diff --git a/plat/st/common/include/stm32mp_dt.h b/plat/st/common/include/stm32mp_dt.h
index 74b01b3..a29d914 100644
--- a/plat/st/common/include/stm32mp_dt.h
+++ b/plat/st/common/include/stm32mp_dt.h
@@ -32,6 +32,8 @@
 				 uint32_t dflt_value);
 int fdt_read_uint32_array(int node, const char *prop_name,
 			  uint32_t *array, uint32_t count);
+int fdt_get_reg_props_by_name(int node, const char *name, uintptr_t *base,
+			      size_t *size);
 int dt_set_stdout_pinctrl(void);
 void dt_fill_device_info(struct dt_node_info *info, int node);
 int dt_get_node(struct dt_node_info *info, int offset, const char *compat);
diff --git a/plat/st/common/stm32mp_dt.c b/plat/st/common/stm32mp_dt.c
index 17da490..4fa796f 100644
--- a/plat/st/common/stm32mp_dt.c
+++ b/plat/st/common/stm32mp_dt.c
@@ -93,6 +93,46 @@
 }
 
 /*******************************************************************************
+ * This function returns the address cells from the node parent.
+ * Returns:
+ * - #address-cells value if success.
+ * - invalid value if error.
+ * - a default value if undefined #address-cells property as per libfdt
+ *   implementation.
+ ******************************************************************************/
+int fdt_get_node_parent_address_cells(int node)
+{
+	int parent;
+
+	parent = fdt_parent_offset(fdt, node);
+	if (parent < 0) {
+		return -FDT_ERR_NOTFOUND;
+	}
+
+	return fdt_address_cells(fdt, parent);
+}
+
+/*******************************************************************************
+ * This function returns the size cells from the node parent.
+ * Returns:
+ * - #size-cells value if success.
+ * - invalid value if error.
+ * - a default value if undefined #size-cells property as per libfdt
+ *   implementation.
+ ******************************************************************************/
+int fdt_get_node_parent_size_cells(int node)
+{
+	int parent;
+
+	parent = fdt_parent_offset(fdt, node);
+	if (parent < 0) {
+		return -FDT_ERR_NOTFOUND;
+	}
+
+	return fdt_size_cells(fdt, parent);
+}
+
+/*******************************************************************************
  * This function reads a value of a node property (generic use of fdt
  * library).
  * Returns value if success, and a default value if property not found.
@@ -146,6 +186,46 @@
 }
 
 /*******************************************************************************
+ * This function fills reg node info (base & size) with an index found by
+ * checking the reg-names node.
+ * Returns 0 on success and a negative FDT error code on failure.
+ ******************************************************************************/
+int fdt_get_reg_props_by_name(int node, const char *name, uintptr_t *base,
+			      size_t *size)
+{
+	const fdt32_t *cuint;
+	int index, len;
+
+	assert((fdt_get_node_parent_address_cells(node) == 1) &&
+	       (fdt_get_node_parent_size_cells(node) == 1));
+
+	index = fdt_stringlist_search(fdt, node, "reg-names", name);
+	if (index < 0) {
+		return index;
+	}
+
+	cuint = fdt_getprop(fdt, node, "reg", &len);
+	if (cuint == NULL) {
+		return -FDT_ERR_NOTFOUND;
+	}
+
+	if ((index * (int)sizeof(uint32_t)) > len) {
+		return -FDT_ERR_BADVALUE;
+	}
+
+	cuint += index << 1;
+	if (base != NULL) {
+		*base = fdt32_to_cpu(*cuint);
+	}
+	cuint++;
+	if (size != NULL) {
+		*size = fdt32_to_cpu(*cuint);
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
  * This function gets the stdout path node.
  * It reads the value indicated inside the device tree.
  * Returns node offset on success and a negative FDT error code on failure.
@@ -215,6 +295,8 @@
 {
 	const fdt32_t *cuint;
 
+	assert(fdt_get_node_parent_address_cells(node) == 1);
+
 	cuint = fdt_getprop(fdt, node, "reg", NULL);
 	if (cuint != NULL) {
 		info->base = fdt32_to_cpu(*cuint);
@@ -309,6 +391,9 @@
 		return 0;
 	}
 
+	assert((fdt_get_node_parent_address_cells(node) == 1) &&
+	       (fdt_get_node_parent_size_cells(node) == 1));
+
 	if (fdt_read_uint32_array(node, "reg", array, 4) < 0) {
 		return 0;
 	}
@@ -331,6 +416,9 @@
 		return 0;
 	}
 
+	assert((fdt_get_node_parent_address_cells(node) == 1) &&
+	       (fdt_get_node_parent_size_cells(node) == 1));
+
 	if (fdt_read_uint32_array(node, "reg", array, 4) < 0) {
 		return 0;
 	}
@@ -353,6 +441,8 @@
 		return 0;
 	}
 
+	assert(fdt_get_node_parent_address_cells(node) == 1);
+
 	cuint = fdt_getprop(fdt, node, "reg", NULL);
 	if (cuint == NULL) {
 		return 0;
@@ -415,6 +505,8 @@
 		return 0;
 	}
 
+	assert(fdt_get_node_parent_address_cells(node) == 1);
+
 	cuint = fdt_getprop(fdt, node, "reg", NULL);
 	if (cuint == NULL) {
 		return 0;