diff --git a/plat/st/stm32mp1/plat_ddr.c b/plat/st/stm32mp1/plat_ddr.c
new file mode 100644
index 0000000..a6a0cdb
--- /dev/null
+++ b/plat/st/stm32mp1/plat_ddr.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2024, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+
+#include <drivers/st/regulator.h>
+#include <drivers/st/stm32mp_ddr.h>
+#include <drivers/st/stm32mp_pmic.h>
+
+/* configure the STPMIC1 regulators on STMicroelectronics boards */
+static int pmic_ddr_power_init(enum ddr_type ddr_type)
+{
+	int status;
+	uint16_t buck3_min_mv __maybe_unused;
+	struct rdev *buck2, *buck3 __maybe_unused, *vref;
+	struct rdev *ldo3 __maybe_unused;
+
+	buck2 = regulator_get_by_name("buck2");
+	if (buck2 == NULL) {
+		return -ENOENT;
+	}
+
+#if STM32MP15
+	ldo3 = regulator_get_by_name("ldo3");
+	if (ldo3 == NULL) {
+		return -ENOENT;
+	}
+#endif
+
+	vref = regulator_get_by_name("vref_ddr");
+	if (vref == NULL) {
+		return -ENOENT;
+	}
+
+	switch (ddr_type) {
+	case STM32MP_DDR3:
+#if STM32MP15
+		status = regulator_set_flag(ldo3, REGUL_SINK_SOURCE);
+		if (status != 0) {
+			return status;
+		}
+#endif
+
+		status = regulator_set_min_voltage(buck2);
+		if (status != 0) {
+			return status;
+		}
+
+		status = regulator_enable(buck2);
+		if (status != 0) {
+			return status;
+		}
+
+		status = regulator_enable(vref);
+		if (status != 0) {
+			return status;
+		}
+
+#if STM32MP15
+		status = regulator_enable(ldo3);
+		if (status != 0) {
+			return status;
+		}
+#endif
+		break;
+
+	case STM32MP_LPDDR2:
+	case STM32MP_LPDDR3:
+#if STM32MP15
+		/*
+		 * Set LDO3 to 1.8V according  BUCK3 voltage
+		 * => bypass mode if BUCK3 = 1.8V
+		 * => normal mode if BUCK3 != 1.8V
+		 */
+		buck3 = regulator_get_by_name("buck3");
+		if (buck3 == NULL) {
+			return -ENOENT;
+		}
+
+		regulator_get_range(buck3, &buck3_min_mv, NULL);
+
+		if (buck3_min_mv != 1800) {
+			status = regulator_set_min_voltage(ldo3);
+			if (status != 0) {
+				return status;
+			}
+		} else {
+			status = regulator_set_flag(ldo3, REGUL_ENABLE_BYPASS);
+			if (status != 0) {
+				return status;
+			}
+		}
+#endif
+
+		status = regulator_set_min_voltage(buck2);
+		if (status != 0) {
+			return status;
+		}
+
+#if STM32MP15
+		status = regulator_enable(ldo3);
+		if (status != 0) {
+			return status;
+		}
+#endif
+
+		status = regulator_enable(buck2);
+		if (status != 0) {
+			return status;
+		}
+
+		status = regulator_enable(vref);
+		if (status != 0) {
+			return status;
+		}
+		break;
+
+	default:
+		break;
+	};
+
+	return 0;
+}
+
+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;
+}