diff --git a/drivers/st/ddr/stm32mp1_ddr.c b/drivers/st/ddr/stm32mp1_ddr.c
index 3db47c4fd..4719e1e68 100644
--- a/drivers/st/ddr/stm32mp1_ddr.c
+++ b/drivers/st/ddr/stm32mp1_ddr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
  */
@@ -7,47 +7,58 @@
 #include <errno.h>
 #include <stddef.h>
 
-#include <platform_def.h>
-
 #include <arch.h>
 #include <arch_helpers.h>
 #include <common/debug.h>
 #include <drivers/clk.h>
 #include <drivers/delay_timer.h>
-#include <drivers/st/stm32mp_pmic.h>
 #include <drivers/st/stm32mp1_ddr.h>
 #include <drivers/st/stm32mp1_ddr_regs.h>
 #include <drivers/st/stm32mp1_pwr.h>
 #include <drivers/st/stm32mp1_ram.h>
+#include <drivers/st/stm32mp_ddr.h>
 #include <lib/mmio.h>
 #include <plat/common/platform.h>
 
-struct reg_desc {
-	const char *name;
-	uint16_t offset;	/* Offset for base address */
-	uint8_t par_offset;	/* Offset for parameter array */
-};
-
-#define INVALID_OFFSET	0xFFU
-
-#define TIMEOUT_US_1S	1000000U
+#include <platform_def.h>
 
 #define DDRCTL_REG(x, y)					\
 	{							\
 		.name = #x,					\
-		.offset = offsetof(struct stm32mp1_ddrctl, x),	\
+		.offset = offsetof(struct stm32mp_ddrctl, x),	\
 		.par_offset = offsetof(struct y, x)		\
 	}
 
 #define DDRPHY_REG(x, y)					\
 	{							\
 		.name = #x,					\
-		.offset = offsetof(struct stm32mp1_ddrphy, x),	\
+		.offset = offsetof(struct stm32mp_ddrphy, x),	\
 		.par_offset = offsetof(struct y, x)		\
 	}
 
+/*
+ * PARAMETERS: value get from device tree :
+ *             size / order need to be aligned with binding
+ *             modification NOT ALLOWED !!!
+ */
+#define DDRCTL_REG_REG_SIZE	25	/* st,ctl-reg */
+#define DDRCTL_REG_TIMING_SIZE	12	/* st,ctl-timing */
+#define DDRCTL_REG_MAP_SIZE	9	/* st,ctl-map */
+#if STM32MP_DDR_DUAL_AXI_PORT
+#define DDRCTL_REG_PERF_SIZE	17	/* st,ctl-perf */
+#else
+#define DDRCTL_REG_PERF_SIZE	11	/* st,ctl-perf */
+#endif
+
+#if STM32MP_DDR_32BIT_INTERFACE
+#define DDRPHY_REG_REG_SIZE	11	/* st,phy-reg */
+#else
+#define DDRPHY_REG_REG_SIZE	9	/* st,phy-reg */
+#endif
+#define	DDRPHY_REG_TIMING_SIZE	10	/* st,phy-timing */
+
 #define DDRCTL_REG_REG(x)	DDRCTL_REG(x, stm32mp1_ddrctrl_reg)
-static const struct reg_desc ddr_reg[] = {
+static const struct stm32mp_ddr_reg_desc ddr_reg[DDRCTL_REG_REG_SIZE] = {
 	DDRCTL_REG_REG(mstr),
 	DDRCTL_REG_REG(mrctrl0),
 	DDRCTL_REG_REG(mrctrl1),
@@ -76,7 +87,7 @@ static const struct reg_desc ddr_reg[] = {
 };
 
 #define DDRCTL_REG_TIMING(x)	DDRCTL_REG(x, stm32mp1_ddrctrl_timing)
-static const struct reg_desc ddr_timing[] = {
+static const struct stm32mp_ddr_reg_desc ddr_timing[DDRCTL_REG_TIMING_SIZE] = {
 	DDRCTL_REG_TIMING(rfshtmg),
 	DDRCTL_REG_TIMING(dramtmg0),
 	DDRCTL_REG_TIMING(dramtmg1),
@@ -92,7 +103,7 @@ static const struct reg_desc ddr_timing[] = {
 };
 
 #define DDRCTL_REG_MAP(x)	DDRCTL_REG(x, stm32mp1_ddrctrl_map)
-static const struct reg_desc ddr_map[] = {
+static const struct stm32mp_ddr_reg_desc ddr_map[DDRCTL_REG_MAP_SIZE] = {
 	DDRCTL_REG_MAP(addrmap1),
 	DDRCTL_REG_MAP(addrmap2),
 	DDRCTL_REG_MAP(addrmap3),
@@ -105,7 +116,7 @@ static const struct reg_desc ddr_map[] = {
 };
 
 #define DDRCTL_REG_PERF(x)	DDRCTL_REG(x, stm32mp1_ddrctrl_perf)
-static const struct reg_desc ddr_perf[] = {
+static const struct stm32mp_ddr_reg_desc ddr_perf[DDRCTL_REG_PERF_SIZE] = {
 	DDRCTL_REG_PERF(sched),
 	DDRCTL_REG_PERF(sched1),
 	DDRCTL_REG_PERF(perfhpr1),
@@ -117,16 +128,18 @@ static const struct reg_desc ddr_perf[] = {
 	DDRCTL_REG_PERF(pcfgqos1_0),
 	DDRCTL_REG_PERF(pcfgwqos0_0),
 	DDRCTL_REG_PERF(pcfgwqos1_0),
+#if STM32MP_DDR_DUAL_AXI_PORT
 	DDRCTL_REG_PERF(pcfgr_1),
 	DDRCTL_REG_PERF(pcfgw_1),
 	DDRCTL_REG_PERF(pcfgqos0_1),
 	DDRCTL_REG_PERF(pcfgqos1_1),
 	DDRCTL_REG_PERF(pcfgwqos0_1),
 	DDRCTL_REG_PERF(pcfgwqos1_1),
+#endif
 };
 
 #define DDRPHY_REG_REG(x)	DDRPHY_REG(x, stm32mp1_ddrphy_reg)
-static const struct reg_desc ddrphy_reg[] = {
+static const struct stm32mp_ddr_reg_desc ddrphy_reg[DDRPHY_REG_REG_SIZE] = {
 	DDRPHY_REG_REG(pgcr),
 	DDRPHY_REG_REG(aciocr),
 	DDRPHY_REG_REG(dxccr),
@@ -136,12 +149,14 @@ static const struct reg_desc ddrphy_reg[] = {
 	DDRPHY_REG_REG(zq0cr1),
 	DDRPHY_REG_REG(dx0gcr),
 	DDRPHY_REG_REG(dx1gcr),
+#if STM32MP_DDR_32BIT_INTERFACE
 	DDRPHY_REG_REG(dx2gcr),
 	DDRPHY_REG_REG(dx3gcr),
+#endif
 };
 
 #define DDRPHY_REG_TIMING(x)	DDRPHY_REG(x, stm32mp1_ddrphy_timing)
-static const struct reg_desc ddrphy_timing[] = {
+static const struct stm32mp_ddr_reg_desc ddrphy_timing[DDRPHY_REG_TIMING_SIZE] = {
 	DDRPHY_REG_TIMING(ptr0),
 	DDRPHY_REG_TIMING(ptr1),
 	DDRPHY_REG_TIMING(ptr2),
@@ -154,174 +169,49 @@ static const struct reg_desc ddrphy_timing[] = {
 	DDRPHY_REG_TIMING(mr3),
 };
 
-#define DDRPHY_REG_CAL(x)	DDRPHY_REG(x, stm32mp1_ddrphy_cal)
-static const struct reg_desc ddrphy_cal[] = {
-	DDRPHY_REG_CAL(dx0dllcr),
-	DDRPHY_REG_CAL(dx0dqtr),
-	DDRPHY_REG_CAL(dx0dqstr),
-	DDRPHY_REG_CAL(dx1dllcr),
-	DDRPHY_REG_CAL(dx1dqtr),
-	DDRPHY_REG_CAL(dx1dqstr),
-	DDRPHY_REG_CAL(dx2dllcr),
-	DDRPHY_REG_CAL(dx2dqtr),
-	DDRPHY_REG_CAL(dx2dqstr),
-	DDRPHY_REG_CAL(dx3dllcr),
-	DDRPHY_REG_CAL(dx3dqtr),
-	DDRPHY_REG_CAL(dx3dqstr),
-};
-
-#define DDR_REG_DYN(x)						\
-	{							\
-		.name = #x,					\
-		.offset = offsetof(struct stm32mp1_ddrctl, x),	\
-		.par_offset = INVALID_OFFSET \
-	}
-
-static const struct reg_desc ddr_dyn[] = {
-	DDR_REG_DYN(stat),
-	DDR_REG_DYN(init0),
-	DDR_REG_DYN(dfimisc),
-	DDR_REG_DYN(dfistat),
-	DDR_REG_DYN(swctl),
-	DDR_REG_DYN(swstat),
-	DDR_REG_DYN(pctrl_0),
-	DDR_REG_DYN(pctrl_1),
-};
-
-#define DDRPHY_REG_DYN(x)					\
-	{							\
-		.name = #x,					\
-		.offset = offsetof(struct stm32mp1_ddrphy, x),	\
-		.par_offset = INVALID_OFFSET			\
-	}
-
-static const struct reg_desc ddrphy_dyn[] = {
-	DDRPHY_REG_DYN(pir),
-	DDRPHY_REG_DYN(pgsr),
-};
-
-enum reg_type {
-	REG_REG,
-	REG_TIMING,
-	REG_PERF,
-	REG_MAP,
-	REGPHY_REG,
-	REGPHY_TIMING,
-	REGPHY_CAL,
 /*
- * Dynamic registers => managed in driver or not changed,
- * can be dumped in interactive mode.
+ * REGISTERS ARRAY: used to parse device tree and interactive mode
  */
-	REG_DYN,
-	REGPHY_DYN,
-	REG_TYPE_NB
-};
-
-enum base_type {
-	DDR_BASE,
-	DDRPHY_BASE,
-	NONE_BASE
-};
-
-struct ddr_reg_info {
-	const char *name;
-	const struct reg_desc *desc;
-	uint8_t size;
-	enum base_type base;
-};
-
-static const struct ddr_reg_info ddr_registers[REG_TYPE_NB] = {
+static const struct stm32mp_ddr_reg_info ddr_registers[REG_TYPE_NB] = {
 	[REG_REG] = {
 		.name = "static",
 		.desc = ddr_reg,
-		.size = ARRAY_SIZE(ddr_reg),
+		.size = DDRCTL_REG_REG_SIZE,
 		.base = DDR_BASE
 	},
 	[REG_TIMING] = {
 		.name = "timing",
 		.desc = ddr_timing,
-		.size = ARRAY_SIZE(ddr_timing),
+		.size = DDRCTL_REG_TIMING_SIZE,
 		.base = DDR_BASE
 	},
 	[REG_PERF] = {
 		.name = "perf",
 		.desc = ddr_perf,
-		.size = ARRAY_SIZE(ddr_perf),
+		.size = DDRCTL_REG_PERF_SIZE,
 		.base = DDR_BASE
 	},
 	[REG_MAP] = {
 		.name = "map",
 		.desc = ddr_map,
-		.size = ARRAY_SIZE(ddr_map),
+		.size = DDRCTL_REG_MAP_SIZE,
 		.base = DDR_BASE
 	},
 	[REGPHY_REG] = {
 		.name = "static",
 		.desc = ddrphy_reg,
-		.size = ARRAY_SIZE(ddrphy_reg),
+		.size = DDRPHY_REG_REG_SIZE,
 		.base = DDRPHY_BASE
 	},
 	[REGPHY_TIMING] = {
 		.name = "timing",
 		.desc = ddrphy_timing,
-		.size = ARRAY_SIZE(ddrphy_timing),
-		.base = DDRPHY_BASE
-	},
-	[REGPHY_CAL] = {
-		.name = "cal",
-		.desc = ddrphy_cal,
-		.size = ARRAY_SIZE(ddrphy_cal),
-		.base = DDRPHY_BASE
-	},
-	[REG_DYN] = {
-		.name = "dyn",
-		.desc = ddr_dyn,
-		.size = ARRAY_SIZE(ddr_dyn),
-		.base = DDR_BASE
-	},
-	[REGPHY_DYN] = {
-		.name = "dyn",
-		.desc = ddrphy_dyn,
-		.size = ARRAY_SIZE(ddrphy_dyn),
+		.size = DDRPHY_REG_TIMING_SIZE,
 		.base = DDRPHY_BASE
 	},
 };
 
