCIE_CORE_DEV_CTRL_STATS_MAX_RD_REQ_SIZE_SHIFT) |
 		PCIE_CORE_DEV_CTRL_STATS_SNOOP_DISABLE;
 	advk_writel(pcie, reg, PCIE_CORE_DEV_CTRL_STATS_REG);
 
diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c
index 235d9bb90c..0c1d7cd770 100644
--- a/drivers/pci/pci_mvebu.c
+++ b/drivers/pci/pci_mvebu.c
@@ -79,7 +79,8 @@ struct mvebu_pcie {
 	u32 lane;
 	int devfn;
 	u32 lane_mask;
-	pci_dev_t dev;
+	int first_busno;
+	int local_dev;
 	char name[16];
 	unsigned int mem_target;
 	unsigned int mem_attr;
@@ -144,38 +145,47 @@ static inline struct mvebu_pcie *hose_to_pcie(struct pci_controller *hose)
 	return container_of(hose, struct mvebu_pcie, hose);
 }
 
+static int mvebu_pcie_valid_addr(struct mvebu_pcie *pcie, pci_dev_t bdf)
+{
+	/*
+	 * There are two devices visible on local bus:
+	 *   * on slot configured by function mvebu_pcie_set_local_dev_nr()
+	 *     (by default this register is set to 0) there is a
+	 *     "Marvell Memory controller", which isn't useful in root complex
+	 *     mode,
+	 *   * on all other slots the real PCIe card connected to the PCIe slot.
+	 *
+	 * We therefore allow access only to the real PCIe card.
+	 */
+	if (PCI_BUS(bdf) == pcie->first_busno &&
+	    PCI_DEV(bdf) != !pcie->local_dev)
+		return 0;
+
+	return 1;
+}
+
 static int mvebu_pcie_read_config(const struct udevice *bus, pci_dev_t bdf,
 				  uint offset, ulong *valuep,
 				  enum pci_size_t size)
 {
 	struct mvebu_pcie *pcie = dev_get_plat(bus);
-	int local_bus = PCI_BUS(pcie->dev);
-	int local_dev = PCI_DEV(pcie->dev);
-	u32 reg;
 	u32 data;
 
-	debug("PCIE CFG read:  loc_bus=%d loc_dev=%d (b,d,f)=(%2d,%2d,%2d) ",
-	      local_bus, local_dev, PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
+	debug("PCIE CFG read: (b,d,f)=(%2d,%2d,%2d) ",
+	      PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
 
-	/* Don't access the local host controller via this API */
-	if (PCI_BUS(bdf) == local_bus && PCI_DEV(bdf) == local_dev) {
-		debug("- skipping host controller\n");
-		*valuep = pci_get_ff(size);
-		return 0;
-	}
-
-	/* If local dev is 0, the first other dev can only be 1 */
-	if (PCI_BUS(bdf) == local_bus && local_dev == 0 && PCI_DEV(bdf) != 1) {
+	if (!mvebu_pcie_valid_addr(pcie, bdf)) {
 		debug("- out of range\n");
 		*valuep = pci_get_ff(size);
 		return 0;
 	}
 
 	/* write address */
-	reg = PCIE_CONF_ADDR(bdf, offset);
-	writel(reg, pcie->base + PCIE_CONF_ADDR_OFF);
+	writel(PCIE_CONF_ADDR(bdf, offset), pcie->base + PCIE_CONF_ADDR_OFF);
+
+	/* read data */
 	data = readl(pcie->base + PCIE_CONF_DATA_OFF);
-	debug("(addr,val)=(0x%04x, 0x%08x)\n", offset, data);
+	debug("(addr,size,val)=(0x%04x, %d, 0x%08x)\n", offset, size, data);
 	*valuep = pci_conv_32_to_size(data, offset, size);
 
 	return 0;
@@ -186,27 +196,21 @@ static int mvebu_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
 				   enum pci_size_t size)
 {
 	struct mvebu_pcie *pcie = dev_get_plat(bus);
-	int local_bus = PCI_BUS(pcie->dev);
-	int local_dev = PCI_DEV(pcie->dev);
 	u32 data;
 
-	debug("PCIE CFG write: loc_bus=%d loc_dev=%d (b,d,f)=(%2d,%2d,%2d) ",
-	      local_bus, local_dev, PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
-	debug("(addr,val)=(0x%04x, 0x%08lx)\n", offset, value);
+	debug("PCIE CFG write: (b,d,f)=(%2d,%2d,%2d) ",
+	      PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
+	debug("(addr,size,val)=(0x%04x, %d, 0x%08lx)\n", offset, size, value);
 
-	/* Don't access the local host controller via this API */
-	if (PCI_BUS(bdf) == local_bus && PCI_DEV(bdf) == local_dev) {
-		debug("- skipping host controller\n");
-		return 0;
-	}
-
-	/* If local dev is 0, the first other dev can only be 1 */
-	if (PCI_BUS(bdf) == local_bus && local_dev == 0 && PCI_DEV(bdf) != 1) {
+	if (!mvebu_pcie_valid_addr(pcie, bdf)) {
 		debug("- out of range\n");
 		return 0;
 	}
 
+	/* write address */
 	writel(PCIE_CONF_ADDR(bdf, offset), pcie->base + PCIE_CONF_ADDR_OFF);
+
+	/* write data */
 	data = pci_conv_size_to_32(0, value, offset, size);
 	writel(data, pcie->base + PCIE_CONF_DATA_OFF);
 
@@ -273,7 +277,7 @@ static int mvebu_pcie_probe(struct udevice *dev)
 	struct mvebu_pcie *pcie = dev_get_plat(dev);
 	struct udevice *ctlr = pci_get_controller(dev);
 	struct pci_controller *hose = dev_get_uclass_priv(ctlr);
-	static int bus;
+	int bus = dev_seq(dev);
 	u32 reg;
 
 	debug("%s: PCIe %d.%d - up, base %08x\n", __func__,
@@ -284,9 +288,11 @@ static int mvebu_pcie_probe(struct udevice *dev)
 	      readl(pcie->base), mvebu_pcie_get_local_bus_nr(pcie),
 	      mvebu_pcie_get_local_dev_nr(pcie));
 
+	pcie->first_busno = bus;
+	pcie->local_dev = 1;
+
 	mvebu_pcie_set_local_bus_nr(pcie, bus);
-	mvebu_pcie_set_local_dev_nr(pcie, 0);
-	pcie->dev = PCI_BDF(bus, 0, 0);
+	mvebu_pcie_set_local_dev_nr(pcie, pcie->local_dev);
 
 	pcie->mem.start = (u32)mvebu_pcie_membase;
 	pcie->mem.end = pcie->mem.start + PCIE_MEM_SIZE - 1;
@@ -336,8 +342,6 @@ static int mvebu_pcie_probe(struct udevice *dev)
 	writel(SOC_REGS_PHY_BASE, pcie->base + PCIE_BAR_LO_OFF(0));
 	writel(0, pcie->base + PCIE_BAR_HI_OFF(0));
 
-	bus++;
-
 	return 0;
 }