[PATCH v2 0/4] watchdog for STM32MP family

[Stefan Roese]

On 23.05.25 11:46, Antonio Borneo wrote:
> 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(+)

Applied to u-boot-watchdog/master

Thanks,
Stefan