-static uintptr_t get_base_addr(const struct ddr_info *priv, enum base_type base)
-{
-	if (base == DDRPHY_BASE) {
-		return (uintptr_t)priv->phy;
-	} else {
-		return (uintptr_t)priv->ctl;
-	}
-}
-
-static void set_reg(const struct ddr_info *priv,
-		    enum reg_type type,
-		    const void *param)
-{
-	unsigned int i;
-	unsigned int value;
-	enum base_type base = ddr_registers[type].base;
-	uintptr_t base_addr = get_base_addr(priv, base);
-	const struct reg_desc *desc = ddr_registers[type].desc;
-
-	VERBOSE("init %s\n", ddr_registers[type].name);
-	for (i = 0; i < ddr_registers[type].size; i++) {
-		uintptr_t ptr = base_addr + desc[i].offset;
-
-		if (desc[i].par_offset == INVALID_OFFSET) {
-			ERROR("invalid parameter offset for %s", desc[i].name);
-			panic();
-		} else {
-			value = *((uint32_t *)((uintptr_t)param +
-					       desc[i].par_offset));
-			mmio_write_32(ptr, value);
-		}
-	}
-}
-
-static void stm32mp1_ddrphy_idone_wait(struct stm32mp1_ddrphy *phy)
+static void stm32mp1_ddrphy_idone_wait(struct stm32mp_ddrphy *phy)
 {
 	uint32_t pgsr;
 	int error = 0;
@@ -366,7 +256,7 @@ static void stm32mp1_ddrphy_idone_wait(struct stm32mp1_ddrphy *phy)
 		(uintptr_t)&phy->pgsr, pgsr);
 }
 
-static void stm32mp1_ddrphy_init(struct stm32mp1_ddrphy *phy, uint32_t pir)
+static void stm32mp1_ddrphy_init(struct stm32mp_ddrphy *phy, uint32_t pir)
 {
 	uint32_t pir_init = pir | DDRPHYC_PIR_INIT;
 
@@ -382,40 +272,8 @@ static void stm32mp1_ddrphy_init(struct stm32mp1_ddrphy *phy, uint32_t pir)
 	stm32mp1_ddrphy_idone_wait(phy);
 }
 
-/* Start quasi dynamic register update */
-static void stm32mp1_start_sw_done(struct stm32mp1_ddrctl *ctl)
-{
-	mmio_clrbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
-	VERBOSE("[0x%lx] swctl = 0x%x\n",
-		(uintptr_t)&ctl->swctl,  mmio_read_32((uintptr_t)&ctl->swctl));
-}
-
 /* Wait quasi dynamic register update */
-static void stm32mp1_wait_sw_done_ack(struct stm32mp1_ddrctl *ctl)
-{
-	uint64_t timeout;
-	uint32_t swstat;
-
-	mmio_setbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
-	VERBOSE("[0x%lx] swctl = 0x%x\n",
-		(uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl));
-
-	timeout = timeout_init_us(TIMEOUT_US_1S);
-	do {
-		swstat = mmio_read_32((uintptr_t)&ctl->swstat);
-		VERBOSE("[0x%lx] swstat = 0x%x ",
-			(uintptr_t)&ctl->swstat, swstat);
-		if (timeout_elapsed(timeout)) {
-			panic();
-		}
-	} while ((swstat & DDRCTRL_SWSTAT_SW_DONE_ACK) == 0U);
-
-	VERBOSE("[0x%lx] swstat = 0x%x\n",
-		(uintptr_t)&ctl->swstat, swstat);
-}
-
-/* Wait quasi dynamic register update */
-static void stm32mp1_wait_operating_mode(struct ddr_info *priv, uint32_t mode)
+static void stm32mp1_wait_operating_mode(struct stm32mp_ddr_priv *priv, uint32_t mode)
 {
 	uint64_t timeout;
 	uint32_t stat;
@@ -464,7 +322,7 @@ static void stm32mp1_wait_operating_mode(struct ddr_info *priv, uint32_t mode)
 }
 
 /* Mode Register Writes (MRW or MRS) */
-static void stm32mp1_mode_register_write(struct ddr_info *priv, uint8_t addr,
+static void stm32mp1_mode_register_write(struct stm32mp_ddr_priv *priv, uint8_t addr,
 					 uint32_t data)
 {
 	uint32_t mrctrl0;
@@ -519,7 +377,7 @@ static void stm32mp1_mode_register_write(struct ddr_info *priv, uint8_t addr,
 }
 
 /* Switch DDR3 from DLL-on to DLL-off */
-static void stm32mp1_ddr3_dll_off(struct ddr_info *priv)
+static void stm32mp1_ddr3_dll_off(struct stm32mp_ddr_priv *priv)
 {
 	uint32_t mr1 = mmio_read_32((uintptr_t)&priv->phy->mr1);
 	uint32_t mr2 = mmio_read_32((uintptr_t)&priv->phy->mr2);
@@ -610,14 +468,14 @@ static void stm32mp1_ddr3_dll_off(struct ddr_info *priv)
 	 * 9. Set the MSTR.dll_off_mode = 1.
 	 *    warning: MSTR.dll_off_mode is a quasi-dynamic type 2 field
 	 */
-	stm32mp1_start_sw_done(priv->ctl);
+	stm32mp_ddr_start_sw_done(priv->ctl);
 
 	mmio_setbits_32((uintptr_t)&priv->ctl->mstr, DDRCTRL_MSTR_DLL_OFF_MODE);
 	VERBOSE("[0x%lx] mstr = 0x%x\n",
 		(uintptr_t)&priv->ctl->mstr,
 		mmio_read_32((uintptr_t)&priv->ctl->mstr));
 
-	stm32mp1_wait_sw_done_ack(priv->ctl);
+	stm32mp_ddr_wait_sw_done_ack(priv->ctl);
 
 	/* 10. Change the clock frequency to the desired value. */
 
@@ -642,10 +500,12 @@ static void stm32mp1_ddr3_dll_off(struct ddr_info *priv)
 			DDRPHYC_DXNDLLCR_DLLDIS);
 	mmio_setbits_32((uintptr_t)&priv->phy->dx1dllcr,
 			DDRPHYC_DXNDLLCR_DLLDIS);
+#if STM32MP_DDR_32BIT_INTERFACE
 	mmio_setbits_32((uintptr_t)&priv->phy->dx2dllcr,
 			DDRPHYC_DXNDLLCR_DLLDIS);
 	mmio_setbits_32((uintptr_t)&priv->phy->dx3dllcr,
 			DDRPHYC_DXNDLLCR_DLLDIS);
+#endif
 
 	/* 12. Exit the self-refresh state by setting PWRCTL.selfref_sw = 0. */
 	mmio_clrbits_32((uintptr_t)&priv->ctl->pwrctl,
@@ -670,22 +530,22 @@ static void stm32mp1_ddr3_dll_off(struct ddr_info *priv)
 		mmio_read_32((uintptr_t)&priv->ctl->dbg1));
 }
 
-static void stm32mp1_refresh_disable(struct stm32mp1_ddrctl *ctl)
+static void stm32mp1_refresh_disable(struct stm32mp_ddrctl *ctl)
 {
-	stm32mp1_start_sw_done(ctl);
+	stm32mp_ddr_start_sw_done(ctl);
 	/* Quasi-dynamic register update*/
 	mmio_setbits_32((uintptr_t)&ctl->rfshctl3,
 			DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH);
 	mmio_clrbits_32((uintptr_t)&ctl->pwrctl, DDRCTRL_PWRCTL_POWERDOWN_EN);
 	mmio_clrbits_32((uintptr_t)&ctl->dfimisc,
 			DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN);
-	stm32mp1_wait_sw_done_ack(ctl);
+	stm32mp_ddr_wait_sw_done_ack(ctl);
 }
 
-static void stm32mp1_refresh_restore(struct stm32mp1_ddrctl *ctl,
+static void stm32mp1_refresh_restore(struct stm32mp_ddrctl *ctl,
 				     uint32_t rfshctl3, uint32_t pwrctl)
 {
-	stm32mp1_start_sw_done(ctl);
+	stm32mp_ddr_start_sw_done(ctl);
 	if ((rfshctl3 & DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH) == 0U) {
 		mmio_clrbits_32((uintptr_t)&ctl->rfshctl3,
 				DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH);
@@ -696,30 +556,21 @@ static void stm32mp1_refresh_restore(struct stm32mp1_ddrctl *ctl,
 	}
 	mmio_setbits_32((uintptr_t)&ctl->dfimisc,
 			DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN);
-	stm32mp1_wait_sw_done_ack(ctl);
+	stm32mp_ddr_wait_sw_done_ack(ctl);
 }
 
-static int board_ddr_power_init(enum ddr_type ddr_type)
-{
-	if (dt_pmic_status() > 0) {
-		return pmic_ddr_power_init(ddr_type);
-	}
-
-	return 0;
-}
-
-void stm32mp1_ddr_init(struct ddr_info *priv,
-		       struct stm32mp1_ddr_config *config)
+void stm32mp1_ddr_init(struct stm32mp_ddr_priv *priv,
+		       struct stm32mp_ddr_config *config)
 {
 	uint32_t pir;
 	int ret = -EINVAL;
 
 	if ((config->c_reg.mstr & DDRCTRL_MSTR_DDR3) != 0U) {
-		ret = board_ddr_power_init(STM32MP_DDR3);
+		ret = stm32mp_board_ddr_power_init(STM32MP_DDR3);
 	} else if ((config->c_reg.mstr & DDRCTRL_MSTR_LPDDR2) != 0U) {
-		ret = board_ddr_power_init(STM32MP_LPDDR2);
+		ret = stm32mp_board_ddr_power_init(STM32MP_LPDDR2);
 	} else if ((config->c_reg.mstr & DDRCTRL_MSTR_LPDDR3) != 0U) {
-		ret = board_ddr_power_init(STM32MP_LPDDR3);
+		ret = stm32mp_board_ddr_power_init(STM32MP_LPDDR3);
 	} else {
 		ERROR("DDR type not supported\n");
 	}
@@ -729,7 +580,7 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 	}
 
 	VERBOSE("name = %s\n", config->info.name);
-	VERBOSE("speed = %d kHz\n", config->info.speed);
+	VERBOSE("speed = %u kHz\n", config->info.speed);
 	VERBOSE("size  = 0x%x\n", config->info.size);
 
 	/* DDR INIT SEQUENCE */
@@ -774,7 +625,7 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 		(uintptr_t)&priv->ctl->dfimisc,
 		mmio_read_32((uintptr_t)&priv->ctl->dfimisc));
 
-	set_reg(priv, REG_REG, &config->c_reg);
+	stm32mp_ddr_set_reg(priv, REG_REG, &config->c_reg, ddr_registers);
 
 	/* DDR3 = don't set DLLOFF for init mode */
 	if ((config->c_reg.mstr &
@@ -788,8 +639,8 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 			mmio_read_32((uintptr_t)&priv->ctl->mstr));
 	}
 
-	set_reg(priv, REG_TIMING, &config->c_timing);
-	set_reg(priv, REG_MAP, &config->c_map);
+	stm32mp_ddr_set_reg(priv, REG_TIMING, &config->c_timing, ddr_registers);
+	stm32mp_ddr_set_reg(priv, REG_MAP, &config->c_map, ddr_registers);
 
 	/* Skip CTRL init, SDRAM init is done by PHY PUBL */
 	mmio_clrsetbits_32((uintptr_t)&priv->ctl->init0,
@@ -799,7 +650,7 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 		(uintptr_t)&priv->ctl->init0,
 		mmio_read_32((uintptr_t)&priv->ctl->init0));
 
-	set_reg(priv, REG_PERF, &config->c_perf);
+	stm32mp_ddr_set_reg(priv, REG_PERF, &config->c_perf, ddr_registers);
 
 	/*  2. deassert reset signal core_ddrc_rstn, aresetn and presetn */
 	mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCORERST);
@@ -810,9 +661,8 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 	 * 3. start PHY init by accessing relevant PUBL registers
 	 *    (DXGCR, DCR, PTR*, MR*, DTPR*)
 	 */
-	set_reg(priv, REGPHY_REG, &config->p_reg);
-	set_reg(priv, REGPHY_TIMING, &config->p_timing);
-	set_reg(priv, REGPHY_CAL, &config->p_cal);
+	stm32mp_ddr_set_reg(priv, REGPHY_REG, &config->p_reg, ddr_registers);
+	stm32mp_ddr_set_reg(priv, REGPHY_TIMING, &config->p_timing, ddr_registers);
 
 	/* DDR3 = don't set DLLOFF for init mode */
 	if ((config->c_reg.mstr &
@@ -850,7 +700,7 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 	 *  6. SET DFIMISC.dfi_init_complete_en to 1
 	 *  Enable quasi-dynamic register programming.
 	 */
-	stm32mp1_start_sw_done(priv->ctl);
+	stm32mp_ddr_start_sw_done(priv->ctl);
 
 	mmio_setbits_32((uintptr_t)&priv->ctl->dfimisc,
 			DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN);
@@ -858,7 +708,7 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 		(uintptr_t)&priv->ctl->dfimisc,
 		mmio_read_32((uintptr_t)&priv->ctl->dfimisc));
 
-	stm32mp1_wait_sw_done_ack(priv->ctl);
+	stm32mp_ddr_wait_sw_done_ack(priv->ctl);
 
