This series addresses the two watchdog drivers used on STM32MPxx family platforms.
On the generic watchdog framework, it adds a new method wdt_set_force_autostart() used by the watchdog drivers to force the autostart status of the watchdog. This is used when the driver detects that the watchdog has already been started by a previous boot stage (e.g. HW, bootrom, Secure OS, ...) and needs to be kicked by U-Boot regardless of the autostart flag set in DT or in config. On the driver arm_smc_wdt, it adds the API to query the Secure OS about the state of the watchdog, and if at probe the watchdog is already started it invokes wdt_set_force_autostart(). On the driver stm32mp_wdt, it adds the code to detect the state of the watchdog, and if at probe the watchdog is already started it invokes wdt_set_force_autostart(). At last, since all the watchdog drivers used on STM32MPxx family platforms can query the status of the watchdog and use it consequently, set WATCHDOG_AUTOSTART default to 'n' on such platforms. This implies that U-Boot, by default, will respect the status of the watchdog set by a previous boot stage. Antonio Borneo (2): watchdog: wdt-uclass.c: add wdt_set_force_autostart() helper watchdog: arm_smc_wdt: get wdt status through SMCWD_GET_TIMELEFT Clément Le Goffic (1): watchdog: stm32mp: check the watchdog status Patrice Chotard (1): watchdog: don't autostart watchdog on STM32MP boards drivers/watchdog/Kconfig | 1 + drivers/watchdog/arm_smc_wdt.c | 17 +++++++++++++++++ drivers/watchdog/stm32mp_wdt.c | 33 +++++++++++++++++++++++++++++++++ drivers/watchdog/wdt-uclass.c | 9 +++++++++ include/wdt.h | 9 +++++++++ 5 files changed, 69 insertions(+) base-commit: 0bc9b288fab3d9d143066db71299a4c047be38b9 -- 2.34.1
