drivers: watchdog: add a DM driver for the MPC8xx watchdog
This patch adds a DM driver for the MPC8xx watchdog.
Basically, the watchdog is enabled by default from the start and
SYPCR register has to be writen once to set the timeout and/or
deactivate the watchdog. Once written, it cannot be written again.
It means that wdt_stop() can be called before wdt_start() to stop the
watchdog, but cannot be called if wdt_start() has been called.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 4a9ebb6..b6974ad 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -144,4 +144,11 @@
Select this to enable Ralink / Mediatek watchdog timer,
which can be found on some MediaTek chips.
+config WDT_MPC8xx
+ bool "MPC8xx watchdog timer support"
+ depends on WDT && MPC8xx
+ select CONFIG_MPC8xx_WATCHDOG
+ help
+ Select this to enable mpc8xx watchdog timer
+
endmenu