 	/*
 	 *  7. Wait for DWC_ddr_umctl2 to move to normal operation mode
@@ -892,9 +742,14 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 	/*
 	 * 10. configure PUBL PIR register to specify which training step
 	 * to run
-	 * Warning : RVTRN  is not supported by this PUBL
+	 * RVTRN is executed only on LPDDR2/LPDDR3
 	 */
-	stm32mp1_ddrphy_init(priv->phy, DDRPHYC_PIR_QSTRN);
+	pir = DDRPHYC_PIR_QSTRN;
+	if ((config->c_reg.mstr & DDRCTRL_MSTR_DDR3) == 0U) {
+		pir |= DDRPHYC_PIR_RVTRN;
+	}
+
+	stm32mp1_ddrphy_init(priv->phy, pir);
 
 	/* 11. monitor PUB PGSR.IDONE to poll cpmpletion of training sequence */
 	stm32mp1_ddrphy_idone_wait(priv->phy);
@@ -905,17 +760,5 @@ void stm32mp1_ddr_init(struct ddr_info *priv,
 	stm32mp1_refresh_restore(priv->ctl, config->c_reg.rfshctl3,
 				 config->c_reg.pwrctl);
 
-	/* Enable uMCTL2 AXI port 0 */
-	mmio_setbits_32((uintptr_t)&priv->ctl->pctrl_0,
-			DDRCTRL_PCTRL_N_PORT_EN);
-	VERBOSE("[0x%lx] pctrl_0 = 0x%x\n",
-		(uintptr_t)&priv->ctl->pctrl_0,
-		mmio_read_32((uintptr_t)&priv->ctl->pctrl_0));
-
-	/* Enable uMCTL2 AXI port 1 */
-	mmio_setbits_32((uintptr_t)&priv->ctl->pctrl_1,
-			DDRCTRL_PCTRL_N_PORT_EN);
-	VERBOSE("[0x%lx] pctrl_1 = 0x%x\n",
-		(uintptr_t)&priv->ctl->pctrl_1,
-		mmio_read_32((uintptr_t)&priv->ctl->pctrl_1));
+	stm32mp_ddr_enable_axi_port(priv->ctl);
 }
diff --git a/drivers/st/ddr/stm32mp1_ddr_helpers.c b/drivers/st/ddr/stm32mp1_ddr_helpers.c
index fcb4cfcfd..e0621b513 100644
--- a/drivers/st/ddr/stm32mp1_ddr_helpers.c
+++ b/drivers/st/ddr/stm32mp1_ddr_helpers.c
@@ -1,21 +1,23 @@
 /*
- * Copyright (c) 2017-2019, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <platform_def.h>
-
 #include <drivers/st/stm32mp1_ddr_helpers.h>
 #include <lib/mmio.h>
 
+#include <platform_def.h>
+
 void ddr_enable_clock(void)
 {
 	stm32mp1_clk_rcc_regs_lock();
 
 	mmio_setbits_32(stm32mp_rcc_base() + RCC_DDRITFCR,
 			RCC_DDRITFCR_DDRC1EN |
+#if STM32MP_DDR_DUAL_AXI_PORT
 			RCC_DDRITFCR_DDRC2EN |
+#endif
 			RCC_DDRITFCR_DDRPHYCEN |
 			RCC_DDRITFCR_DDRPHYCAPBEN |
 			RCC_DDRITFCR_DDRCAPBEN);
diff --git a/drivers/st/ddr/stm32mp1_ram.c b/drivers/st/ddr/stm32mp1_ram.c
index 064e3180e..b510c8fa2 100644
--- a/drivers/st/ddr/stm32mp1_ram.c
+++ b/drivers/st/ddr/stm32mp1_ram.c
@@ -1,15 +1,11 @@
 /*
- * Copyright (C) 2018-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
  */
 
 #include <errno.h>
 
-#include <libfdt.h>
-
-#include <platform_def.h>
-
 #include <arch_helpers.h>
 #include <common/debug.h>
 #include <common/fdt_wrappers.h>
@@ -17,14 +13,17 @@
 #include <drivers/st/stm32mp1_ddr.h>
 #include <drivers/st/stm32mp1_ddr_helpers.h>
 #include <drivers/st/stm32mp1_ram.h>
+#include <drivers/st/stm32mp_ddr.h>
+#include <drivers/st/stm32mp_ddr_test.h>
+#include <drivers/st/stm32mp_ram.h>
 #include <lib/mmio.h>
+#include <libfdt.h>
 
-#define DDR_PATTERN	0xAAAAAAAAU
-#define DDR_ANTIPATTERN	0x55555555U
+#include <platform_def.h>
 
-static struct ddr_info ddr_priv_data;
+static struct stm32mp_ddr_priv ddr_priv_data;
 
-int stm32mp1_ddr_clk_enable(struct ddr_info *priv, uint32_t mem_speed)
+int stm32mp1_ddr_clk_enable(struct stm32mp_ddr_priv *priv, uint32_t mem_speed)
 {
 	unsigned long ddrphy_clk, ddr_clk, mem_speed_hz;
 
@@ -32,7 +31,7 @@ int stm32mp1_ddr_clk_enable(struct ddr_info *priv, uint32_t mem_speed)
 
 	ddrphy_clk = clk_get_rate(DDRPHYC);
 
-	VERBOSE("DDR: mem_speed (%d kHz), RCC %ld kHz\n",
+	VERBOSE("DDR: mem_speed (%u kHz), RCC %lu kHz\n",
 		mem_speed, ddrphy_clk / 1000U);
 
 	mem_speed_hz = mem_speed * 1000U;
@@ -44,157 +43,29 @@ int stm32mp1_ddr_clk_enable(struct ddr_info *priv, uint32_t mem_speed)
 		ddr_clk = mem_speed_hz - ddrphy_clk;
 	}
 	if (ddr_clk > (mem_speed_hz / 10)) {
-		ERROR("DDR expected freq %d kHz, current is %ld kHz\n",
+		ERROR("DDR expected freq %u kHz, current is %lu kHz\n",
 		      mem_speed, ddrphy_clk / 1000U);
 		return -1;
 	}
 	return 0;
 }
 
-/*******************************************************************************
- * This function tests the DDR data bus wiring.
- * This is inspired from the Data Bus Test algorithm written by Michael Barr
- * in "Programming Embedded Systems in C and C++" book.
- * resources.oreilly.com/examples/9781565923546/blob/master/Chapter6/
- * File: memtest.c - This source code belongs to Public Domain.
- * Returns 0 if success, and address value else.
- ******************************************************************************/
-static uint32_t ddr_test_data_bus(void)
-{
-	uint32_t pattern;
-
-	for (pattern = 1U; pattern != 0U; pattern <<= 1) {
-		mmio_write_32(STM32MP_DDR_BASE, pattern);
-
-		if (mmio_read_32(STM32MP_DDR_BASE) != pattern) {
-			return (uint32_t)STM32MP_DDR_BASE;
-		}
-	}
-
-	return 0;
-}
-
-/*******************************************************************************
- * This function tests the DDR address bus wiring.
- * This is inspired from the Data Bus Test algorithm written by Michael Barr
- * in "Programming Embedded Systems in C and C++" book.
- * resources.oreilly.com/examples/9781565923546/blob/master/Chapter6/
- * File: memtest.c - This source code belongs to Public Domain.
- * Returns 0 if success, and address value else.
- ******************************************************************************/
-static uint32_t ddr_test_addr_bus(void)
-{
-	uint64_t addressmask = (ddr_priv_data.info.size - 1U);
-	uint64_t offset;
-	uint64_t testoffset = 0;
-
-	/* Write the default pattern at each of the power-of-two offsets. */
-	for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
-	     offset <<= 1) {
-		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)offset,
-			      DDR_PATTERN);
-	}
-
-	/* Check for address bits stuck high. */
-	mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
-		      DDR_ANTIPATTERN);
-
-	for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
-	     offset <<= 1) {
-		if (mmio_read_32(STM32MP_DDR_BASE + (uint32_t)offset) !=
-		    DDR_PATTERN) {
-			return (uint32_t)(STM32MP_DDR_BASE + offset);
-		}
-	}
-
-	mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset, DDR_PATTERN);
-
-	/* Check for address bits stuck low or shorted. */
-	for (testoffset = sizeof(uint32_t); (testoffset & addressmask) != 0U;
-	     testoffset <<= 1) {
-		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
-			      DDR_ANTIPATTERN);
-
-		if (mmio_read_32(STM32MP_DDR_BASE) != DDR_PATTERN) {
-			return STM32MP_DDR_BASE;
-		}
-
-		for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
-		     offset <<= 1) {
-			if ((mmio_read_32(STM32MP_DDR_BASE +
-					  (uint32_t)offset) != DDR_PATTERN) &&
-			    (offset != testoffset)) {
-				return (uint32_t)(STM32MP_DDR_BASE + offset);
-			}
-		}
-
-		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
-			      DDR_PATTERN);
-	}
-
-	return 0;
-}
-
-/*******************************************************************************
- * This function checks the DDR size. It has to be run with Data Cache off.
- * This test is run before data have been put in DDR, and is only done for
- * cold boot. The DDR data can then be overwritten, and it is not useful to
- * restore its content.
- * Returns DDR computed size.
- ******************************************************************************/
-static uint32_t ddr_check_size(void)
-{
-	uint32_t offset = sizeof(uint32_t);
-
-	mmio_write_32(STM32MP_DDR_BASE, DDR_PATTERN);
-
-	while (offset < STM32MP_DDR_MAX_SIZE) {
-		mmio_write_32(STM32MP_DDR_BASE + offset, DDR_ANTIPATTERN);
-		dsb();
-
-		if (mmio_read_32(STM32MP_DDR_BASE) != DDR_PATTERN) {
-			break;
-		}
-
-		offset <<= 1;
-	}
-
-	INFO("Memory size = 0x%x (%d MB)\n", offset, offset / (1024U * 1024U));
-
-	return offset;
-}
-
 static int stm32mp1_ddr_setup(void)
 {
-	struct ddr_info *priv = &ddr_priv_data;
+	struct stm32mp_ddr_priv *priv = &ddr_priv_data;
 	int ret;
-	struct stm32mp1_ddr_config config;
-	int node, len;
-	uint32_t uret, idx;
+	struct stm32mp_ddr_config config;
+	int node;
+	uint32_t uret;
 	void *fdt;
 
-#define PARAM(x, y)							\
-	{								\
-		.name = x,						\
-		.offset = offsetof(struct stm32mp1_ddr_config, y),	\
-		.size = sizeof(config.y) / sizeof(uint32_t)		\
-	}
-
-#define CTL_PARAM(x) PARAM("st,ctl-"#x, c_##x)
-#define PHY_PARAM(x) PARAM("st,phy-"#x, p_##x)
-
-	const struct {
-		const char *name; /* Name in DT */
-		const uint32_t offset; /* Offset in config struct */
-		const uint32_t size;   /* Size of parameters */
-	} param[] = {
+	const struct stm32mp_ddr_param param[] = {
 		CTL_PARAM(reg),
 		CTL_PARAM(timing),
 		CTL_PARAM(map),
 		CTL_PARAM(perf),
 		PHY_PARAM(reg),
 		PHY_PARAM(timing),
-		PHY_PARAM(cal)
 	};
 
 	if (fdt_get_address(&fdt) == 0) {
@@ -207,36 +78,14 @@ static int stm32mp1_ddr_setup(void)
 		return -EINVAL;
 	}
 
-	ret = fdt_read_uint32(fdt, node, "st,mem-speed", &config.info.speed);
+	ret = stm32mp_ddr_dt_get_info(fdt, node, &config.info);
 	if (ret < 0) {
-		VERBOSE("%s: no st,mem-speed\n", __func__);
-		return -EINVAL;
+		return ret;
 	}
-	ret = fdt_read_uint32(fdt, node, "st,mem-size", &config.info.size);
+
+	ret = stm32mp_ddr_dt_get_param(fdt, node, param, ARRAY_SIZE(param), (uintptr_t)&config);
 	if (ret < 0) {
-		VERBOSE("%s: no st,mem-size\n", __func__);
-		return -EINVAL;
-	}
-	config.info.name = fdt_getprop(fdt, node, "st,mem-name", &len);
-	if (config.info.name == NULL) {
-		VERBOSE("%s: no st,mem-name\n", __func__);
-		return -EINVAL;
-	}
-	INFO("RAM: %s\n", config.info.name);
-
-	for (idx = 0; idx < ARRAY_SIZE(param); idx++) {
-		ret = fdt_read_uint32_array(fdt, node, param[idx].name,
-					    param[idx].size,
-					    (void *)((uintptr_t)&config +
-						     param[idx].offset));
-
-		VERBOSE("%s: %s[0x%x] = %d\n", __func__,
-			param[idx].name, param[idx].size, ret);
-		if (ret != 0) {
-			ERROR("%s: Cannot read %s\n",
-			      __func__, param[idx].name);
-			return -EINVAL;
-		}
+		return ret;
 	}
 
 	/* Disable axidcg clock gating during init */
@@ -256,21 +105,21 @@ static int stm32mp1_ddr_setup(void)
 		panic();
 	}
 
-	uret = ddr_test_data_bus();
+	uret = stm32mp_ddr_test_data_bus();
 	if (uret != 0U) {
 		ERROR("DDR data bus test: can't access memory @ 0x%x\n",
 		      uret);
 		panic();
 	}
 
-	uret = ddr_test_addr_bus();
+	uret = stm32mp_ddr_test_addr_bus(config.info.size);
 	if (uret != 0U) {
 		ERROR("DDR addr bus test: can't access memory @ 0x%x\n",
 		      uret);
 		panic();
 	}
 
