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. For backward compatibility on platforms using SPL, still let U-Boot to autostart the watchdog. V1 ==> V2 - Fix backward compatibility on defconfig based on SPL - Fix inconsistency in the commit message - Rebase on current branch next 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 architecture ...stm32mp15-icore-stm32mp1-ctouch2_defconfig | 1 + ...tm32mp15-icore-stm32mp1-edimm2.2_defconfig | 1 + ...-microgea-stm32mp1-microdev2-of7_defconfig | 1 + ...mp15-microgea-stm32mp1-microdev2_defconfig | 1 + configs/stm32mp15_basic_defconfig | 1 + configs/stm32mp15_dhsom.config | 1 + 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 +++++ 11 files changed, 75 insertions(+) base-commit: ef305ceff9c875a7c16fdffc5e120d8ddf6243b7 -- 2.34.1
