From: Tero Kristo <t-kristo@ti.com>
To: <wim@linux-watchdog.org>, <linux@roeck-us.net>,
<linux-watchdog@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <jan.kiszka@siemens.com>
Subject: [PATCH 0/2] watchdog: rti: adjust initial ping for attach
Date: Wed, 24 Jun 2020 14:45:32 +0300 [thread overview]
Message-ID: <20200624114534.1362-1-t-kristo@ti.com> (raw)
Hi,
This series fixes attaching the RTI watchdog driver to an already
running timer; it can be started by boot loader for example. In this
case, we must read the current remaining timeout, and adjust the
min_hw_heartbeat based on that so that we don't attempt to either pet
the watchdog too early, or too late.
The reason for all this is because the K3 RTI watchdog runs in windowed
mode only, petting it either too early, or too late causes a watchdog
reset.
-Tero
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next reply other threads:[~2020-06-24 11:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-24 11:45 Tero Kristo [this message]
2020-06-24 11:45 ` [PATCH 1/2] watchdog: use __watchdog_ping in startup Tero Kristo
2020-06-30 20:36 ` Guenter Roeck
2020-06-24 11:45 ` [PATCH 2/2] watchdog: rti: tweak min_hw_heartbeat_ms to match initial allowed window Tero Kristo
2020-06-24 15:24 ` Jan Kiszka
2020-06-25 8:32 ` Tero Kristo
2020-06-25 10:00 ` Jan Kiszka
2020-06-25 13:35 ` Guenter Roeck
2020-06-25 17:04 ` Tero Kristo
2020-06-30 20:23 ` Guenter Roeck
2020-07-01 5:50 ` Tero Kristo
2020-07-01 13:34 ` Guenter Roeck
2020-07-01 14:36 ` Tero Kristo
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