diff options
| author | Michael Shych <michaelsh@mellanox.com> | 2019-02-20 09:34:23 +0000 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2019-03-02 15:28:20 +0100 |
| commit | c60923dd5feedc337b1450e3f4c6e19ffa305439 (patch) | |
| tree | dd9b5de0ffe9d4793a09281ee4c6fea0dbc893d0 /drivers/watchdog/Kconfig | |
| parent | 9f03161a1bd8cd9ccf11533e52326718c656036e (diff) | |
watchdog: mlx-wdt: introduce a watchdog driver for Mellanox systems.
Introduce watchdog driver for a various range of Mellanox Ethernet and
Infiniband switch systems.
Watchdog driver for Mellanox watchdog devices, implemented in
programmable logic device.
Main and auxiliary watchdog devices can exist on the same system.
There are several actions that can be defined in the watchdog:
system reset, start fans on full speed and increase a counter.
The last 2 actions are performed without a system reset.
Actions without reset are provided for auxiliary watchdog devices,
which is optional.
Access to HW registers is performed through generic
regmap interface.
There are 2 types of HW watchdog implementations.
Type 1: actual HW timeout can be defined as power of 2 msec.
e.g. timeout 20 sec will be rounded up to 32768 msec.;
maximum timeout period is 32 sec (32768 msec.);
get time-left isn't supported
Type 2: actual HW timeout is defined in sec. and it's the same as
user-defined timeout;
maximum timeout is 255 sec;
get time-left is supported;
Watchdog driver is probed from the common mlx_platform driver.
Signed-off-by: Michael Shych <michaelsh@mellanox.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/Kconfig')
| -rw-r--r-- | drivers/watchdog/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 846dd07e9a8a..a3fe5e988fb0 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -241,6 +241,22 @@ config RAVE_SP_WATCHDOG help Support for the watchdog on RAVE SP device. +config MLX_WDT + tristate "Mellanox Watchdog" + depends on MELLANOX_PLATFORM + select WATCHDOG_CORE + select REGMAP + help + This is the driver for the hardware watchdog on Mellanox systems. + If you are going to use it, say Y here, otherwise N. + This driver can be used together with the watchdog daemon. + It can also watch your kernel to make sure it doesn't freeze, + and if it does, it reboots your system after a certain amount of + time. + + To compile this driver as a module, choose M here: the + module will be called mlx-wdt. + # ALPHA Architecture # ARM Architecture |