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[ Upstream commit6ba6f0f591] On RZ/Five SoC it was observed that setting timeout (to say 1 sec) wouldn't reset the system. The procedure described in the HW manual (Procedure for Activating Modules) for activating the target module states we need to start supply of the clock module before applying the reset signal. This patch makes sure we follow the same procedure to clear the registers of the WDT module, fixing the issues seen on RZ/Five SoC. While at it re-used rzg2l_wdt_stop() in rzg2l_wdt_set_timeout() as it has the same function calls. Fixes:4055ee8100("watchdog: rzg2l_wdt: Add set_timeout callback") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20221117114907.138583-2-fabrizio.castro.jz@renesas.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.