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

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Message-ID: <7b9a2f1a-59d6-454c-95ed-6cb920751551@linaro.org>
Date:   Fri, 1 Dec 2023 09:03:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Chen-Yu Tsai <wenst@...omium.org>
Cc:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...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 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.


Best regards,
Krzysztof