From: Jiang Lu <lu.jiang@windriver.com>
To: <linuxppc-dev@lists.ozlabs.org>
Subject: [PATCH] ppc44x/watchdog: Select WATCHDOG_NOWAYOUT option
Date: Fri, 13 Jul 2012 10:44:33 +0800 [thread overview]
Message-ID: <1342147473-20231-1-git-send-email-lu.jiang@windriver.com> (raw)
On PPC44x core, the WRC(Watchdog-timer Reset Control) field of TCR
of timer can not reset by software after set to a non-zero value.
Which means software can not reset the timeout behaviour of watchdog timer.
This patch selects WATCHDOG_NOWAYOUT option for 44x platforms to
indicate the watchdog timer can not be disabled once fired.
Signed-off-by: Jiang Lu <lu.jiang@windriver.com>
---
drivers/watchdog/Kconfig | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 3709624..41f3dff 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1084,6 +1084,7 @@ config PIKA_WDT
config BOOKE_WDT
tristate "PowerPC Book-E Watchdog Timer"
depends on BOOKE || 4xx
+ select WATCHDOG_NOWAYOUT if 44x
---help---
Watchdog driver for PowerPC Book-E chips, such as the Freescale
MPC85xx SOCs and the IBM PowerPC 440.
--
1.7.7
next reply other threads:[~2012-07-13 2:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-13 2:44 Jiang Lu [this message]
2012-07-13 11:50 ` [PATCH] ppc44x/watchdog: Select WATCHDOG_NOWAYOUT option Kumar Gala
2012-07-13 12:25 ` Josh Boyer
2012-07-13 12:52 ` Kumar Gala
2012-07-16 20:28 ` Tabi Timur-B04825
2012-07-16 20:57 ` Josh Boyer
2012-07-16 21:03 ` Timur Tabi
2012-07-16 2:07 ` Lu.Jiang
2012-07-16 14:43 ` Scott Wood
2012-07-16 20:30 ` Tabi Timur-B04825
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