drivers: sdhc: Support SDHC driver for STM32.

This commit introduces support for the SDHC driver on STM32, enabling
functionality APIs for SDHC host controllers.

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

Author: ExaltZephyr

drivers/sdhc/CMakeLists.txt

@@ -16,4 +16,5 @@ zephyr_library_sources_ifdef(CONFIG_SDHC_RENESAS_RA sdhc_renesas_ra.c)
 zephyr_library_sources_ifdef(CONFIG_SDHC_MAX32 sdhc_max32.c)
 zephyr_library_sources_ifdef(CONFIG_SDHC_AMBIQ sdhc_ambiq.c)
 zephyr_library_sources_ifdef(CONFIG_XLNX_SDHC xlnx_sdhc.c)
+zephyr_library_sources_ifdef(CONFIG_SDHC_STM32_SDIO sdhc_stm32.c)
 endif()

drivers/sdhc/Kconfig

@@ -21,6 +21,7 @@ source "drivers/sdhc/Kconfig.renesas_ra"
 source "drivers/sdhc/Kconfig.max32"
 source "drivers/sdhc/Kconfig.ambiq"
 source "drivers/sdhc/Kconfig.xlnx"
+source "drivers/sdhc/Kconfig.stm32"
 
 config SDHC_INIT_PRIORITY
 	int "SDHC driver init priority"

drivers/sdhc/Kconfig.stm32

@@ -0,0 +1,23 @@
+# Copyright (c) 2025 EXALT Technologies.
+# SPDX-License-Identifier: Apache-2.0
+
+source "subsys/logging/Kconfig.template.log_config"
+
+config SDHC_STM32_SDIO
+	bool "STM32 SDMMC driver support for SDIO"
+	depends on DT_HAS_ST_STM32_SDIO_ENABLED
+	select USE_STM32_HAL_SDIO
+	select USE_STM32_LL_SDMMC
+	select SDHC_SUPPORTS_NATIVE_MODE
+	imply CACHE_MANAGEMENT if !SDHC_STM32_POLLING_SUPPORT && DCACHE
+	default y
+	help
+	  Enable support for SDMMC on STM32 platforms.
+
+config SDHC_BUFFER_ALIGNMENT
+	default 32
+
+config SDHC_STM32_POLLING_SUPPORT
+	bool "STM32 SDHC Polling driver support"
+	help
+	  Enables support for SDHC Polling mode on STM32 microcontrollers.