-	uret = ddr_check_size();
+	uret = stm32mp_ddr_check_size();
 	if (uret < config.info.size) {
 		ERROR("DDR size: 0x%x does not match DT config: 0x%x\n",
 		      uret, config.info.size);
@@ -286,12 +135,12 @@ static int stm32mp1_ddr_setup(void)
 
 int stm32mp1_ddr_probe(void)
 {
-	struct ddr_info *priv = &ddr_priv_data;
+	struct stm32mp_ddr_priv *priv = &ddr_priv_data;
 
 	VERBOSE("STM32MP DDR probe\n");
 
-	priv->ctl = (struct stm32mp1_ddrctl *)stm32mp_ddrctrl_base();
-	priv->phy = (struct stm32mp1_ddrphy *)stm32mp_ddrphyc_base();
+	priv->ctl = (struct stm32mp_ddrctl *)stm32mp_ddrctrl_base();
+	priv->phy = (struct stm32mp_ddrphy *)stm32mp_ddrphyc_base();
 	priv->pwr = stm32mp_pwr_base();
 	priv->rcc = stm32mp_rcc_base();
 
diff --git a/drivers/st/ddr/stm32mp_ddr.c b/drivers/st/ddr/stm32mp_ddr.c
new file mode 100644
index 000000000..ffc85ea3e
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ddr.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/delay_timer.h>
+#include <drivers/st/stm32mp_ddr.h>
+#include <drivers/st/stm32mp_ddrctrl_regs.h>
+#include <drivers/st/stm32mp_pmic.h>
+#include <lib/mmio.h>
+
+#include <platform_def.h>
+
+#define INVALID_OFFSET	0xFFU
+
+static uintptr_t get_base_addr(const struct stm32mp_ddr_priv *priv, enum stm32mp_ddr_base_type base)
+{
+	if (base == DDRPHY_BASE) {
+		return (uintptr_t)priv->phy;
+	} else {
+		return (uintptr_t)priv->ctl;
+	}
+}
+
+void stm32mp_ddr_set_reg(const struct stm32mp_ddr_priv *priv, enum stm32mp_ddr_reg_type type,
+			 const void *param, const struct stm32mp_ddr_reg_info *ddr_registers)
+{
+	unsigned int i;
+	unsigned int value;
+	enum stm32mp_ddr_base_type base = ddr_registers[type].base;
+	uintptr_t base_addr = get_base_addr(priv, base);
+	const struct stm32mp_ddr_reg_desc *desc = ddr_registers[type].desc;
+
+	VERBOSE("init %s\n", ddr_registers[type].name);
+	for (i = 0; i < ddr_registers[type].size; i++) {
+		uintptr_t ptr = base_addr + desc[i].offset;
+
+		if (desc[i].par_offset == INVALID_OFFSET) {
+			ERROR("invalid parameter offset for %s", desc[i].name);
+			panic();
+		} else {
+			value = *((uint32_t *)((uintptr_t)param +
+					       desc[i].par_offset));
+			mmio_write_32(ptr, value);
+		}
+	}
+}
+
+/* Start quasi dynamic register update */
+void stm32mp_ddr_start_sw_done(struct stm32mp_ddrctl *ctl)
+{
+	mmio_clrbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
+	VERBOSE("[0x%lx] swctl = 0x%x\n",
+		(uintptr_t)&ctl->swctl,  mmio_read_32((uintptr_t)&ctl->swctl));
+}
+
+/* Wait quasi dynamic register update */
+void stm32mp_ddr_wait_sw_done_ack(struct stm32mp_ddrctl *ctl)
+{
+	uint64_t timeout;
+	uint32_t swstat;
+
+	mmio_setbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE);
+	VERBOSE("[0x%lx] swctl = 0x%x\n",
+		(uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl));
+
+	timeout = timeout_init_us(TIMEOUT_US_1S);
+	do {
+		swstat = mmio_read_32((uintptr_t)&ctl->swstat);
+		VERBOSE("[0x%lx] swstat = 0x%x ",
+			(uintptr_t)&ctl->swstat, swstat);
+		if (timeout_elapsed(timeout)) {
+			panic();
+		}
+	} while ((swstat & DDRCTRL_SWSTAT_SW_DONE_ACK) == 0U);
+
+	VERBOSE("[0x%lx] swstat = 0x%x\n",
+		(uintptr_t)&ctl->swstat, swstat);
+}
+
+void stm32mp_ddr_enable_axi_port(struct stm32mp_ddrctl *ctl)
+{
+	/* Enable uMCTL2 AXI port 0 */
+	mmio_setbits_32((uintptr_t)&ctl->pctrl_0, DDRCTRL_PCTRL_N_PORT_EN);
+	VERBOSE("[0x%lx] pctrl_0 = 0x%x\n", (uintptr_t)&ctl->pctrl_0,
+		mmio_read_32((uintptr_t)&ctl->pctrl_0));
+
+#if STM32MP_DDR_DUAL_AXI_PORT
+	/* Enable uMCTL2 AXI port 1 */
+	mmio_setbits_32((uintptr_t)&ctl->pctrl_1, DDRCTRL_PCTRL_N_PORT_EN);
+	VERBOSE("[0x%lx] pctrl_1 = 0x%x\n", (uintptr_t)&ctl->pctrl_1,
+		mmio_read_32((uintptr_t)&ctl->pctrl_1));
+#endif
+
+}
+
+int stm32mp_board_ddr_power_init(enum ddr_type ddr_type)
+{
+	if (dt_pmic_status() > 0) {
+		return pmic_ddr_power_init(ddr_type);
+	}
+
+	return 0;
+}
diff --git a/drivers/st/ddr/stm32mp_ddr_test.c b/drivers/st/ddr/stm32mp_ddr_test.c
new file mode 100644
index 000000000..6b98095d6
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ddr_test.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/st/stm32mp_ddr_test.h>
+#include <lib/mmio.h>
+
+#include <platform_def.h>
+
+#define DDR_PATTERN	0xAAAAAAAAU
+#define DDR_ANTIPATTERN	0x55555555U
+
+/*******************************************************************************
+ * This function tests a simple read/write access to the DDR.
+ * Note that the previous content is restored after test.
+ * Returns 0 if success, and address value else.
+ ******************************************************************************/
+uint32_t stm32mp_ddr_test_rw_access(void)
+{
+	uint32_t saved_value = mmio_read_32(STM32MP_DDR_BASE);
+
+	mmio_write_32(STM32MP_DDR_BASE, DDR_PATTERN);
+
+	if (mmio_read_32(STM32MP_DDR_BASE) != DDR_PATTERN) {
+		return (uint32_t)STM32MP_DDR_BASE;
+	}
+
+	mmio_write_32(STM32MP_DDR_BASE, saved_value);
+
+	return 0U;
+}
+
+/*******************************************************************************
+ * This function tests the DDR data bus wiring.
+ * This is inspired from the Data Bus Test algorithm written by Michael Barr
+ * in "Programming Embedded Systems in C and C++" book.
+ * resources.oreilly.com/examples/9781565923546/blob/master/Chapter6/
+ * File: memtest.c - This source code belongs to Public Domain.
+ * Returns 0 if success, and address value else.
+ ******************************************************************************/
+uint32_t stm32mp_ddr_test_data_bus(void)
+{
+	uint32_t pattern;
+
+	for (pattern = 1U; pattern != 0U; pattern <<= 1U) {
+		mmio_write_32(STM32MP_DDR_BASE, pattern);
+
+		if (mmio_read_32(STM32MP_DDR_BASE) != pattern) {
+			return (uint32_t)STM32MP_DDR_BASE;
+		}
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * This function tests the DDR address bus wiring.
+ * This is inspired from the Data Bus Test algorithm written by Michael Barr
+ * in "Programming Embedded Systems in C and C++" book.
+ * resources.oreilly.com/examples/9781565923546/blob/master/Chapter6/
+ * File: memtest.c - This source code belongs to Public Domain.
+ * size: size in bytes of the DDR memory device.
+ * Returns 0 if success, and address value else.
+ ******************************************************************************/
+uint32_t stm32mp_ddr_test_addr_bus(uint64_t size)
+{
+	uint64_t addressmask = size - 1U;
+	uint64_t offset;
+	uint64_t testoffset = 0U;
+
+	/* Write the default pattern at each of the power-of-two offsets. */
+	for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
+	     offset <<= 1U) {
+		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)offset,
+			      DDR_PATTERN);
+	}
+
+	/* Check for address bits stuck high. */
+	mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
+		      DDR_ANTIPATTERN);
+
+	for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
+	     offset <<= 1U) {
+		if (mmio_read_32(STM32MP_DDR_BASE + (uint32_t)offset) !=
+		    DDR_PATTERN) {
+			return (uint32_t)(STM32MP_DDR_BASE + offset);
+		}
+	}
+
+	mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset, DDR_PATTERN);
+
+	/* Check for address bits stuck low or shorted. */
+	for (testoffset = sizeof(uint32_t); (testoffset & addressmask) != 0U;
+	     testoffset <<= 1U) {
+		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
+			      DDR_ANTIPATTERN);
+
+		if (mmio_read_32(STM32MP_DDR_BASE) != DDR_PATTERN) {
+			return STM32MP_DDR_BASE;
+		}
+
+		for (offset = sizeof(uint32_t); (offset & addressmask) != 0U;
+		     offset <<= 1) {
+			if ((mmio_read_32(STM32MP_DDR_BASE +
+					  (uint32_t)offset) != DDR_PATTERN) &&
+			    (offset != testoffset)) {
+				return (uint32_t)(STM32MP_DDR_BASE + offset);
+			}
+		}
+
+		mmio_write_32(STM32MP_DDR_BASE + (uint32_t)testoffset,
+			      DDR_PATTERN);
+	}
+
+	return 0U;
+}
+
+/*******************************************************************************
+ * This function checks the DDR size. It has to be run with Data Cache off.
+ * This test is run before data have been put in DDR, and is only done for
+ * cold boot. The DDR data can then be overwritten, and it is not useful to
+ * restore its content.
+ * Returns DDR computed size.
+ ******************************************************************************/
+uint32_t stm32mp_ddr_check_size(void)
+{
+	uint32_t offset = sizeof(uint32_t);
+
+	mmio_write_32(STM32MP_DDR_BASE, DDR_PATTERN);
+
+	while (offset < STM32MP_DDR_MAX_SIZE) {
+		mmio_write_32(STM32MP_DDR_BASE + offset, DDR_ANTIPATTERN);
+		dsb();
+
+		if (mmio_read_32(STM32MP_DDR_BASE) != DDR_PATTERN) {
+			break;
+		}
+
+		offset <<= 1U;
+	}
+
+	INFO("Memory size = 0x%x (%u MB)\n", offset, offset / (1024U * 1024U));
+
+	return offset;
+}
diff --git a/drivers/st/ddr/stm32mp_ram.c b/drivers/st/ddr/stm32mp_ram.c
new file mode 100644
index 000000000..1e555adbb
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ram.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <common/fdt_wrappers.h>
+#include <drivers/st/stm32mp_ram.h>
+#include <libfdt.h>
+
+#include <platform_def.h>
+
+int stm32mp_ddr_dt_get_info(void *fdt, int node, struct stm32mp_ddr_info *info)
+{
+	int ret;
+
+	ret = fdt_read_uint32(fdt, node, "st,mem-speed", &info->speed);
+	if (ret < 0) {
+		VERBOSE("%s: no st,mem-speed\n", __func__);
+		return -EINVAL;
+	}
+	ret = fdt_read_uint32(fdt, node, "st,mem-size", &info->size);
+	if (ret < 0) {
+		VERBOSE("%s: no st,mem-size\n", __func__);
+		return -EINVAL;
+	}
+	info->name = fdt_getprop(fdt, node, "st,mem-name", NULL);
+	if (info->name == NULL) {
+		VERBOSE("%s: no st,mem-name\n", __func__);
+		return -EINVAL;
+	}
+
+	INFO("RAM: %s\n", info->name);
+
+	return 0;
+}
+
+int stm32mp_ddr_dt_get_param(void *fdt, int node, const struct stm32mp_ddr_param *param,
+			     uint32_t param_size, uintptr_t config)
+{
+	int ret;
+	uint32_t idx;
+
+	for (idx = 0U; idx < param_size; idx++) {
+		ret = fdt_read_uint32_array(fdt, node, param[idx].name, param[idx].size,
+					    (void *)(config + param[idx].offset));
+
+		VERBOSE("%s: %s[0x%x] = %d\n", __func__, param[idx].name, param[idx].size, ret);
+		if (ret != 0) {
+			ERROR("%s: Cannot read %s, error=%d\n", __func__, param[idx].name, ret);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
diff --git a/fdts/stm32mp15-ddr.dtsi b/fdts/stm32mp15-ddr.dtsi
index e5efd9256..d0b3a17fb 100644
--- a/fdts/stm32mp15-ddr.dtsi
+++ b/fdts/stm32mp15-ddr.dtsi
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
 /*
- * Copyright (C) 2018-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2022, STMicroelectronics - All Rights Reserved
  */
 
