From: viresh.kumar@st•com (Viresh KUMAR)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] Watchdog: Adding support for Watchdog found with ARM CortexA9
Date: Wed, 19 May 2010 09:32:57 +0530 [thread overview]
Message-ID: <4BF362F1.5070100@st.com> (raw)
In-Reply-To: <20100518132050.GA8748@mvista.com>
On 5/18/2010 6:50 PM, George G. Davis wrote:
> Hi,
>
> On Tue, May 18, 2010 at 02:55:21PM +0530, srinidhi kasagar wrote:
>> I do not understand why a new driver is required while having similar one
>> for MPCore watchdog.
>> Please have a look at drivers/watchdog/mpcore_wdt.c
>
> The same thought occurred to me. Based on a cursory glance at the Cortex-A9
> MPCore and ARM11 MPCore, the per-CPU watchdogs do appear to be the same
> and could use the same driver.
>
> Any reason for creating a new driver rather than reusing the ARM11
> MPCore driver?
>
Sorry Guys!!! Earlier I tried to find existing driver, but couldn't found one.
So sent a new one.
I went through this driver and found some shortcomings in it:
- It looks it is not used by anyone now, as it required
asm/hardware/arm_twd.h and it was removed in v2.6.31.
So it would never compile.
- It doesn't support clock framework, and works on fixed rate.
- It works on fixed prescale value (256).
- It doesn't support WDIOC_GETBOOTSTATUS.
So, please suggest how to proceed as my patch contains all these features.
regards,
viresh kumar.
next prev parent reply other threads:[~2010-05-19 4:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 9:54 [PATCH] Watchdog: Adding support for Watchdog found with ARM CortexA9 Viresh KUMAR
2010-05-17 9:56 ` Viresh KUMAR
2010-05-17 10:44 ` Jassi Brar
2010-05-17 11:24 ` Viresh KUMAR
2010-05-18 9:25 ` srinidhi kasagar
2010-05-18 13:20 ` George G. Davis
2010-05-19 4:02 ` Viresh KUMAR [this message]
2010-05-19 5:17 ` srinidhi kasagar
2010-05-19 6:44 ` Viresh KUMAR
2010-09-22 15:36 ` mpcore_wdt A9 questions John Linn
2010-09-22 15:56 ` George G. Davis
2010-05-19 5:32 ` [PATCH] Watchdog: Adding support for Watchdog found with ARM CortexA9 Shilimkar, Santosh
2010-05-19 6:45 ` Viresh KUMAR
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