Re: [PATCH v5 4/6] OMAP4: hwmod data: Add watchdog timer

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Hi Charu,

On 9/17/2010 11:23 AM, Varadarajan, Charulatha wrote:


-----Original Message-----
From: Cousson, Benoit
Sent: Thursday, September 16, 2010 2:49 AM
To: Varadarajan, Charulatha
Cc: tony@xxxxxxxxxxx; wim@xxxxxxxxx; linux-watchdog@xxxxxxxxxxxxxxx;
khilman@xxxxxxxxxxxxxxxxxxx; paul@xxxxxxxxx; Nayak, Rajendra; Basak,
Partha; linux-omap@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v5 4/6] OMAP4: hwmod data: Add watchdog timer

Hi Charu,

On 9/15/2010 7:26 AM, Varadarajan, Charulatha wrote:
From: Benoit Cousson<b-cousson@xxxxxx>

Add watchdog timer hwmod data for OMAP4 chip

Signed-off-by: Benoit Cousson<b-cousson@xxxxxx>
Signed-off-by: Charulatha V<charu@xxxxxx>
---
<<snip>>

@@ -472,6 +538,8 @@ static __initdata struct omap_hwmod
*omap44xx_hwmods[] = {

   	/* mpu class */
   	&omap44xx_mpu_hwmod,
+	/* wd_timer class */
+	&omap44xx_wd_timer2_hwmod,
   	NULL,
   };

What about the wd_timer3? It is in the audio backend, and I'm not sure
who will use it, but it does exist.

As you mentioned, wd_timer3 in OMAP4 is an IVA3 watchdog timer.

Also the current watchdog driver (omap_wdt.c) does not support more than one watchdog timer. To add this support we need to first redesign the driver code and then add wd_timer3 to the database.

This patch series is intended to make watchdog driver to use omap_hwmod APIs and PM runtime APIs. Driver modification to support more than one watchdog timers can be taken up as a separate activity later.

No necessarily, even if you do not manage this watchdog, we do need to expose its hwmod in order to allow dspbridge/syslink to potentially enable or disable it.

Maybe, it should be up to syslink people to do that then.
In that case, please add comment in the DB to explain that we do have other instances but they are not managed yet.

Thanks,
Benoit
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