From: michaelsh@mellanox.com
To: linux@roeck-us.net, wim@linux-watchdog.org, andy@infradead.org,
dvhart@infradead.org
Cc: linux-watchdog@vger.kernel.org,
platform-driver-x86@vger.kernel.org, vadimp@mellanox.com,
Michael Shych <michaelsh@mellanox.com>
Subject: [PATCH v1 4/4] Documentation/watchdog: Add description of new watchdog type 3
Date: Thu, 16 Apr 2020 19:35:14 +0300 [thread overview]
Message-ID: <20200416163514.7334-5-michaelsh@mellanox.com> (raw)
In-Reply-To: <20200416163514.7334-1-michaelsh@mellanox.com>
From: Michael Shych <michaelsh@mellanox.com>
Add documentation with details of new type of Mellanox watchdog driver.
Signed-off-by: Michael Shych <michaelsh@mellanox.com>
Reviewed-by: Vadim Pasternak <vadimp@mellanox.com>
---
Documentation/watchdog/mlx-wdt.rst | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/watchdog/mlx-wdt.rst b/Documentation/watchdog/mlx-wdt.rst
index bf5bafac47f0..fa0a94e5c82e 100644
--- a/Documentation/watchdog/mlx-wdt.rst
+++ b/Documentation/watchdog/mlx-wdt.rst
@@ -24,10 +24,19 @@ Type 2:
Maximum timeout is 255 sec.
Get time-left is supported.
+Type 3:
+ Same as Type 2 with extended maximum timeout period.
+ Maximum timeout is 65535 sec.
+
Type 1 HW watchdog implementation exist in old systems and
all new systems have type 2 HW watchdog.
Two types of HW implementation have also different register map.
+Type 3 HW watchdog implementation can exist on all Mellanox systems
+with new programmer logic device.
+It's differentiated by WD capability bit.
+Old systems still have only one main watchdog.
+
Mellanox system can have 2 watchdogs: main and auxiliary.
Main and auxiliary watchdog devices can be enabled together
on the same system.
--
2.11.0
next prev parent reply other threads:[~2020-04-16 16:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 16:35 [PATCH v1 0/4] support watchdog with longer timeout period michaelsh
2020-04-16 16:35 ` [PATCH v1 1/4] platform_data/mlxreg: support new watchdog type " michaelsh
2020-04-16 16:35 ` [PATCH v1 2/4] platform/x86: mlx-platform: support new watchdog type with longer timeout michaelsh
2020-04-16 16:35 ` [PATCH v1 3/4] watchdog: mlx-wdt: support new watchdog type with longer timeout period michaelsh
2020-04-18 11:45 ` Guenter Roeck
2020-04-16 16:35 ` michaelsh [this message]
2020-04-18 11:46 ` [PATCH v1 4/4] Documentation/watchdog: Add description of new watchdog type 3 Guenter Roeck
2020-04-28 13:06 ` Michael Shych
2020-04-17 13:41 ` [PATCH v1 0/4] support watchdog with longer timeout period Andy Shevchenko
2020-04-20 15:52 ` Andy Shevchenko
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