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From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: Rob Herring <robh@kernel.org>
Cc: Serge Semin <fancer.lancer@gmail.com>,
	Wim Van Sebroeck <wim@linux-watchdog.org>,
	Guenter Roeck <linux@roeck-us.net>,
	Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Paul Burton <paulburton@kernel.org>,
	Ralf Baechle <ralf@linux-mips.org>, Arnd Bergmann <arnd@arndb.de>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	<linux-mips@vger.kernel.org>, <linux-watchdog@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 3/7] dt-bindings: watchdog: dw-wdt: Add watchdog TOPs array property
Date: Tue, 19 May 2020 00:42:00 +0300
Message-ID: <20200518214200.cmkzyzzwxm4kotte@mobilestation> (raw)
In-Reply-To: <20200518204037.GA4909@bogus>

On Mon, May 18, 2020 at 02:40:37PM -0600, Rob Herring wrote:
> On Sun, May 10, 2020 at 01:58:03PM +0300, Serge Semin wrote:
> > In case if DW Watchdog IP core is built with WDT_USE_FIX_TOP == false,
> > a custom timeout periods are used to preset the timer counter. In
> > this case that periods should be specified in a new "snps,watchdog-tops"
> > property of the DW watchdog dts node.
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
> > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
> > Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> > Cc: Paul Burton <paulburton@kernel.org>
> > Cc: Ralf Baechle <ralf@linux-mips.org>
> > Cc: Arnd Bergmann <arnd@arndb.de>
> > Cc: Philipp Zabel <p.zabel@pengutronix.de>
> > Cc: linux-mips@vger.kernel.org
> > 
> > ---
> > 
> > Rob, I had to remove your Reviewed-by tag, since the patch needed
> > to be updated a bit (see changelog).
> > 
> > Changelog v2:
> > - Rearrange SoBs.
> > - Move $ref to the root level of the "snps,watchdog-tops" property
> >   so does the constraints.
> > - Add default TOP values array.
> > - Discard the label definition from the new bindings example.
> > ---
> >  .../bindings/watchdog/snps,dw-wdt.yaml        | 33 +++++++++++++++++++
> >  1 file changed, 33 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
> > index 5bf6dc6377f3..cc741fb5a685 100644
> > --- a/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
> > +++ b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
> > @@ -39,6 +39,24 @@ properties:
> >      description: Phandle to the DW Watchdog reset lane
> >      maxItems: 1
> >  
> > +  snps,watchdog-tops:
> > +    $ref: /schemas/types.yaml#/definitions/uint32-array
> > +    description: |
> > +      DW APB Watchdog custom timer intervals - Timeout Period ranges (TOPs).
> > +      Each TOP is a number loaded into the watchdog counter at the moment of
> > +      the timer restart. The counter decrementing happens each tick of the
> > +      reference clock. Therefore the TOPs array is equivalent to an array of
> > +      the timer expiration intervals supported by the DW APB Watchdog. Note
> > +      DW APB Watchdog IP-core might be synthesized with fixed TOP values,
> > +      in which case this property is unnecessary with default TOPs utilized.
> > +    default: [0x0001000 0x0002000 0x0004000 0x0008000
> > +      0x0010000 0x0020000 0x0040000 0x0080000
> > +      0x0100000 0x0200000 0x0400000 0x0800000
> > +      0x1000000 0x2000000 0x4000000 0x8000000]
> > +    items:
> > +      minItems: 16
> > +      maxItems: 16
> 
> Drop 'items' and move these up a level. That may have given you some 
> issues, but I made some fixes recently.

Ok. Thanks.

-Sergey

> 
> With that,
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> 
> Rob

  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-06 13:27 [PATCH 0/7] watchdog: dw_wdt: Take Baikal-T1 DW WDT peculiarities into account Sergey.Semin
2020-05-10 10:58 ` [PATCH v2 " Serge Semin
2020-05-10 10:58   ` [PATCH v2 1/7] dt-bindings: watchdog: Convert DW WDT binding to DT schema Serge Semin
2020-05-18 20:35     ` Rob Herring
2020-05-10 10:58   ` [PATCH v2 2/7] dt-bindings: watchdog: dw-wdt: Support devices with asynch clocks Serge Semin
2020-05-11  8:25     ` Sergei Shtylyov
2020-05-11  8:28       ` Sergei Shtylyov
2020-05-12 17:16         ` Serge Semin
2020-05-18 20:36     ` Rob Herring
2020-05-10 10:58   ` [PATCH v2 3/7] dt-bindings: watchdog: dw-wdt: Add watchdog TOPs array property Serge Semin
2020-05-18 20:40     ` Rob Herring
2020-05-18 21:42       ` Serge Semin [this message]
2020-05-10 10:58   ` [PATCH v2 4/7] watchdog: dw_wdt: Support devices with non-fixed TOP values Serge Semin
2020-05-10 10:58   ` [PATCH v2 5/7] watchdog: dw_wdt: Support devices with asynch clocks Serge Semin
2020-05-10 10:58   ` [PATCH v2 6/7] watchdog: dw_wdt: Add pre-timeouts support Serge Semin
2020-05-10 10:58   ` [PATCH v2 7/7] watchdog: dw_wdt: Add DebugFS files Serge Semin

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