 &ddr {
@@ -109,19 +109,4 @@
 		DDR_MR2
 		DDR_MR3
 	>;
-
-	st,phy-cal = <
-		DDR_DX0DLLCR
-		DDR_DX0DQTR
-		DDR_DX0DQSTR
-		DDR_DX1DLLCR
-		DDR_DX1DQTR
-		DDR_DX1DQSTR
-		DDR_DX2DLLCR
-		DDR_DX2DQTR
-		DDR_DX2DQSTR
-		DDR_DX3DLLCR
-		DDR_DX3DQTR
-		DDR_DX3DQSTR
-	>;
 };
diff --git a/fdts/stm32mp15-ddr3-1x4Gb-1066-binG.dtsi b/fdts/stm32mp15-ddr3-1x4Gb-1066-binG.dtsi
index c6d6434a9..5d1001d9b 100644
--- a/fdts/stm32mp15-ddr3-1x4Gb-1066-binG.dtsi
+++ b/fdts/stm32mp15-ddr3-1x4Gb-1066-binG.dtsi
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
 /*
- * Copyright (c) 2018-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2018-2022, STMicroelectronics - All Rights Reserved
  */
 
 /*
@@ -100,20 +100,8 @@
 #define DDR_ODTCR 0x00010000
 #define DDR_ZQ0CR1 0x00000038
 #define DDR_DX0GCR 0x0000CE81
-#define DDR_DX0DLLCR 0x40000000
-#define DDR_DX0DQTR 0xFFFFFFFF
-#define DDR_DX0DQSTR 0x3DB02000
 #define DDR_DX1GCR 0x0000CE81
-#define DDR_DX1DLLCR 0x40000000
-#define DDR_DX1DQTR 0xFFFFFFFF
-#define DDR_DX1DQSTR 0x3DB02000
 #define DDR_DX2GCR 0x0000CE80
-#define DDR_DX2DLLCR 0x40000000
-#define DDR_DX2DQTR 0xFFFFFFFF
-#define DDR_DX2DQSTR 0x3DB02000
 #define DDR_DX3GCR 0x0000CE80
-#define DDR_DX3DLLCR 0x40000000
-#define DDR_DX3DQTR 0xFFFFFFFF
-#define DDR_DX3DQSTR 0x3DB02000
 
 #include "stm32mp15-ddr.dtsi"
diff --git a/fdts/stm32mp15-ddr3-2x4Gb-1066-binG.dtsi b/fdts/stm32mp15-ddr3-2x4Gb-1066-binG.dtsi
index 9614ab4c8..6494cebd2 100644
--- a/fdts/stm32mp15-ddr3-2x4Gb-1066-binG.dtsi
+++ b/fdts/stm32mp15-ddr3-2x4Gb-1066-binG.dtsi
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
 /*
- * Copyright (c) 2018-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2018-2022, STMicroelectronics - All Rights Reserved
  */
 
 /*
@@ -100,20 +100,8 @@
 #define DDR_ODTCR 0x00010000
 #define DDR_ZQ0CR1 0x00000038
 #define DDR_DX0GCR 0x0000CE81
-#define DDR_DX0DLLCR 0x40000000
-#define DDR_DX0DQTR 0xFFFFFFFF
-#define DDR_DX0DQSTR 0x3DB02000
 #define DDR_DX1GCR 0x0000CE81
-#define DDR_DX1DLLCR 0x40000000
-#define DDR_DX1DQTR 0xFFFFFFFF
-#define DDR_DX1DQSTR 0x3DB02000
 #define DDR_DX2GCR 0x0000CE81
-#define DDR_DX2DLLCR 0x40000000
-#define DDR_DX2DQTR 0xFFFFFFFF
-#define DDR_DX2DQSTR 0x3DB02000
 #define DDR_DX3GCR 0x0000CE81
-#define DDR_DX3DLLCR 0x40000000
-#define DDR_DX3DQTR 0xFFFFFFFF
-#define DDR_DX3DQSTR 0x3DB02000
 
 #include "stm32mp15-ddr.dtsi"
diff --git a/include/drivers/st/stm32mp1_ddr.h b/include/drivers/st/stm32mp1_ddr.h
index 4ab37d6b4..df71f35b1 100644
--- a/include/drivers/st/stm32mp1_ddr.h
+++ b/include/drivers/st/stm32mp1_ddr.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2019, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
  */
@@ -10,29 +10,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-#define DT_DDR_COMPAT	"st,stm32mp1-ddr"
-
-struct stm32mp1_ddr_size {
-	uint64_t base;
-	uint64_t size;
-};
-
-/**
- * struct ddr_info
- *
- * @dev: pointer for the device
- * @info: UCLASS RAM information
- * @ctl: DDR controleur base address
- * @phy: DDR PHY base address
- * @syscfg: syscfg base address
- */
-struct ddr_info {
-	struct stm32mp1_ddr_size info;
-	struct stm32mp1_ddrctl *ctl;
-	struct stm32mp1_ddrphy *phy;
-	uintptr_t pwr;
-	uintptr_t rcc;
-};
+#include <drivers/st/stm32mp_ddr.h>
 
 struct stm32mp1_ddrctrl_reg {
 	uint32_t mstr;
@@ -101,12 +79,14 @@ struct stm32mp1_ddrctrl_perf {
 	uint32_t pcfgqos1_0;
 	uint32_t pcfgwqos0_0;
 	uint32_t pcfgwqos1_0;
+#if STM32MP_DDR_DUAL_AXI_PORT
 	uint32_t pcfgr_1;
 	uint32_t pcfgw_1;
 	uint32_t pcfgqos0_1;
 	uint32_t pcfgqos1_1;
 	uint32_t pcfgwqos0_1;
 	uint32_t pcfgwqos1_1;
+#endif
 };
 
 struct stm32mp1_ddrphy_reg {
@@ -119,8 +99,10 @@ struct stm32mp1_ddrphy_reg {
 	uint32_t zq0cr1;
 	uint32_t dx0gcr;
 	uint32_t dx1gcr;
+#if STM32MP_DDR_32BIT_INTERFACE
 	uint32_t dx2gcr;
 	uint32_t dx3gcr;
+#endif
 };
 
 struct stm32mp1_ddrphy_timing {
@@ -136,39 +118,17 @@ struct stm32mp1_ddrphy_timing {
 	uint32_t mr3;
 };
 
-struct stm32mp1_ddrphy_cal {
-	uint32_t dx0dllcr;
-	uint32_t dx0dqtr;
-	uint32_t dx0dqstr;
-	uint32_t dx1dllcr;
-	uint32_t dx1dqtr;
-	uint32_t dx1dqstr;
-	uint32_t dx2dllcr;
-	uint32_t dx2dqtr;
-	uint32_t dx2dqstr;
-	uint32_t dx3dllcr;
-	uint32_t dx3dqtr;
-	uint32_t dx3dqstr;
-};
-
-struct stm32mp1_ddr_info {
-	const char *name;
-	uint32_t speed; /* in kHZ */
-	uint32_t size;  /* Memory size in byte = col * row * width */
-};
-
-struct stm32mp1_ddr_config {
-	struct stm32mp1_ddr_info info;
+struct stm32mp_ddr_config {
+	struct stm32mp_ddr_info info;
 	struct stm32mp1_ddrctrl_reg c_reg;
 	struct stm32mp1_ddrctrl_timing c_timing;
 	struct stm32mp1_ddrctrl_map c_map;
 	struct stm32mp1_ddrctrl_perf c_perf;
 	struct stm32mp1_ddrphy_reg p_reg;
 	struct stm32mp1_ddrphy_timing p_timing;
-	struct stm32mp1_ddrphy_cal p_cal;
 };
 
-int stm32mp1_ddr_clk_enable(struct ddr_info *priv, uint32_t mem_speed);
-void stm32mp1_ddr_init(struct ddr_info *priv,
-		       struct stm32mp1_ddr_config *config);
+int stm32mp1_ddr_clk_enable(struct stm32mp_ddr_priv *priv, uint32_t mem_speed);
+void stm32mp1_ddr_init(struct stm32mp_ddr_priv *priv, struct stm32mp_ddr_config *config);
+
 #endif /* STM32MP1_DDR_H */
diff --git a/include/drivers/st/stm32mp1_ddr_regs.h b/include/drivers/st/stm32mp1_ddr_regs.h
index 01d663834..2fbe1c8a5 100644
--- a/include/drivers/st/stm32mp1_ddr_regs.h
+++ b/include/drivers/st/stm32mp1_ddr_regs.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
  */
@@ -7,140 +7,11 @@
 #ifndef STM32MP1_DDR_REGS_H
 #define STM32MP1_DDR_REGS_H
 
