drivers: watchdog: Initial support for RZ/A3UL, N2L, T2M

Add Watchdog driver support for Renesas RZ/A3UL, N2L, T2M

Signed-off-by: Quang Le <[email protected]>
Signed-off-by: Tien Nguyen <[email protected]>

Author: le-quang168

drivers/watchdog/CMakeLists.txt

@@ -63,6 +63,7 @@ zephyr_library_sources_ifdef(CONFIG_WDT_ANDES_ATCWDT200 wdt_andes_atcwdt200.c)
 zephyr_library_sources_ifdef(CONFIG_WDT_NXP_FS26 wdt_nxp_fs26.c)
 zephyr_library_sources_ifdef(CONFIG_WDT_SHELL wdt_shell.c)
 zephyr_library_sources_ifdef(CONFIG_WDT_RENESAS_RA wdt_renesas_ra.c)
+zephyr_library_sources_ifdef(CONFIG_WDT_RENESAS_RZ wdt_renesas_rz.c)
 zephyr_library_sources_ifdef(CONFIG_WDT_NXP_EWM wdt_nxp_ewm.c)
 
 zephyr_library_sources_ifdef(CONFIG_WDT_TI_RTI wdt_ti_rti.c)

drivers/watchdog/Kconfig

@@ -153,6 +153,8 @@ source "drivers/watchdog/Kconfig.rts5912"
 
 source "drivers/watchdog/Kconfig.renesas_ra"
 
+source "drivers/watchdog/Kconfig.renesas_rz"
+
 source "drivers/watchdog/Kconfig.wch"
 
 source "drivers/watchdog/Kconfig.nxp_ewm"

drivers/watchdog/Kconfig.renesas_rz

@@ -0,0 +1,22 @@
+# Copyright (c) 2025 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config WDT_RENESAS_RZ
+	bool "Watchdog Driver for Renesas RZ"
+	default y
+	depends on DT_HAS_RENESAS_RZ_WDT_ENABLED
+	select HAS_WDT_DISABLE_AT_BOOT
+	select USE_RZ_FSP_WDT
+	help
+	  Enable watchdog driver for Renesas RZ
+
+if WDT_RENESAS_RZ
+
+config WDT_RENESAS_RZ_USE_ICU
+	bool "Watchdog generates interrupt requests signal"
+	default y
+	depends on SOC_SERIES_RZT2M || SOC_SERIES_RZN2L
+	help
+	  Watchdog generates interrupt requests signal
+
+endif # WDT_RENESAS_RZ