This commit documents the new support for "marvell,armada-{375,380}-wdt"
compatible strings and the extra 'reg' entry requirement.
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Using the added infrastructure for handling SoC differences,
this commit adds support for the watchdog controller available
in Armada 370 and Armada XP SoCs.

Also, and because the AXP clock initialization uses of_clk_get_by_name,
this commit changes the orion clock initialization to use clk_get() and
adds a proper clk_put() on the common exit/error paths.
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Tested-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NWilly Tarreau <w@1wt.eu>
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Tested-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

In order to support other SoC, it's required to distinguish
the 'control' timer register, from the 'rstout' register
that enables system reset on watchdog expiration.

To prevent a compatibility break, this commit adds a fallback
to a hardcoded RSTOUT address.
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Tested-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NWilly Tarreau <w@1wt.eu>
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Tested-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

DT-enabled plaforms, where the irqchip driver for the brigde interrupt
controller is available, can handle the watchdog IRQ properly. Therefore,
request the interrupt and add a dummy handler that merely calls panic().

This is done in order to have an initial 'ack' of the interruption,
which clears the watchdog state.

Furthermore, since some platforms don't have such IRQ, this commit
makes the interrupt specification optional.
Tested-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: NWilly Tarreau <w@1wt.eu>
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Tested-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

this patchset add the timeout-sec property to the following drivers:
orion_wdt, pnx4008_wdt, s3c2410_wdt and at91sam9_wdt.

The at91sam9_wdt is tested on evk-pr3,
the other drivers are compile tested only.
Signed-off-by: NFabio Porcedda <fabio.porcedda@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add device tree support to the Orion watchdog timer, and enable its
use in the kirkwood devices using device tree.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Acked-by: NSebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Tested-by: NSimon Baatz <gmbnomis@gmail.com>