+#include <drivers/st/stm32mp_ddrctrl_regs.h>
 #include <lib/utils_def.h>
 
-/* DDR3/LPDDR2/LPDDR3 Controller (DDRCTRL) registers */
-struct stm32mp1_ddrctl {
-	uint32_t mstr ;		/* 0x0 Master */
-	uint32_t stat;		/* 0x4 Operating Mode Status */
-	uint8_t reserved008[0x10 - 0x8];
-	uint32_t mrctrl0;	/* 0x10 Control 0 */
-	uint32_t mrctrl1;	/* 0x14 Control 1 */
-	uint32_t mrstat;	/* 0x18 Status */
-	uint32_t reserved01c;	/* 0x1c */
-	uint32_t derateen;	/* 0x20 Temperature Derate Enable */
-	uint32_t derateint;	/* 0x24 Temperature Derate Interval */
-	uint8_t reserved028[0x30 - 0x28];
-	uint32_t pwrctl;	/* 0x30 Low Power Control */
-	uint32_t pwrtmg;	/* 0x34 Low Power Timing */
-	uint32_t hwlpctl;	/* 0x38 Hardware Low Power Control */
-	uint8_t reserved03c[0x50 - 0x3C];
-	uint32_t rfshctl0;	/* 0x50 Refresh Control 0 */
-	uint32_t reserved054;	/* 0x54 Refresh Control 1 */
-	uint32_t reserved058;	/* 0x58 Refresh Control 2 */
-	uint32_t reserved05C;
-	uint32_t rfshctl3;	/* 0x60 Refresh Control 0 */
-	uint32_t rfshtmg;	/* 0x64 Refresh Timing */
-	uint8_t reserved068[0xc0 - 0x68];
-	uint32_t crcparctl0;		/* 0xc0 CRC Parity Control0 */
-	uint32_t reserved0c4;	/* 0xc4 CRC Parity Control1 */
-	uint32_t reserved0c8;	/* 0xc8 CRC Parity Control2 */
-	uint32_t crcparstat;		/* 0xcc CRC Parity Status */
-	uint32_t init0;		/* 0xd0 SDRAM Initialization 0 */
-	uint32_t init1;		/* 0xd4 SDRAM Initialization 1 */
-	uint32_t init2;		/* 0xd8 SDRAM Initialization 2 */
-	uint32_t init3;		/* 0xdc SDRAM Initialization 3 */
-	uint32_t init4;		/* 0xe0 SDRAM Initialization 4 */
-	uint32_t init5;		/* 0xe4 SDRAM Initialization 5 */
-	uint32_t reserved0e8;
-	uint32_t reserved0ec;
-	uint32_t dimmctl;	/* 0xf0 DIMM Control */
-	uint8_t reserved0f4[0x100 - 0xf4];
-	uint32_t dramtmg0;	/* 0x100 SDRAM Timing 0 */
-	uint32_t dramtmg1;	/* 0x104 SDRAM Timing 1 */
-	uint32_t dramtmg2;	/* 0x108 SDRAM Timing 2 */
-	uint32_t dramtmg3;	/* 0x10c SDRAM Timing 3 */
-	uint32_t dramtmg4;	/* 0x110 SDRAM Timing 4 */
-	uint32_t dramtmg5;	/* 0x114 SDRAM Timing 5 */
-	uint32_t dramtmg6;	/* 0x118 SDRAM Timing 6 */
-	uint32_t dramtmg7;	/* 0x11c SDRAM Timing 7 */
-	uint32_t dramtmg8;	/* 0x120 SDRAM Timing 8 */
-	uint8_t reserved124[0x138 - 0x124];
-	uint32_t dramtmg14;	/* 0x138 SDRAM Timing 14 */
-	uint32_t dramtmg15;	/* 0x13C SDRAM Timing 15 */
-	uint8_t reserved140[0x180 - 0x140];
-	uint32_t zqctl0;	/* 0x180 ZQ Control 0 */
-	uint32_t zqctl1;	/* 0x184 ZQ Control 1 */
-	uint32_t zqctl2;	/* 0x188 ZQ Control 2 */
-	uint32_t zqstat;	/* 0x18c ZQ Status */
-	uint32_t dfitmg0;	/* 0x190 DFI Timing 0 */
-	uint32_t dfitmg1;	/* 0x194 DFI Timing 1 */
-	uint32_t dfilpcfg0;	/* 0x198 DFI Low Power Configuration 0 */
-	uint32_t reserved19c;
-	uint32_t dfiupd0;	/* 0x1a0 DFI Update 0 */
-	uint32_t dfiupd1;	/* 0x1a4 DFI Update 1 */
-	uint32_t dfiupd2;	/* 0x1a8 DFI Update 2 */
-	uint32_t reserved1ac;
-	uint32_t dfimisc;	/* 0x1b0 DFI Miscellaneous Control */
-	uint8_t reserved1b4[0x1bc - 0x1b4];
-	uint32_t dfistat;	/* 0x1bc DFI Miscellaneous Control */
-	uint8_t reserved1c0[0x1c4 - 0x1c0];
-	uint32_t dfiphymstr;	/* 0x1c4 DFI PHY Master interface */
-	uint8_t reserved1c8[0x204 - 0x1c8];
-	uint32_t addrmap1;	/* 0x204 Address Map 1 */
-	uint32_t addrmap2;	/* 0x208 Address Map 2 */
-	uint32_t addrmap3;	/* 0x20c Address Map 3 */
-	uint32_t addrmap4;	/* 0x210 Address Map 4 */
-	uint32_t addrmap5;	/* 0x214 Address Map 5 */
-	uint32_t addrmap6;	/* 0x218 Address Map 6 */
-	uint8_t reserved21c[0x224 - 0x21c];
-	uint32_t addrmap9;	/* 0x224 Address Map 9 */
-	uint32_t addrmap10;	/* 0x228 Address Map 10 */
-	uint32_t addrmap11;	/* 0x22C Address Map 11 */
-	uint8_t reserved230[0x240 - 0x230];
-	uint32_t odtcfg;	/* 0x240 ODT Configuration */
-	uint32_t odtmap;	/* 0x244 ODT/Rank Map */
-	uint8_t reserved248[0x250 - 0x248];
-	uint32_t sched;		/* 0x250 Scheduler Control */
-	uint32_t sched1;	/* 0x254 Scheduler Control 1 */
-	uint32_t reserved258;
-	uint32_t perfhpr1;	/* 0x25c High Priority Read CAM 1 */
-	uint32_t reserved260;
-	uint32_t perflpr1;	/* 0x264 Low Priority Read CAM 1 */
-	uint32_t reserved268;
-	uint32_t perfwr1;	/* 0x26c Write CAM 1 */
-	uint8_t reserved27c[0x300 - 0x270];
-	uint32_t dbg0;		/* 0x300 Debug 0 */
-	uint32_t dbg1;		/* 0x304 Debug 1 */
-	uint32_t dbgcam;	/* 0x308 CAM Debug */
-	uint32_t dbgcmd;	/* 0x30c Command Debug */
-	uint32_t dbgstat;	/* 0x310 Status Debug */
-	uint8_t reserved314[0x320 - 0x314];
-	uint32_t swctl;		/* 0x320 Software Programming Control Enable */
-	uint32_t swstat;	/* 0x324 Software Programming Control Status */
-	uint8_t reserved328[0x36c - 0x328];
-	uint32_t poisoncfg;	/* 0x36c AXI Poison Configuration Register */
-	uint32_t poisonstat;	/* 0x370 AXI Poison Status Register */
-	uint8_t reserved374[0x3fc - 0x374];
-
-	/* Multi Port registers */
-	uint32_t pstat;		/* 0x3fc Port Status */
-	uint32_t pccfg;		/* 0x400 Port Common Configuration */
-
-	/* PORT 0 */
-	uint32_t pcfgr_0;	/* 0x404 Configuration Read */
-	uint32_t pcfgw_0;	/* 0x408 Configuration Write */
-	uint8_t reserved40c[0x490 - 0x40c];
-	uint32_t pctrl_0;	/* 0x490 Port Control Register */
-	uint32_t pcfgqos0_0;	/* 0x494 Read QoS Configuration 0 */
-	uint32_t pcfgqos1_0;	/* 0x498 Read QoS Configuration 1 */
-	uint32_t pcfgwqos0_0;	/* 0x49c Write QoS Configuration 0 */
-	uint32_t pcfgwqos1_0;	/* 0x4a0 Write QoS Configuration 1 */
-	uint8_t reserved4a4[0x4b4 - 0x4a4];
-
-	/* PORT 1 */
-	uint32_t pcfgr_1;	/* 0x4b4 Configuration Read */
-	uint32_t pcfgw_1;	/* 0x4b8 Configuration Write */
-	uint8_t reserved4bc[0x540 - 0x4bc];
-	uint32_t pctrl_1;	/* 0x540 Port 2 Control Register */
-	uint32_t pcfgqos0_1;	/* 0x544 Read QoS Configuration 0 */
-	uint32_t pcfgqos1_1;	/* 0x548 Read QoS Configuration 1 */
-	uint32_t pcfgwqos0_1;	/* 0x54c Write QoS Configuration 0 */
-	uint32_t pcfgwqos1_1;	/* 0x550 Write QoS Configuration 1 */
-} __packed;
-
 /* DDR Physical Interface Control (DDRPHYC) registers*/
-struct stm32mp1_ddrphy {
+struct stm32mp_ddrphy {
 	uint32_t ridr;		/* 0x00 R Revision Identification */
 	uint32_t pir;		/* 0x04 R/W PHY Initialization */
 	uint32_t pgcr;		/* 0x08 R/W PHY General Configuration */
@@ -214,6 +85,7 @@ struct stm32mp1_ddrphy {
 	uint32_t dx1dqtr;	/* 0x210 Byte lane 1 DQ Timing */
 	uint32_t dx1dqstr;	/* 0x214 Byte lane 1 QS Timing */
 	uint8_t res6[0x240 - 0x218];	/* 0x218 */
+#if STM32MP_DDR_32BIT_INTERFACE
 	uint32_t dx2gcr;	/* 0x240 Byte lane 2 General Configuration */
 	uint32_t dx2gsr0;	/* 0x244 Byte lane 2 General Status 0 */
 	uint32_t dx2gsr1;	/* 0x248 Byte lane 2 General Status 1 */
@@ -227,103 +99,9 @@ struct stm32mp1_ddrphy {
 	uint32_t dx3dllcr;	/* 0x28c Byte lane 3 DLL Control */
 	uint32_t dx3dqtr;	/* 0x290 Byte lane 3 DQ Timing */
 	uint32_t dx3dqstr;	/* 0x294 Byte lane 3 QS Timing */
+#endif
 } __packed;
 
-/* DDR Controller registers offsets */
-#define DDRCTRL_MSTR				0x000
-#define DDRCTRL_STAT				0x004
-#define DDRCTRL_MRCTRL0				0x010
-#define DDRCTRL_MRSTAT				0x018
-#define DDRCTRL_PWRCTL				0x030
-#define DDRCTRL_PWRTMG				0x034
-#define DDRCTRL_HWLPCTL				0x038
-#define DDRCTRL_RFSHCTL3			0x060
-#define DDRCTRL_RFSHTMG				0x064
-#define DDRCTRL_INIT0				0x0D0
-#define DDRCTRL_DFIMISC				0x1B0
-#define DDRCTRL_DBG1				0x304
-#define DDRCTRL_DBGCAM				0x308
-#define DDRCTRL_DBGCMD				0x30C
-#define DDRCTRL_DBGSTAT				0x310
-#define DDRCTRL_SWCTL				0x320
-#define DDRCTRL_SWSTAT				0x324
-#define DDRCTRL_PSTAT				0x3FC
-#define DDRCTRL_PCTRL_0				0x490
-#define DDRCTRL_PCTRL_1				0x540
-
-/* DDR Controller Register fields */
-#define DDRCTRL_MSTR_DDR3			BIT(0)
-#define DDRCTRL_MSTR_LPDDR2			BIT(2)
-#define DDRCTRL_MSTR_LPDDR3			BIT(3)
-#define DDRCTRL_MSTR_DATA_BUS_WIDTH_MASK	GENMASK(13, 12)
-#define DDRCTRL_MSTR_DATA_BUS_WIDTH_FULL	0
-#define DDRCTRL_MSTR_DATA_BUS_WIDTH_HALF	BIT(12)
-#define DDRCTRL_MSTR_DATA_BUS_WIDTH_QUARTER	BIT(13)
-#define DDRCTRL_MSTR_DLL_OFF_MODE		BIT(15)
-
-#define DDRCTRL_STAT_OPERATING_MODE_MASK	GENMASK(2, 0)
-#define DDRCTRL_STAT_OPERATING_MODE_NORMAL	BIT(0)
-#define DDRCTRL_STAT_OPERATING_MODE_SR		(BIT(0) | BIT(1))
-#define DDRCTRL_STAT_SELFREF_TYPE_MASK		GENMASK(5, 4)
-#define DDRCTRL_STAT_SELFREF_TYPE_ASR		(BIT(4) | BIT(5))
-#define DDRCTRL_STAT_SELFREF_TYPE_SR		BIT(5)
-
-#define DDRCTRL_MRCTRL0_MR_TYPE_WRITE		U(0)
-/* Only one rank supported */
-#define DDRCTRL_MRCTRL0_MR_RANK_SHIFT		4
-#define DDRCTRL_MRCTRL0_MR_RANK_ALL \
-					BIT(DDRCTRL_MRCTRL0_MR_RANK_SHIFT)
-#define DDRCTRL_MRCTRL0_MR_ADDR_SHIFT		12
-#define DDRCTRL_MRCTRL0_MR_ADDR_MASK		GENMASK(15, 12)
-#define DDRCTRL_MRCTRL0_MR_WR			BIT(31)
-
-#define DDRCTRL_MRSTAT_MR_WR_BUSY		BIT(0)
-
-#define DDRCTRL_PWRCTL_SELFREF_EN		BIT(0)
-#define DDRCTRL_PWRCTL_POWERDOWN_EN		BIT(1)
-#define DDRCTRL_PWRCTL_EN_DFI_DRAM_CLK_DISABLE	BIT(3)
-#define DDRCTRL_PWRCTL_SELFREF_SW		BIT(5)
-
-#define DDRCTRL_PWRTMG_SELFREF_TO_X32_MASK	GENMASK(23, 16)
-#define DDRCTRL_PWRTMG_SELFREF_TO_X32_0		BIT(16)
-
-#define DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH	BIT(0)
-
-#define DDRCTRL_HWLPCTL_HW_LP_EN		BIT(0)
-
-#define DDRCTRL_RFSHTMG_T_RFC_NOM_X1_X32_MASK	GENMASK(27, 16)
-#define DDRCTRL_RFSHTMG_T_RFC_NOM_X1_X32_SHIFT	16
-
-#define DDRCTRL_INIT0_SKIP_DRAM_INIT_MASK	GENMASK(31, 30)
-#define DDRCTRL_INIT0_SKIP_DRAM_INIT_NORMAL	BIT(30)
-
-#define DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN	BIT(0)
-
-#define DDRCTRL_DBG1_DIS_HIF			BIT(1)
-
-#define DDRCTRL_DBGCAM_WR_DATA_PIPELINE_EMPTY	BIT(29)
-#define DDRCTRL_DBGCAM_RD_DATA_PIPELINE_EMPTY	BIT(28)
-#define DDRCTRL_DBGCAM_DBG_WR_Q_EMPTY		BIT(26)
-#define DDRCTRL_DBGCAM_DBG_LPR_Q_DEPTH		GENMASK(12, 8)
-#define DDRCTRL_DBGCAM_DBG_HPR_Q_DEPTH		GENMASK(4, 0)
-#define DDRCTRL_DBGCAM_DATA_PIPELINE_EMPTY \
-		(DDRCTRL_DBGCAM_WR_DATA_PIPELINE_EMPTY | \
-		 DDRCTRL_DBGCAM_RD_DATA_PIPELINE_EMPTY)
-#define DDRCTRL_DBGCAM_DBG_Q_DEPTH \
-		(DDRCTRL_DBGCAM_DBG_WR_Q_EMPTY | \
-		 DDRCTRL_DBGCAM_DBG_LPR_Q_DEPTH | \
-		 DDRCTRL_DBGCAM_DBG_HPR_Q_DEPTH)
-
-#define DDRCTRL_DBGCMD_RANK0_REFRESH		BIT(0)
-
-#define DDRCTRL_DBGSTAT_RANK0_REFRESH_BUSY	BIT(0)
-
-#define DDRCTRL_SWCTL_SW_DONE			BIT(0)
-
-#define DDRCTRL_SWSTAT_SW_DONE_ACK		BIT(0)
-
-#define DDRCTRL_PCTRL_N_PORT_EN			BIT(0)
-
 /* DDR PHY registers offsets */
 #define DDRPHYC_PIR				0x004
 #define DDRPHYC_PGCR				0x008
@@ -339,10 +117,12 @@ struct stm32mp1_ddrphy {
 #define DDRPHYC_DX0DLLCR			0x1CC
 #define DDRPHYC_DX1GCR				0x200
 #define DDRPHYC_DX1DLLCR			0x20C
+#if STM32MP_DDR_32BIT_INTERFACE
 #define DDRPHYC_DX2GCR				0x240
 #define DDRPHYC_DX2DLLCR			0x24C
 #define DDRPHYC_DX3GCR				0x280
 #define DDRPHYC_DX3DLLCR			0x28C
+#endif
 
