[0/2] GPIO WDT "start-at-boot" property

Message

Francesco Zanella April 21, 2021, 4:26 p.m. UTC

I propose to add a new property to GPIO WDT device tree binding
"start-at-boot".
If this property is present, start pinging hw watchdog at probe, in order
to take advantage of kernel configs:
- WATCHDOG_HANDLE_BOOT_ENABLED: Avoid possible reboot if hw watchdog was
  been enabled before the kernel (by uboot for example) and userspace
  doesn't take control of /dev/watchdog in time;
- WATCHDOG_OPEN_TIMEOUT: Reboot if userspace doesn't take control of
  /dev/watchdog within the timeout.

Francesco Zanella (2):
  dt-bindings: watchdog: gpio-wdt: add "start-at-boot"
  watchdog: gpio_wdt: add "start-at-boot" feature

 Documentation/devicetree/bindings/watchdog/gpio-wdt.txt | 7 +++++++
 drivers/watchdog/gpio_wdt.c                             | 6 +++++-
 2 files changed, 12 insertions(+), 1 deletion(-)