drivers: flash: Add flash driver support for RX with flash type 1

- Add support for flash driver on RX with flash type 1
- Add bindings for flash driver on RX

Signed-off-by: Quy Tran <[email protected]>

Author: quytranpzz

drivers/flash/CMakeLists.txt

@@ -62,6 +62,7 @@ zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_NRF_MRAMC soc_flash_nrf_mramc.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_NRF_RRAM soc_flash_nrf_rram.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_NUMAKER soc_flash_numaker.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_NUMAKER_RMC soc_flash_numaker_rmc.c)
+zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_RENESAS_RX soc_flash_renesas_rx.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_RTS5912 flash_realtek_rts5912.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_RV32M1 soc_flash_rv32m1.c)
 zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_SAM flash_sam.c)

drivers/flash/Kconfig

@@ -195,6 +195,7 @@ source "drivers/flash/Kconfig.numaker_rmc"
 source "drivers/flash/Kconfig.nxp_s32"
 source "drivers/flash/Kconfig.renesas_ra"
 source "drivers/flash/Kconfig.renesas_ra_ospi"
+source "drivers/flash/Kconfig.renesas_rx"
 source "drivers/flash/Kconfig.rpi_pico"
 source "drivers/flash/Kconfig.rts5912"
 source "drivers/flash/Kconfig.rv32m1"

drivers/flash/Kconfig.renesas_rx

@@ -0,0 +1,37 @@
+# Renesas RX Family
+
+# Copyright (c) 2025 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_FLASH_RENESAS_RX
+	bool "RX flash driver"
+	depends on DT_HAS_RENESAS_RX_FLASH_ENABLED
+	default y
+	select FLASH_HAS_DRIVER_ENABLED
+	select FLASH_PAGE_LAYOUT
+	select FLASH_HAS_PAGE_LAYOUT
+	select FLASH_HAS_EXPLICIT_ERASE
+	select USE_RX_RDP_FLASH
+	help
+	  Flash driver for RX series
+
+if SOC_FLASH_RENESAS_RX
+
+config FLASH_RENESAS_RX_BGO_ENABLED
+	bool "RX flash BGO feature"
+	default $(dt_nodelabel_bool_prop,data_flash,bgo-enable)
+	help
+	  Renesas RX flash BGO (Background Operation) feature
+	  for RX series. This feature allows the flash driver to
+	  perform background operations, such as erase and write,
+	  while the CPU is executing other tasks. This only applies
+	  to the data flash region.
+
+config RX_FLASH_TYPE1
+	bool
+	depends on SOC_SERIES_RX130
+	default y
+	help
+	  RX flash driver type 1
+
+endif