drivers: flash: stm32 ospi driver size and address of the external NOR

New property of the st,stm32-ospi-nor compatible gives
the external NOR flash in bits.
The property of the st,stm32-ospi compatible gives
the external NOR flash base address

Signed-off-by: Francois Ramu <francois.ramu@st.com>

Author: FRASTM

drivers/flash/flash_stm32_ospi.c

@@ -39,8 +39,8 @@ LOG_MODULE_REGISTER(flash_stm32_ospi, CONFIG_FLASH_LOG_LEVEL);
 #define DT_OSPI_PROP_OR(prop, default_value) \
 	DT_PROP_OR(STM32_OSPI_NODE, prop, default_value)
 
-/* Get the base address of the flash from the DTS node */
-#define STM32_OSPI_BASE_ADDRESS DT_INST_REG_ADDR(0)
+/* Get the base address of the flash from the DTS st,stm32-ospi node */
+#define STM32_OSPI_BASE_ADDRESS DT_REG_ADDR_BY_IDX(STM32_OSPI_NODE, 1)
 
 #define STM32_OSPI_RESET_GPIO DT_INST_NODE_HAS_PROP(0, reset_gpios)
 
@@ -2658,7 +2658,7 @@ static const struct flash_stm32_ospi_config flash_stm32_ospi_cfg = {
 		       .enr = DT_CLOCKS_CELL_BY_NAME(STM32_OSPI_NODE, ospi_mgr, bits)},
 #endif
 	.irq_config = flash_stm32_ospi_irq_config_func,
-	.flash_size = DT_INST_REG_SIZE(0),
+	.flash_size = DT_INST_PROP(0, size) / 8, /* In Bytes */
 	.max_frequency = DT_INST_PROP(0, ospi_max_frequency),
 	.data_mode = DT_INST_PROP(0, spi_bus_width), /* SPI or OPI */
 	.data_rate = DT_INST_PROP(0, data_rate), /* DTR or STR */