linux.git/Documentation/watchdog, branch v4.18

watchdog: remove bfin_wdt driver

2018-03-26T13:57:04+00:00

The blackfin architecture is getting removed, so this driver has
become obsolete.

Acked-by: Guenter Roeck 
Acked-by: Aaron Wu 
Signed-off-by: Arnd Bergmann

documentation: watchdog: remove documentation of w83697hf_wdt/w83697ug_wdt

2018-02-03T10:09:54+00:00

Since w83697hf_wdt/w83697ug_wdt watchdogs drivers were removed
in commit 7285fae9345e ("watchdog: Remove drivers for W83697HF and W83697UG")
There are no need to keep their documentation

Signed-off-by: Corentin Labbe 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

documentation: watchdog: remove documentation for ixp2000

2018-02-03T10:09:53+00:00

The ixp2000 watchdog driver was removed in commit 065e8238302b ("watchdog: remove ixp2000 driver")

No need to keep its documentation, so remove it.

Signed-off-by: Corentin Labbe 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

documentation: watchdog: remove documentation of at32ap700x_wdt

2018-02-03T10:09:53+00:00

Since at32ap700x_wdt is gone, no need to keep its documentation

Signed-off-by: Corentin Labbe 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

Documentation: fix selftests related file refs

2017-10-19T18:58:21+00:00

Make refs to selftests files valid including:
  - watchdog-test.c
  - dnotify_test.c

Signed-off-by: Tom Saeger 
Signed-off-by: Jonathan Corbet

watchdog: Revert "iTCO_wdt: all versions count down twice"

2017-09-09T15:41:24+00:00

This reverts commit 1fccb73011ea8a5fa0c6d357c33fa29c695139ea.
Reported as Bug 196509 - iTCO_wdt regression reboot before timeout expire

Signed-off-by: Wim Van Sebroeck

watchdog: uniphier: add UniPhier watchdog driver

2017-07-03T11:58:55+00:00

Add a watchdog driver for Socionext UniPhier series SoC.
Note that the timeout value for this device must be a power
of 2 because of the specification.

Signed-off-by: Keiji Hayashibara 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

iTCO_wdt: all versions count down twice

2017-05-19T08:42:11+00:00

The ICH9 is listed as having TCO v2, and indeed the behavior in the
datasheet corresponds to v2 (for example the NO_REBOOT flag is
accessible via the 16KiB-aligned Root Complex Base Address).

However, the TCO counts twice just like in v1; the documentation
of the SECOND_TO_STS bit says: "ICH9 sets this bit to 1 to indicate
that the TIMEOUT bit had been (or is currently) set and a second
timeout occurred before the TCO_RLD register was written. If this
bit is set and the NO_REBOOT config bit is 0, then the ICH9 will
reboot the system after the second timeout.  The same can be found
in the BayTrail (Atom E3800) datasheet, and even HOWTOs around
the Internet say that it will reboot after _twice_ the specified
heartbeat.

I did not find the Apollo Lake datasheet, but because v4/v5 has
a SECOND_TO_STS bit just like the previous version I'm enabling
this for Apollo Lake as well.

Cc: linux-watchdog@vger.kernel.org
Reviewed-by: Andy Shevchenko 
Signed-off-by: Paolo Bonzini 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Introduce watchdog_stop_on_unregister helper

2017-02-24T22:00:23+00:00

Many watchdog drivers explicitly stop the watchdog when unregistering it.
While it is unclear if this is actually needed (the whatdog should not be
running at that time if it can be stopped), introduce a helper to
explicitly stop the watchdog in the watchdog core when unregistering it.
This helps reducing driver code size while retaining functionality.

Signed-off-by: Guenter Roeck

watchdog: nic7018_wdt: Add NIC7018 watchdog driver

2017-02-24T22:00:23+00:00

Add support for the watchdog timer on PXI Embedded Controller.

Signed-off-by: Hui Chun Ong 
Reviewed-by: Guenter Roeck 
Signed-off-by: Guenter Roeck