linux-kernel - Re: [PATCH 1/2] watchdog: dw_wdt: pat the watchdog before enabling it

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Message-ID: <CAD=FV=WKeH2hmgsB1Hh8G6LWGqSVf_nOTCs7PVqLZV_gB_VqhA@mail.gmail.com>
Date:	Mon, 26 Jan 2015 09:01:37 -0800
From:	Doug Anderson <dianders@...omium.org>
To:	Jisheng Zhang <jszhang@...vell.com>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Wim Van Sebroeck <wim@...ana.be>,
	Heiko Stuebner <heiko@...ech.de>,
	Lunxue Dai <lunxue.dai@...k-chips.com>,
	Dinh Nguyen <dinguyen@...era.com>,
	"linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] watchdog: dw_wdt: pat the watchdog before enabling it

Jisheng,

On Sun, Jan 25, 2015 at 10:22 PM, Jisheng Zhang <jszhang@...vell.com> wrote:
>> Specifically I see the register WDT_TORR that has an offset of 0x4.
>> That's the RANGE_REG in your code.  It shows bits 3:0 set the timeout
>> period (0 = 0xffff and 15 = 0x7fffffff).  It shows bits 31:4 as
>> "reserved".
>
> Could you please dump registers' value at offset 0xf4 and 0xf8 if you don't mind?

Those are not documented in the user manual that I have, but:

>>> r(0xff8000f4)
0x10000a02
>>> r(0xff8000f8)
0x3130332a

-Doug
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