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drivers: watchdog: implement Smartbond watchdog driver

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This patch adds watchdog driver for Renesas Smartbond SOCs.

Co-authored-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>

Signed-off-by: Ben Lauret <ben.lauret.wm@renesas.com>
This commit is contained in:
Ben Lauret 2022-12-12 11:26:52 +01:00 • committed by Carles Cufí
commit 70c6befa88
8 changed files with 188 additions and 1 deletions
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26
drivers/watchdog/Kconfig.smartbond Normal file
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# Smartbond watchdog driver config
# Copyright (c) 2022 Renesas Electronics Corporation and/or its affiliates
# SPDX-License-Identifier: Apache-2.0
config WDT_SMARTBOND
bool "Watchdog Driver for Smartbond family of MCUs"
default y
depends on DT_HAS_RENESAS_SMARTBOND_WATCHDOG_ENABLED
help
Enable watchdog driver for Smartbond line of MCUs
config WDT_SMARTBOND_NMI
bool "NMI pre-reset interrupt enable"
default n
depends on WDT_SMARTBOND
select RUNTIME_NMI
help
Watchdog timer generates NMI at value 0, and WDOG (SYS)
reset at <= -16. Timer can be frozen/resumed using
SET_FREEZE_REG[FRZ_WDOG]/RESET_FREEZE_REG[FRZ_WDOG].
When not set:
Watchdog timer generates a WDOG (SYS)
reset at value 0 and can not be frozen by Software.
Note that this bit can only be set to 1 by SW and
only be reset with a WDOG (SYS) reset or SW reset.