linux-kernel - [PATCH 0/2] Fixes for the SAMA5D2/SAMA5D4 watchdog

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Message-Id: <20180914101339.7382-1-romain.izard.pro@gmail.com>
Date:   Fri, 14 Sep 2018 12:13:37 +0200
From:   Romain Izard <romain.izard.pro@...il.com>
To:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Marcus Folkesson <marcus.folkesson@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        Romain Izard <romain.izard.pro@...il.com>
Subject: [PATCH 0/2] Fixes for the SAMA5D2/SAMA5D4 watchdog

A previous change of the sama5d4_wdt driver broke the device probing
with the device tree configuration described in existing DTS files,
when no value is set for the "timeout-sec" property.

Moreover, specifying any other value than 16 seconds for "timeout-sec"
leads to a watchdog reset immediately when opening the watchdog device.
Fix this by respecting hardware constraints added in recent versions of
the SAMA5D2 and SAMA5D4 datasheet.

Romain Izard (2):
  watchdog: sama5d4: fix timeout-sec usage
  watchdog: sama5d4: write the mode register in two steps

 drivers/watchdog/sama5d4_wdt.c | 33 +++++++++++++++++++++------------
 1 file changed, 21 insertions(+), 12 deletions(-)

-- 
2.17.1