drivers: rtc: Initial driver support for RTC on Renesas RA

Add driver support for RTC on Renesas RA

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

Author: khoatranyj

drivers/rtc/CMakeLists.txt

@@ -27,6 +27,7 @@ zephyr_library_sources_ifdef(CONFIG_RTC_NXP_IRTC rtc_nxp_irtc.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_PCF2123 rtc_pcf2123.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_PCF8523 rtc_pcf8523.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_PCF8563 rtc_pcf8563.c)
+zephyr_library_sources_ifdef(CONFIG_RTC_RENESAS_RA rtc_renesas_ra.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_RPI_PICO rtc_rpi_pico.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_RTS5912 rtc_rts5912.c)
 zephyr_library_sources_ifdef(CONFIG_RTC_RV3028 rtc_rv3028.c)

drivers/rtc/Kconfig

@@ -57,6 +57,7 @@ source "drivers/rtc/Kconfig.nxp_irtc"
 source "drivers/rtc/Kconfig.pcf2123"
 source "drivers/rtc/Kconfig.pcf8523"
 source "drivers/rtc/Kconfig.pcf8563"
+source "drivers/rtc/Kconfig.renesas_ra"
 source "drivers/rtc/Kconfig.rpi_pico"
 source "drivers/rtc/Kconfig.rts5912"
 source "drivers/rtc/Kconfig.rv3028"

drivers/rtc/Kconfig.renesas_ra

@@ -0,0 +1,12 @@
+# Renesas RA Family
+
+# Copyright (c) 2025 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config RTC_RENESAS_RA
+	bool "Renesas RA RTC"
+	default y
+	depends on DT_HAS_RENESAS_RA_RTC_ENABLED
+	select USE_RA_FSP_RTC
+	help
+	  Enable Renesas RA RTC Driver.