drivers: mspi: Support MSPI driver for STM32

This commit introduces support for the mspi and ospi drivers on STM32,
enabling functionality APIs for MSPI/OSPI host controllers..

Signed-off-by: Sara Touqan <[email protected]>
Signed-off-by: Sarah Younis <[email protected]>
Signed-off-by: Mohammad Odeh <[email protected]>

Author: ExaltZephyr

drivers/mspi/CMakeLists.txt

@@ -8,3 +8,6 @@ zephyr_library_sources_ifdef(CONFIG_MSPI_AMBIQ_AP5   mspi_ambiq_ap5.c)
 zephyr_library_sources_ifdef(CONFIG_MSPI_AMBIQ_TIMING_SCAN mspi_ambiq_timing_scan.c)
 zephyr_library_sources_ifdef(CONFIG_MSPI_DW          mspi_dw.c)
 zephyr_library_sources_ifdef(CONFIG_MSPI_EMUL        mspi_emul.c)
+zephyr_library_sources_ifdef(CONFIG_MSPI_STM32       mspi_stm32.c)
+zephyr_library_sources_ifdef(CONFIG_OSPI_STM32       ospi_stm32.c)
+zephyr_library_sources_ifdef(CONFIG_MSPI_STM32_QSPI  mspi_stm32_qspi.c)

drivers/mspi/Kconfig

@@ -62,5 +62,6 @@ source "subsys/logging/Kconfig.template.log_config"
 source "drivers/mspi/Kconfig.ambiq"
 source "drivers/mspi/Kconfig.dw"
 source "drivers/mspi/Kconfig.mspi_emul"
+source "drivers/mspi/Kconfig.stm32"
 
 endif # MSPI

drivers/mspi/Kconfig.stm32

@@ -0,0 +1,50 @@
+# STM32 MSPI flash driver configuration options
+
+# Copyright (c) 2025 STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+config MSPI_STM32
+	bool "STM32 XSPI Controller driver"
+	depends on DT_HAS_ST_STM32_MSPI_CONTROLLER_ENABLED
+	select USE_STM32_HAL_XSPI
+	select USE_STM32_LL_DLYB
+	select DMA
+	select USE_STM32_HAL_DMA
+	select USE_STM32_HAL_DMA_EX
+	imply MSPI_XIP
+	default y
+	help
+	  Enable driver for STM32 family of processors.
+
+config MSPI_STM32_QSPI
+	bool "STM32 QSPI Controller driver"
+	default y
+	depends on DT_HAS_ST_STM32_QSPI_CONTROLLER_ENABLED
+	select USE_STM32_HAL_QSPI
+	select USE_STM32_HAL_MDMA
+	imply MSPI_XIP
+	help
+	  Enable QSPI driver for STM32 family of processors.
+
+#DT_STM32_OCTOSPI_HAS_DMA := $(dt_compat_any_has_prop,$(DT_COMPAT_ST_STM32_OSPI),dmas)
+
+config OSPI_STM32
+	bool "STM32 OSPI Controller driver"
+	default y
+	depends on DT_HAS_ST_STM32_OSPI_CONTROLLER_ENABLED
+	select USE_STM32_HAL_OSPI if !SOC_SERIES_STM32H5X
+	select USE_STM32_LL_DLYB if (SOC_SERIES_STM32H5X || SOC_SERIES_STM32U5X)
+	select USE_STM32_HAL_MDMA if SOC_SERIES_STM32H7X
+	select DMA 
+	select USE_STM32_HAL_DMA 
+	select USE_STM32_HAL_DMA_EX 
+	help
+	  Enable OSPI driver for STM32 family of processors.
+
+config MSPI_BUFFER_ALIGNMENT
+	int
+	default 32
+	help
+	  Some MSPI host controllers require alignment of their data buffers
+	  in order for DMA to work correctly. This represents the alignment
+	  of buffers required in bytes.