diff --git a/drivers/flash/flash_stm32_ospi.c b/drivers/flash/flash_stm32_ospi.c
index 35c6c003856..8e6d671c759 100644
--- a/drivers/flash/flash_stm32_ospi.c
+++ b/drivers/flash/flash_stm32_ospi.c
@@ -31,6 +31,11 @@ LOG_MODULE_REGISTER(flash_stm32_ospi, CONFIG_FLASH_LOG_LEVEL);
 
 #define STM32_OSPI_NODE DT_INST_PARENT(0)
 
+#define DT_OSPI_IO_PORT_PROP_OR(prop, default_value)					\
+	COND_CODE_1(DT_NODE_HAS_PROP(STM32_OSPI_NODE, prop),				\
+		    (_CONCAT(HAL_OSPIM_, DT_STRING_TOKEN(STM32_OSPI_NODE, prop))),	\
+		    ((default_value)))
+
 #define STM32_OSPI_RESET_GPIO DT_INST_NODE_HAS_PROP(0, reset_gpios)
 
 #define STM32_OSPI_DLYB_BYPASSED DT_PROP(STM32_OSPI_NODE, dlyb_bypass)
@@ -2069,14 +2074,18 @@ static int flash_stm32_ospi_init(const struct device *dev)
 		ospi_mgr_cfg.ClkPort = 1;
 		ospi_mgr_cfg.DQSPort = 1;
 		ospi_mgr_cfg.NCSPort = 1;
-		ospi_mgr_cfg.IOLowPort = HAL_OSPIM_IOPORT_1_LOW;
-		ospi_mgr_cfg.IOHighPort = HAL_OSPIM_IOPORT_1_HIGH;
+		ospi_mgr_cfg.IOLowPort = DT_OSPI_IO_PORT_PROP_OR(io_low_port,
+								 HAL_OSPIM_IOPORT_1_LOW);
+		ospi_mgr_cfg.IOHighPort = DT_OSPI_IO_PORT_PROP_OR(io_high_port,
+								  HAL_OSPIM_IOPORT_1_HIGH);
 	} else if (dev_data->hospi.Instance == OCTOSPI2) {
 		ospi_mgr_cfg.ClkPort = 2;
 		ospi_mgr_cfg.DQSPort = 2;
 		ospi_mgr_cfg.NCSPort = 2;
-		ospi_mgr_cfg.IOLowPort = HAL_OSPIM_IOPORT_2_LOW;
-		ospi_mgr_cfg.IOHighPort = HAL_OSPIM_IOPORT_2_HIGH;
+		ospi_mgr_cfg.IOLowPort = DT_OSPI_IO_PORT_PROP_OR(io_low_port,
+								 HAL_OSPIM_IOPORT_2_LOW);
+		ospi_mgr_cfg.IOHighPort = DT_OSPI_IO_PORT_PROP_OR(io_high_port,
+								  HAL_OSPIM_IOPORT_2_HIGH);
 	}
 #if defined(OCTOSPIM_CR_MUXEN)
 	ospi_mgr_cfg.Req2AckTime = 1;