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

[Guenter Roeck]

On 01/26/2015 07:44 PM, Jisheng Zhang wrote:
> Dear Doug,
>
> On Mon, 26 Jan 2015 09:01:37 -0800
> Doug Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> > Jisheng,
> >
> > On Sun, Jan 25, 2015 at 10:22 PM, Jisheng Zhang <jszhang@xxxxxxxxxxx> 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
Hi Jisheng,

This translates to ascii "103*". How does it translate to "1.02a" ?

> Thanks. Now I got some information about your platform:
>
> wdt version: v1.02a
>
> WDT_DUAL_TOP is configured as false, so there's no TOP_INIT
> WDT_DFLT_TOP is configured as 0, so it will timeout soon.
Any chance you can provide the bit map for the register reporting
those flags ?

Thanks,
Guenter

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