Use the bark interrupt as the pretimeout notifier if available.
The pretimeout notification shall occur at timeout-sec/2.

Wang Qing (2):
  watchdog: mtk: support pre-timeout when the bark irq is available
  doc: mtk-wdt: support pre-timeout when the bark irq is available

 .../devicetree/bindings/watchdog/mtk-wdt.txt       |  5 ++
 drivers/watchdog/mtk_wdt.c                         | 76 ++++++++++++++++++++--
 2 files changed, 76 insertions(+), 5 deletions(-)

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2.7.4