 /* DDR PHY Register fields */
 #define DDRPHYC_PIR_INIT			BIT(0)
@@ -353,6 +133,7 @@ struct stm32mp1_ddrphy {
 #define DDRPHYC_PIR_DRAMRST			BIT(5)
 #define DDRPHYC_PIR_DRAMINIT			BIT(6)
 #define DDRPHYC_PIR_QSTRN			BIT(7)
+#define DDRPHYC_PIR_RVTRN			BIT(8)
 #define DDRPHYC_PIR_ICPC			BIT(16)
 #define DDRPHYC_PIR_ZCALBYP			BIT(30)
 #define DDRPHYC_PIR_INITSTEPS_MASK		GENMASK(31, 7)
diff --git a/include/drivers/st/stm32mp_ddr.h b/include/drivers/st/stm32mp_ddr.h
new file mode 100644
index 000000000..1efca42a1
--- /dev/null
+++ b/include/drivers/st/stm32mp_ddr.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+ */
+
+#ifndef STM32MP_DDR_H
+#define STM32MP_DDR_H
+
+#include <platform_def.h>
+
+enum stm32mp_ddr_base_type {
+	DDR_BASE,
+	DDRPHY_BASE,
+	NONE_BASE
+};
+
+enum stm32mp_ddr_reg_type {
+	REG_REG,
+	REG_TIMING,
+	REG_PERF,
+	REG_MAP,
+	REGPHY_REG,
+	REGPHY_TIMING,
+	REG_TYPE_NB
+};
+
+struct stm32mp_ddr_reg_desc {
+	const char *name;
+	uint16_t offset;	/* Offset for base address */
+	uint8_t par_offset;	/* Offset for parameter array */
+};
+
+struct stm32mp_ddr_reg_info {
+	const char *name;
+	const struct stm32mp_ddr_reg_desc *desc;
+	uint8_t size;
+	enum stm32mp_ddr_base_type base;
+};
+
+struct stm32mp_ddr_size {
+	uint64_t base;
+	uint64_t size;
+};
+
+struct stm32mp_ddr_priv {
+	struct stm32mp_ddr_size info;
+	struct stm32mp_ddrctl *ctl;
+	struct stm32mp_ddrphy *phy;
+	uintptr_t pwr;
+	uintptr_t rcc;
+};
+
+struct stm32mp_ddr_info {
+	const char *name;
+	uint32_t speed; /* in kHZ */
+	uint32_t size;  /* Memory size in byte = col * row * width */
+};
+
+#define TIMEOUT_US_1S	1000000U
+
+void stm32mp_ddr_set_reg(const struct stm32mp_ddr_priv *priv, enum stm32mp_ddr_reg_type type,
+			 const void *param, const struct stm32mp_ddr_reg_info *ddr_registers);
+void stm32mp_ddr_start_sw_done(struct stm32mp_ddrctl *ctl);
+void stm32mp_ddr_wait_sw_done_ack(struct stm32mp_ddrctl *ctl);
+void stm32mp_ddr_enable_axi_port(struct stm32mp_ddrctl *ctl);
+int stm32mp_board_ddr_power_init(enum ddr_type ddr_type);
+
+#endif /* STM32MP_DDR_H */
diff --git a/include/drivers/st/stm32mp_ddr_test.h b/include/drivers/st/stm32mp_ddr_test.h
new file mode 100644
index 000000000..34e522ae3
--- /dev/null
+++ b/include/drivers/st/stm32mp_ddr_test.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STM32MP_DDR_TEST_H
+#define STM32MP_DDR_TEST_H
+
+#include <stdint.h>
+
+uint32_t stm32mp_ddr_test_rw_access(void);
+uint32_t stm32mp_ddr_test_data_bus(void);
+uint32_t stm32mp_ddr_test_addr_bus(uint64_t size);
+uint32_t stm32mp_ddr_check_size(void);
+
+#endif /* STM32MP_DDR_TEST_H */
diff --git a/include/drivers/st/stm32mp_ddrctrl_regs.h b/include/drivers/st/stm32mp_ddrctrl_regs.h
new file mode 100644
index 000000000..79de86b2a
--- /dev/null
+++ b/include/drivers/st/stm32mp_ddrctrl_regs.h
@@ -0,0 +1,265 @@
+/*
+ * Copyright (c) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+ */
+
+#ifndef STM32MP_DDRCTRL_REGS_H
+#define STM32MP_DDRCTRL_REGS_H
+
+#include <cdefs.h>
+#include <stdint.h>
+
+#include <lib/utils_def.h>
+
+/* DDR Controller (DDRCTRL) registers */
+struct stm32mp_ddrctl {
+	uint32_t mstr ;		/* 0x0 Master */
+	uint32_t stat;		/* 0x4 Operating Mode Status */
+	uint8_t reserved008[0x10 - 0x8];
+	uint32_t mrctrl0;	/* 0x10 Control 0 */
+	uint32_t mrctrl1;	/* 0x14 Control 1 */
+	uint32_t mrstat;	/* 0x18 Status */
+	uint32_t mrctrl2;	/* 0x1c Control 2 */
+	uint32_t derateen;	/* 0x20 Temperature Derate Enable */
+	uint32_t derateint;	/* 0x24 Temperature Derate Interval */
+	uint32_t reserved028;
+	uint32_t deratectl;	/* 0x2c Temperature Derate Control */
+	uint32_t pwrctl;	/* 0x30 Low Power Control */
+	uint32_t pwrtmg;	/* 0x34 Low Power Timing */
+	uint32_t hwlpctl;	/* 0x38 Hardware Low Power Control */
+	uint8_t reserved03c[0x50 - 0x3c];
+	uint32_t rfshctl0;	/* 0x50 Refresh Control 0 */
+	uint32_t rfshctl1;	/* 0x54 Refresh Control 1 */
+	uint32_t reserved058;	/* 0x58 Refresh Control 2 */
+	uint32_t reserved05C;
+	uint32_t rfshctl3;	/* 0x60 Refresh Control 0 */
+	uint32_t rfshtmg;	/* 0x64 Refresh Timing */
+	uint32_t rfshtmg1;	/* 0x68 Refresh Timing 1 */
+	uint8_t reserved06c[0xc0 - 0x6c];
+	uint32_t crcparctl0;	/* 0xc0 CRC Parity Control0 */
+	uint32_t crcparctl1;	/* 0xc4 CRC Parity Control1 */
+	uint32_t reserved0c8;	/* 0xc8 CRC Parity Control2 */
+	uint32_t crcparstat;	/* 0xcc CRC Parity Status */
+	uint32_t init0;		/* 0xd0 SDRAM Initialization 0 */
+	uint32_t init1;		/* 0xd4 SDRAM Initialization 1 */
+	uint32_t init2;		/* 0xd8 SDRAM Initialization 2 */
+	uint32_t init3;		/* 0xdc SDRAM Initialization 3 */
+	uint32_t init4;		/* 0xe0 SDRAM Initialization 4 */
+	uint32_t init5;		/* 0xe4 SDRAM Initialization 5 */
+	uint32_t init6;		/* 0xe8 SDRAM Initialization 6 */
+	uint32_t init7;		/* 0xec SDRAM Initialization 7 */
+	uint32_t dimmctl;	/* 0xf0 DIMM Control */
+	uint32_t rankctl;	/* 0xf4 Rank Control */
+	uint8_t reserved0f4[0x100 - 0xf8];
+	uint32_t dramtmg0;	/* 0x100 SDRAM Timing 0 */
+	uint32_t dramtmg1;	/* 0x104 SDRAM Timing 1 */
+	uint32_t dramtmg2;	/* 0x108 SDRAM Timing 2 */
+	uint32_t dramtmg3;	/* 0x10c SDRAM Timing 3 */
+	uint32_t dramtmg4;	/* 0x110 SDRAM Timing 4 */
+	uint32_t dramtmg5;	/* 0x114 SDRAM Timing 5 */
+	uint32_t dramtmg6;	/* 0x118 SDRAM Timing 6 */
+	uint32_t dramtmg7;	/* 0x11c SDRAM Timing 7 */
+	uint32_t dramtmg8;	/* 0x120 SDRAM Timing 8 */
+	uint32_t dramtmg9;	/* 0x124 SDRAM Timing 9 */
+	uint32_t dramtmg10;	/* 0x128 SDRAM Timing 10 */
+	uint32_t dramtmg11;	/* 0x12c SDRAM Timing 11 */
+	uint32_t dramtmg12;	/* 0x130 SDRAM Timing 12 */
+	uint32_t dramtmg13;	/* 0x134 SDRAM Timing 13 */
+	uint32_t dramtmg14;	/* 0x138 SDRAM Timing 14 */
+	uint32_t dramtmg15;	/* 0x13c SDRAM Timing 15 */
+	uint8_t reserved140[0x180 - 0x140];
+	uint32_t zqctl0;	/* 0x180 ZQ Control 0 */
+	uint32_t zqctl1;	/* 0x184 ZQ Control 1 */
+	uint32_t zqctl2;	/* 0x188 ZQ Control 2 */
+	uint32_t zqstat;	/* 0x18c ZQ Status */
+	uint32_t dfitmg0;	/* 0x190 DFI Timing 0 */
+	uint32_t dfitmg1;	/* 0x194 DFI Timing 1 */
+	uint32_t dfilpcfg0;	/* 0x198 DFI Low Power Configuration 0 */
+	uint32_t dfilpcfg1;	/* 0x19c DFI Low Power Configuration 1 */
+	uint32_t dfiupd0;	/* 0x1a0 DFI Update 0 */
+	uint32_t dfiupd1;	/* 0x1a4 DFI Update 1 */
+	uint32_t dfiupd2;	/* 0x1a8 DFI Update 2 */
+	uint32_t reserved1ac;
+	uint32_t dfimisc;	/* 0x1b0 DFI Miscellaneous Control */
+	uint32_t dfitmg2;	/* 0x1b4 DFI Timing 2 */
+	uint32_t dfitmg3;	/* 0x1b8 DFI Timing 3 */
+	uint32_t dfistat;	/* 0x1bc DFI Status */
+	uint32_t dbictl;	/* 0x1c0 DM/DBI Control */
+	uint32_t dfiphymstr;	/* 0x1c4 DFI PHY Master interface */
+	uint8_t reserved1c8[0x200 - 0x1c8];
+	uint32_t addrmap0;	/* 0x200 Address Map 0 */
+	uint32_t addrmap1;	/* 0x204 Address Map 1 */
+	uint32_t addrmap2;	/* 0x208 Address Map 2 */
+	uint32_t addrmap3;	/* 0x20c Address Map 3 */
+	uint32_t addrmap4;	/* 0x210 Address Map 4 */
+	uint32_t addrmap5;	/* 0x214 Address Map 5 */
+	uint32_t addrmap6;	/* 0x218 Address Map 6 */
+	uint32_t addrmap7;	/* 0x21c Address Map 7 */
+	uint32_t addrmap8;	/* 0x220 Address Map 8 */
+	uint32_t addrmap9;	/* 0x224 Address Map 9 */
+	uint32_t addrmap10;	/* 0x228 Address Map 10 */
+	uint32_t addrmap11;	/* 0x22C Address Map 11 */
+	uint8_t reserved230[0x240 - 0x230];
+	uint32_t odtcfg;	/* 0x240 ODT Configuration */
+	uint32_t odtmap;	/* 0x244 ODT/Rank Map */
+	uint8_t reserved248[0x250 - 0x248];
+	uint32_t sched;		/* 0x250 Scheduler Control */
+	uint32_t sched1;	/* 0x254 Scheduler Control 1 */
+	uint32_t reserved258;
+	uint32_t perfhpr1;	/* 0x25c High Priority Read CAM 1 */
+	uint32_t reserved260;
+	uint32_t perflpr1;	/* 0x264 Low Priority Read CAM 1 */
+	uint32_t reserved268;
+	uint32_t perfwr1;	/* 0x26c Write CAM 1 */
+	uint8_t reserved27c[0x300 - 0x270];
+	uint32_t dbg0;		/* 0x300 Debug 0 */
+	uint32_t dbg1;		/* 0x304 Debug 1 */
+	uint32_t dbgcam;	/* 0x308 CAM Debug */
+	uint32_t dbgcmd;	/* 0x30c Command Debug */
+	uint32_t dbgstat;	/* 0x310 Status Debug */
+	uint8_t reserved314[0x320 - 0x314];
+	uint32_t swctl;		/* 0x320 Software Programming Control Enable */
+	uint32_t swstat;	/* 0x324 Software Programming Control Status */
+	uint8_t reserved328[0x36c - 0x328];
+	uint32_t poisoncfg;	/* 0x36c AXI Poison Configuration Register */
+	uint32_t poisonstat;	/* 0x370 AXI Poison Status Register */
+	uint8_t reserved374[0x3f0 - 0x374];
+	uint32_t deratestat;	/* 0x3f0 Temperature Derate Status */
+	uint8_t reserved3f4[0x3fc - 0x3f4];
+
+	/* Multi Port registers */
+	uint32_t pstat;		/* 0x3fc Port Status */
+	uint32_t pccfg;		/* 0x400 Port Common Configuration */
+
+	/* PORT 0 */
+	uint32_t pcfgr_0;	/* 0x404 Configuration Read */
+	uint32_t pcfgw_0;	/* 0x408 Configuration Write */
+	uint8_t reserved40c[0x490 - 0x40c];
+	uint32_t pctrl_0;	/* 0x490 Port Control Register */
+	uint32_t pcfgqos0_0;	/* 0x494 Read QoS Configuration 0 */
+	uint32_t pcfgqos1_0;	/* 0x498 Read QoS Configuration 1 */
+	uint32_t pcfgwqos0_0;	/* 0x49c Write QoS Configuration 0 */
+	uint32_t pcfgwqos1_0;	/* 0x4a0 Write QoS Configuration 1 */
+	uint8_t reserved4a4[0x4b4 - 0x4a4];
+
+#if STM32MP_DDR_DUAL_AXI_PORT
+	/* PORT 1 */
+	uint32_t pcfgr_1;	/* 0x4b4 Configuration Read */
+	uint32_t pcfgw_1;	/* 0x4b8 Configuration Write */
+	uint8_t reserved4bc[0x540 - 0x4bc];
+	uint32_t pctrl_1;	/* 0x540 Port 2 Control Register */
+	uint32_t pcfgqos0_1;	/* 0x544 Read QoS Configuration 0 */
+	uint32_t pcfgqos1_1;	/* 0x548 Read QoS Configuration 1 */
+	uint32_t pcfgwqos0_1;	/* 0x54c Write QoS Configuration 0 */
+	uint32_t pcfgwqos1_1;	/* 0x550 Write QoS Configuration 1 */
+#endif
+
+	uint8_t reserved554[0xff0 - 0x554];
+	uint32_t umctl2_ver_number;	/* 0xff0 UMCTL2 Version Number */
+} __packed;
+
+/* DDR Controller registers offsets */
+#define DDRCTRL_MSTR				0x000
+#define DDRCTRL_STAT				0x004
+#define DDRCTRL_MRCTRL0				0x010
+#define DDRCTRL_MRSTAT				0x018
+#define DDRCTRL_PWRCTL				0x030
+#define DDRCTRL_PWRTMG				0x034
+#define DDRCTRL_HWLPCTL				0x038
+#define DDRCTRL_RFSHCTL3			0x060
+#define DDRCTRL_RFSHTMG				0x064
+#define DDRCTRL_INIT0				0x0D0
+#define DDRCTRL_DFIMISC				0x1B0
+#define DDRCTRL_DBG1				0x304
+#define DDRCTRL_DBGCAM				0x308
+#define DDRCTRL_DBGCMD				0x30C
+#define DDRCTRL_DBGSTAT				0x310
+#define DDRCTRL_SWCTL				0x320
+#define DDRCTRL_SWSTAT				0x324
+#define DDRCTRL_PSTAT				0x3FC
+#define DDRCTRL_PCTRL_0				0x490
+#if STM32MP_DDR_DUAL_AXI_PORT
+#define DDRCTRL_PCTRL_1				0x540
+#endif
+
+/* DDR Controller Register fields */
+#define DDRCTRL_MSTR_DDR3			BIT(0)
+#define DDRCTRL_MSTR_LPDDR2			BIT(2)
+#define DDRCTRL_MSTR_LPDDR3			BIT(3)
+#define DDRCTRL_MSTR_DDR4			BIT(4)
+#define DDRCTRL_MSTR_LPDDR4			BIT(5)
+#define DDRCTRL_MSTR_DATA_BUS_WIDTH_MASK	GENMASK(13, 12)
+#define DDRCTRL_MSTR_DATA_BUS_WIDTH_FULL	0
+#define DDRCTRL_MSTR_DATA_BUS_WIDTH_HALF	BIT(12)
+#define DDRCTRL_MSTR_DATA_BUS_WIDTH_QUARTER	BIT(13)
+#define DDRCTRL_MSTR_DLL_OFF_MODE		BIT(15)
+
+#define DDRCTRL_STAT_OPERATING_MODE_MASK	GENMASK(2, 0)
+#define DDRCTRL_STAT_OPERATING_MODE_NORMAL	BIT(0)
+#define DDRCTRL_STAT_OPERATING_MODE_SR		(BIT(0) | BIT(1))
+#define DDRCTRL_STAT_SELFREF_TYPE_MASK		GENMASK(5, 4)
+#define DDRCTRL_STAT_SELFREF_TYPE_ASR		(BIT(4) | BIT(5))
+#define DDRCTRL_STAT_SELFREF_TYPE_SR		BIT(5)
+
+#define DDRCTRL_MRCTRL0_MR_TYPE_WRITE		U(0)
+/* Only one rank supported */
+#define DDRCTRL_MRCTRL0_MR_RANK_SHIFT		4
+#define DDRCTRL_MRCTRL0_MR_RANK_ALL \
+					BIT(DDRCTRL_MRCTRL0_MR_RANK_SHIFT)
+#define DDRCTRL_MRCTRL0_MR_ADDR_SHIFT		12
+#define DDRCTRL_MRCTRL0_MR_ADDR_MASK		GENMASK(15, 12)
+#define DDRCTRL_MRCTRL0_MR_WR			BIT(31)
+
+#define DDRCTRL_MRSTAT_MR_WR_BUSY		BIT(0)
+
+#define DDRCTRL_PWRCTL_SELFREF_EN		BIT(0)
+#define DDRCTRL_PWRCTL_POWERDOWN_EN		BIT(1)
+#define DDRCTRL_PWRCTL_EN_DFI_DRAM_CLK_DISABLE	BIT(3)
+#define DDRCTRL_PWRCTL_SELFREF_SW		BIT(5)
+
+#define DDRCTRL_PWRTMG_SELFREF_TO_X32_MASK	GENMASK(23, 16)
+#define DDRCTRL_PWRTMG_SELFREF_TO_X32_0		BIT(16)
+
+#define DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH	BIT(0)
+#define DDRCTRL_RFSHCTL3_REFRESH_UPDATE_LEVEL	BIT(1)
+
+#define DDRCTRL_HWLPCTL_HW_LP_EN		BIT(0)
+
+#define DDRCTRL_RFSHTMG_T_RFC_NOM_X1_X32_MASK	GENMASK(27, 16)
+#define DDRCTRL_RFSHTMG_T_RFC_NOM_X1_X32_SHIFT	16
+
+#define DDRCTRL_INIT0_SKIP_DRAM_INIT_MASK	GENMASK(31, 30)
+#define DDRCTRL_INIT0_SKIP_DRAM_INIT_NORMAL	BIT(30)
+
+#define DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN	BIT(0)
+#define DDRCTRL_DFIMISC_DFI_INIT_START		BIT(5)
+
+#define DDRCTRL_DFISTAT_DFI_INIT_COMPLETE	BIT(0)
+
+#define DDRCTRL_DBG1_DIS_HIF			BIT(1)
+
+#define DDRCTRL_DBGCAM_WR_DATA_PIPELINE_EMPTY	BIT(29)
+#define DDRCTRL_DBGCAM_RD_DATA_PIPELINE_EMPTY	BIT(28)
+#define DDRCTRL_DBGCAM_DBG_WR_Q_EMPTY		BIT(26)
+#define DDRCTRL_DBGCAM_DBG_LPR_Q_DEPTH		GENMASK(12, 8)
+#define DDRCTRL_DBGCAM_DBG_HPR_Q_DEPTH		GENMASK(4, 0)
+#define DDRCTRL_DBGCAM_DATA_PIPELINE_EMPTY \
+		(DDRCTRL_DBGCAM_WR_DATA_PIPELINE_EMPTY | \
+		 DDRCTRL_DBGCAM_RD_DATA_PIPELINE_EMPTY)
+#define DDRCTRL_DBGCAM_DBG_Q_DEPTH \
+		(DDRCTRL_DBGCAM_DBG_WR_Q_EMPTY | \
+		 DDRCTRL_DBGCAM_DBG_LPR_Q_DEPTH | \
+		 DDRCTRL_DBGCAM_DBG_HPR_Q_DEPTH)
+
+#define DDRCTRL_DBGCMD_RANK0_REFRESH		BIT(0)
+
+#define DDRCTRL_DBGSTAT_RANK0_REFRESH_BUSY	BIT(0)
+
+#define DDRCTRL_SWCTL_SW_DONE			BIT(0)
+
+#define DDRCTRL_SWSTAT_SW_DONE_ACK		BIT(0)
+
+#define DDRCTRL_PCTRL_N_PORT_EN			BIT(0)
+
+#endif /* STM32MP_DDRCTRL_REGS_H */
diff --git a/include/drivers/st/stm32mp_ram.h b/include/drivers/st/stm32mp_ram.h
new file mode 100644
index 000000000..6e1e21d57
--- /dev/null
+++ b/include/drivers/st/stm32mp_ram.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef STM32MP_RAM_H
+#define STM32MP_RAM_H
+
+#include <stdbool.h>
+
+#include <drivers/st/stm32mp_ddr.h>
+
+#define PARAM(x, y)							\
+	{								\
+		.name = x,						\
+		.offset = offsetof(struct stm32mp_ddr_config, y),	\
+		.size = sizeof(config.y) / sizeof(uint32_t),		\
+	}
+
+#define CTL_PARAM(x) PARAM("st,ctl-"#x, c_##x)
+#define PHY_PARAM(x) PARAM("st,phy-"#x, p_##x)
+
+struct stm32mp_ddr_param {
+	const char *name;      /* Name in DT */
+	const uint32_t offset; /* Offset in config struct */
+	const uint32_t size;   /* Size of parameters */
+};
+
+int stm32mp_ddr_dt_get_info(void *fdt, int node, struct stm32mp_ddr_info *info);
+int stm32mp_ddr_dt_get_param(void *fdt, int node, const struct stm32mp_ddr_param *param,
+			     uint32_t param_size, uintptr_t config);
+
+#endif /* STM32MP_RAM_H */
diff --git a/plat/st/stm32mp1/platform.mk b/plat/st/stm32mp1/platform.mk
index cc1e0d9ab..a24a5b06c 100644
--- a/plat/st/stm32mp1/platform.mk
+++ b/plat/st/stm32mp1/platform.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -23,6 +23,10 @@ STM32_TF_VERSION	?=	0
 # Enable dynamic memory mapping
 PLAT_XLAT_TABLES_DYNAMIC :=	1
 
