[PATCH v2 0/4] watchdog for STM32MP family

[Antonio Borneo]

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