linux-stable.git/Documentation/watchdog, branch linux-4.7.y

Documentation: Add ebc-c384_wdt watchdog-parameters.txt entry

2016-05-14T16:28:29+00:00

The WinSystems EBC-C384 watchdog timer driver supports two module
parameters: timeout and nowayout. These parameters should be documented
in the watchdog-parameters.txt file.

Signed-off-by: William Breathitt Gray 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: hpwdt: Adjust documentation to match latest kernel module parameters.

2016-05-14T07:40:36+00:00

Adjust documentation to match latest kernel module parameters.

Signed-off-by: Nigel Croxon 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

Merge git://www.linux-watchdog.org/linux-watchdog

2016-03-20T02:35:51+00:00

Pull watchdog updates from Wim Van Sebroeck:

 - new drivers for: NI 903x/913x watchdog driver, WinSystems EBC-C384
   watchdog timer and ARM SBSA watchdog driver

 - Support for NCT6102D devices

 - Improvements of the generic watchdog framework (improve restart
   handler, make set_timeout optional, introduce infrastructure
   triggered keepalives, ...

 - improvements on the pnx4008 watchdog driver

 - several smaller fixes and improvements

* git://www.linux-watchdog.org/linux-watchdog: (28 commits)
  watchdog: Ensure that wdd is not dereferenced if NULL
  watchdog: imx2: Convert to use infrastructure triggered keepalives
  watchdog: dw_wdt: Convert to use watchdog infrastructure
  watchdog: Add support for minimum time between heartbeats
  watchdog: Make stop function optional
  watchdog: Introduce WDOG_HW_RUNNING flag
  watchdog: Introduce hardware maximum heartbeat in watchdog core
  watchdog: Make set_timeout function optional
  arm: lpc32xx: remove restart handler
  arm: lpc32xx: phy3250 remove restart hook
  watchdog: pnx4008: restart: support "cmd" from userspace
  watchdog: pnx4008: add support for soft reset
  watchdog: pnx4008: add restart handler
  watchdog: pnx4008: update logging during power-on
  watchdog: tangox_wdt: test clock rate to avoid division by 0
  watchdog: atlas7_wdt: test clock rate to avoid division by 0
  watchdog: s3c2410_wdt: Add max and min timeout values
  Watchdog: introduce ARM SBSA watchdog driver
  Documentation: add sbsa-gwdt driver documentation
  watchdog: Add watchdog timer support for the WinSystems EBC-C384
  ...

watchdog: Add support for minimum time between heartbeats

2016-03-16T20:11:19+00:00

Some watchdogs require a minimum time between heartbeats.
Examples are the watchdogs in DA9062 and AT91SAM9x.

Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Make stop function optional

2016-03-16T20:11:16+00:00

Not all hardware watchdogs can be stopped. The driver for
such watchdogs would typically only set the WATCHDOG_HW_RUNNING
flag in its stop function. Make the stop function optional and set
WATCHDOG_HW_RUNNING in the watchdog core if it is not provided.

Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Introduce WDOG_HW_RUNNING flag

2016-03-16T20:11:15+00:00

The WDOG_HW_RUNNING flag is expected to be set by watchdog drivers if
the hardware watchdog is running. If the flag is set, the watchdog
subsystem will ping the watchdog even if the watchdog device is closed.

The watchdog driver stop function is now optional and may be omitted
if the watchdog can not be stopped. If stopping the watchdog is not
possible but the driver implements a stop function, it is responsible
to set the WDOG_HW_RUNNING flag in its stop function.

Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Introduce hardware maximum heartbeat in watchdog core

2016-03-16T20:11:14+00:00

Introduce an optional hardware maximum heartbeat in the watchdog core.
The hardware maximum heartbeat can be lower than the maximum timeout.

Drivers can set the maximum hardware heartbeat value in the watchdog data
structure. If the configured timeout exceeds the maximum hardware heartbeat,
the watchdog core enables a timer function to assist sending keepalive
requests to the watchdog driver.

Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Make set_timeout function optional

2016-03-16T20:11:07+00:00

For some watchdogs, the watchdog driver handles timeout changes without
explicitly setting any registers. In this situation, the watchdog driver
might only set the 'timeout' variable but do nothing else.
This can as well be handled by the infrastructure, so make the set_timeout
callback optional. If WDIOF_SETTIMEOUT is configured but the .set_timeout
callback is not available, update the timeout variable in the
infrastructure code.

Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

Documentation: add sbsa-gwdt driver documentation

2016-03-04T19:23:14+00:00

The sbsa-gwdt.txt documentation in devicetree/bindings/watchdog is for
introducing SBSA(Server Base System Architecture) Generic Watchdog
device node info into FDT.

Also add sbsa-gwdt introduction in watchdog-parameters.txt

Acked-by: Arnd Bergmann 
Acked-by: Rob Herring 
Signed-off-by: Fu Wei 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: ni903x_wdt: Add NI 903x/913x watchdog driver

2016-03-01T15:25:39+00:00

Add support for the watchdog timer on NI cRIO-903x and cDAQ-913x real-
time controllers.

Signed-off-by: Jeff Westfahl 
Signed-off-by: Kyle Roeschley 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck