linux-kernel - RE: [PATCH 1/4] dt-bindings: watchdog: aspeed: Add property for WDT SW reset

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Message-ID:
 <TYZPR06MB5203FD3066CCAD07405CAAACB2442@TYZPR06MB5203.apcprd06.prod.outlook.com>
Date: Mon, 14 Oct 2024 02:07:58 +0000
From: Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>
To: Rob Herring <robh@...nel.org>
CC: "patrick@...cx.xyz" <patrick@...cx.xyz>, "wim@...ux-watchdog.org"
	<wim@...ux-watchdog.org>, "linux@...ck-us.net" <linux@...ck-us.net>,
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	<linux-arm-kernel@...ts.infradead.org>, "linux-aspeed@...ts.ozlabs.org"
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	<BMC-SW@...eedtech.com>
Subject: RE: [PATCH 1/4] dt-bindings: watchdog: aspeed: Add property for WDT
 SW reset

Hi Rob,

Thanks for the review.

> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: Tuesday, October 8, 2024 2:00 AM
> Subject: Re: [PATCH 1/4] dt-bindings: watchdog: aspeed: Add property for WDT
> SW reset
> 
> On Mon, Oct 07, 2024 at 02:34:05PM +0800, Chin-Ting Kuo wrote:
> > Add "aspeed,restart-sw" property to distinguish normal WDT reset from
> > system restart triggered by SW consciously.
> >
> > Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>
> > ---
> >  .../bindings/watchdog/aspeed,ast2400-wdt.yaml         | 11
> +++++++++++
> >  1 file changed, 11 insertions(+)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/watchdog/aspeed,ast2400-wdt.yaml
> > b/Documentation/devicetree/bindings/watchdog/aspeed,ast2400-wdt.yaml
> > index be78a9865584..6cc3604c295a 100644
> > ---
> > a/Documentation/devicetree/bindings/watchdog/aspeed,ast2400-wdt.yaml
> > +++ b/Documentation/devicetree/bindings/watchdog/aspeed,ast2400-wdt.ya
> > +++ ml
> > @@ -95,6 +95,17 @@ properties:
> >        array with the first word defined using the AST2600_WDT_RESET1_*
> macros,
> >        and the second word defined using the AST2600_WDT_RESET2_*
> macros.
> >
> > +  aspeed,restart-sw:
> > +    $ref: /schemas/types.yaml#/definitions/flag
> > +    description: >
> > +      Normally, ASPEED WDT reset may occur when system hangs or
> reboot
> > +      triggered by SW consciously. However, system doesn't know whether
> the
> > +      restart is triggered by SW consciously since the reset event flag is
> > +      the same as normal WDT timeout reset. With this property, SW can
> > +      restart the system immediately and directly without wait for WDT
> > +      timeout occurs. The reset event flag is also different from the
> normal
> > +      WDT reset. This property is only supported since AST2600 platform.
> 
> Why can't this be implicit based on the ast2600 compatible string?
> 

Yes, this property will be implicit based on the ast2600 compatible string
in the next patch series.

> Rob

Chin-Ting