+# DDR controller with dual AXI port and 32-bit interface
+STM32MP_DDR_DUAL_AXI_PORT:=	1
+STM32MP_DDR_32BIT_INTERFACE:=	1
+
 ifeq ($(AARCH32_SP),sp_min)
 # Disable Neon support: sp_min runtime may conflict with non-secure world
 TF_CFLAGS		+=	-mfloat-abi=soft
@@ -127,6 +131,8 @@ endif
 $(eval $(call assert_booleans,\
 	$(sort \
 		PLAT_XLAT_TABLES_DYNAMIC \
+		STM32MP_DDR_32BIT_INTERFACE \
+		STM32MP_DDR_DUAL_AXI_PORT \
 		STM32MP_EMMC \
 		STM32MP_EMMC_BOOT \
 		STM32MP_RAW_NAND \
@@ -151,6 +157,8 @@ $(eval $(call add_defines,\
 		PLAT_XLAT_TABLES_DYNAMIC \
 		STM32_TF_A_COPIES \
 		STM32_TF_VERSION \
+		STM32MP_DDR_32BIT_INTERFACE \
+		STM32MP_DDR_DUAL_AXI_PORT \
 		STM32MP_EMMC \
 		STM32MP_EMMC_BOOT \
 		STM32MP_RAW_NAND \
@@ -195,6 +203,7 @@ PLAT_BL_COMMON_SOURCES	+=	drivers/arm/tzc/tzc400.c				\
 				drivers/st/bsec/bsec.c					\
 				drivers/st/clk/stm32mp_clkfunc.c			\
 				drivers/st/clk/stm32mp1_clk.c				\
+				drivers/st/ddr/stm32mp_ddr.c				\
 				drivers/st/ddr/stm32mp1_ddr_helpers.c			\
 				drivers/st/gpio/stm32_gpio.c				\
 				drivers/st/i2c/stm32_i2c.c				\
@@ -288,7 +297,9 @@ BL2_SOURCES		+=	drivers/st/usb/stm32mp1_usb.c				\
 				plat/st/stm32mp1/stm32mp1_usb_dfu.c
 endif
 
-BL2_SOURCES		+=	drivers/st/ddr/stm32mp1_ddr.c				\
+BL2_SOURCES		+=	drivers/st/ddr/stm32mp_ddr_test.c			\
+				drivers/st/ddr/stm32mp_ram.c				\
+				drivers/st/ddr/stm32mp1_ddr.c				\
 				drivers/st/ddr/stm32mp1_ram.c
 
 BL2_SOURCES		+=	common/desc_image_load.c				\
diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index b43245f64..95274696b 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -472,6 +472,7 @@ static inline uint32_t tamp_bkpr(uint32_t idx)
  * Device Tree defines
  ******************************************************************************/
 #define DT_BSEC_COMPAT			"st,stm32mp15-bsec"
+#define DT_DDR_COMPAT			"st,stm32mp1-ddr"
 #define DT_IWDG_COMPAT			"st,stm32mp1-iwdg"
 #define DT_PWR_COMPAT			"st,stm32mp1,pwr-reg"
 #define DT_RCC_CLK_COMPAT		"st,stm32mp1-rcc"