From: Michael Shych <michaelsh@xxxxxxxxxxxx> Add documentation with details of new type of Mellanox watchdog driver. Signed-off-by: Michael Shych <michaelsh@xxxxxxxxxxxx> Reviewed-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx> --- Documentation/watchdog/mlx-wdt.rst | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/watchdog/mlx-wdt.rst b/Documentation/watchdog/mlx-wdt.rst index bf5bafac47f0..fa0a94e5c82e 100644 --- a/Documentation/watchdog/mlx-wdt.rst +++ b/Documentation/watchdog/mlx-wdt.rst @@ -24,10 +24,19 @@ Type 2: Maximum timeout is 255 sec. Get time-left is supported. +Type 3: + Same as Type 2 with extended maximum timeout period. + Maximum timeout is 65535 sec. + Type 1 HW watchdog implementation exist in old systems and all new systems have type 2 HW watchdog. Two types of HW implementation have also different register map. +Type 3 HW watchdog implementation can exist on all Mellanox systems +with new programmer logic device. +It's differentiated by WD capability bit. +Old systems still have only one main watchdog. + Mellanox system can have 2 watchdogs: main and auxiliary. Main and auxiliary watchdog devices can be enabled together on the same system. -- 2.11.0
