linux-kernel - RE: [PATCH v6 1/2] drivers: watchdog: add a driver to support SAMA5D4 watchdog timer

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Date:	Fri, 28 Aug 2015 01:30:51 +0000
From:	"Yang, Wenyou" <Wenyou.Yang@...el.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	"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



> -----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?

Best Regards,
Wenyou Yang