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Message-ID: <55DFCE34.3030508@roeck-us.net>
Date: Thu, 27 Aug 2015 19:57:56 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: "Yang, Wenyou" <Wenyou.Yang@...el.com>,
"wim@...ana.be" <wim@...ana.be>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"pawel.moll@....com" <pawel.moll@....com>,
"mark.rutland@....com" <mark.rutland@....com>,
"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
"galak@...eaurora.org" <galak@...eaurora.org>
CC: "sylvain.rochet@...secur.com" <sylvain.rochet@...secur.com>,
"Ferre, Nicolas" <Nicolas.FERRE@...el.com>,
"boris.brezillon@...e-electrons.com"
<boris.brezillon@...e-electrons.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>
Subject: Re: [PATCH v6 1/2] drivers: watchdog: add a driver to support SAMA5D4
watchdog timer
On 08/27/2015 06:30 PM, Yang, Wenyou wrote:
>
>
>> -----Original Message-----
>> From: Guenter Roeck [mailto:linux@...ck-us.net]
>> Sent: 2015年8月7日 23:26
>> To: Yang, Wenyou; wim@...ana.be; robh+dt@...nel.org; pawel.moll@....com;
>> mark.rutland@....com; ijc+devicetree@...lion.org.uk; galak@...eaurora.org
>> Cc: sylvain.rochet@...secur.com; Ferre, Nicolas; boris.brezillon@...e-
>> electrons.com; devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
>> watchdog@...r.kernel.org
>> Subject: Re: [PATCH v6 1/2] drivers: watchdog: add a driver to support SAMA5D4
>> watchdog timer
>>
>> On 08/06/2015 03:16 AM, Wenyou Yang wrote:
>>> >From SAMA5D4, the watchdog timer is upgrated with a new feature,
>>> which is describled as in the datasheet, "WDT_MR can be written until
>>> a LOCKMR command is issued in WDT_CR".
>>> That is to say, as long as the bootstrap and u-boot don't issue a
>>> LOCKMR command, WDT_MR can be written more than once in the driver.
>>>
>>> So the SAMA5D4 watchdog driver's implementation is different from the
>>> at91sam9260 watchdog driver implemented in file at91sam9_wdt.c.
>>> The user application open the device file to enable the watchdog timer
>>> hardware, and close to disable it, and set the watchdog timer timeout
>>> by seting WDV and WDD fields of WDT_MR register, and ping the watchdog
>>> by issuing WDRSTT command to WDT_CR register with hard-coded key.
>>>
>>> Signed-off-by: Wenyou Yang <wenyou.yang@...el.com>
>>
>> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>
> Hi Vim,
>
> Can this patch series be merged? Could you please?
>
It is included in the pull request I sent to Wim last week.
Guenter
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