drivers: spi: Add support Renesas SCI_B_SPI

drivers/spi/CMakeLists.txt

@@ -53,6 +53,7 @@ zephyr_library_sources_ifdef(CONFIG_SPI_PSOC6 spi_psoc6.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_PW spi_pw.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA spi_renesas_ra.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA8 spi_b_renesas_ra8.c)
+zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RA_SCI_B spi_renesas_ra_sci_b.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RX spi_renesas_rx.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_RENESAS_RZ_RSPI spi_renesas_rz_rspi.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_RPI_PICO_PIO spi_rpi_pico_pio.c)

drivers/spi/Kconfig.renesas_ra

@@ -1,6 +1,6 @@
 # Renesas RA Family
 
-# Copyright (c) 2024 Renesas Electronics Corporation
+# Copyright (c) 2024-2025 Renesas Electronics Corporation
 # SPDX-License-Identifier: Apache-2.0
 
 config SPI_RENESAS_RA
@@ -33,3 +33,31 @@ config SPI_USE_HW_SS
 	  Use Hardware Peripheral Select instead of Software Peripheral Select.
 
 endif # SPI_RENESAS_RA
+
+config SPI_RENESAS_RA_SCI_B
+	bool "Renesas RA SCI B SPI"
+	default y
+	depends on DT_HAS_RENESAS_RA_SPI_SCI_B_ENABLED
+	select USE_RA_FSP_SCI_B_SPI
+	select PINCTRL
+	select SPI_RENESAS_RA_SCI_B_INTERRUPT if SPI_ASYNC
+	help
+	  Enable Renesas RA SCI B SPI Driver.
+
+if SPI_RENESAS_RA_SCI_B
+
+config SPI_RENESAS_RA_SCI_B_INTERRUPT
+	bool "RENESAS RA SCI B SPI Interrupt Support"
+	depends on SPI_ASYNC
+	help
+	  Enable Interrupt support for the SCI B SPI Driver of RA family.
+
+config SPI_RENESAS_RA_SCI_B_DTC
+	bool "RA MCU SCI B SPI DTC Support"
+	default y
+	depends on SPI_RENESAS_RA_SCI_B_INTERRUPT
+	select USE_RA_FSP_DTC
+	help
+	  Enable DTC support for the SCI B SPI Driver of RA family.
+
+endif # SPI_RENESAS_RA_SCI_B