linux-kernel - Re: [PATCH] dt-bindings: mfd: cros-ec: Allow interrupts-extended property

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Date:   Wed, 6 Dec 2023 11:09:39 -0600
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Chen-Yu Tsai <wenst@...omium.org>, Lee Jones <lee@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        devicetree@...r.kernel.org, chrome-platform@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: mfd: cros-ec: Allow interrupts-extended
 property

On Fri, Dec 01, 2023 at 09:03:09AM +0100, Krzysztof Kozlowski wrote:
> On 01/12/2023 05:37, Chen-Yu Tsai wrote:
> > On Thu, Nov 30, 2023 at 4:52 PM Krzysztof Kozlowski
> > <krzysztof.kozlowski@...aro.org> wrote:
> >>
> >> On 30/11/2023 09:33, Chen-Yu Tsai wrote:
> >>> "interrupts-extended" provides a more concise way of describing external
> >>> GPIO interrupts.
> >>>
> >>> Allow using this instead of "interrupts" plus "interrupt-parent" for
> >>> cros-ec.
> >>>
> >>> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> >>> ---
> >>>  .../devicetree/bindings/mfd/google,cros-ec.yaml          | 9 ++++++++-
> >>>  1 file changed, 8 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> >>> index e1ca4f297c6d..e514eac9f4fc 100644
> >>> --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> >>> +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml
> >>> @@ -75,6 +75,9 @@ properties:
> >>>    interrupts:
> >>>      maxItems: 1
> >>>
> >>> +  interrupts-extended:
> >>> +    maxItems: 1
> >>> +
> >>
> >> I don't understand why you need it. You already have interrupts there,
> >> so this is redundant. I suggest to drop the patch or provide real
> >> rationale (which I doubt you can get :) ).
> > 
> > I'm sorry, I should've included this in the commit message.
> > 
> > The other half of the patch gets rid of a DT validation fail when
> > interrupts-extended is used instead of interrupts:
> > 
> > .../arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dtb: ec@0:
> > 'interrupts' is a required property
> >     from schema $id: http://devicetree.org/schemas/mfd/google,cros-ec.yaml#
> > 
> 
> That looks either like a bug in bindings or in dtschema or in your DTS.
> This patch should not be needed to solve that.

I'll be commiting a dtschema fix soon. There's quite a few places 
needing the fixup.

Rob