linux-kernel - Re: [PATCH 1/6] dt-bindings: interrupt-controller: apple,aic: Add apple,aic2 support

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Date:   Sat, 11 Dec 2021 21:28:10 +0900
From:   Hector Martin <marcan@...can.st>
To:     Rob Herring <robh@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>, Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/6] dt-bindings: interrupt-controller: apple,aic: Add
 apple,aic2 support

On 10/12/2021 02.28, Rob Herring wrote:
> On Thu, Dec 09, 2021 at 01:32:44PM +0900, Hector Martin wrote:
<snip>
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - apple,aic2
>> +    then:
>> +      required:
>> +        - apple,event-reg
> 
> Is this property valid for aic1? If not, you need:
> 
> else:
>    not:
>      required:
>        - apple,event-reg
> 

Thanks, I wasn't sure how to do this. Took me a second to realize how 
the logic works here, heh.

> 
> I tend to think you should just make this a separate document. There's
> not a whole lot of sharing (compared to any other interrupt controller).

Good point. I just kind of defaulted to this way because the driver is 
the same (and does share a bunch), but indeed the binding doesn't really 
reflect any of that. I'll split it off into another document for v2. 
Might as well make the 4-argument interrupt form mandatory then (we use 
it for all DTs, even the current 1-die machines, on AICv2 SoCs; the 
driver can handle both but we might as well be stricter with the binding).

-- 
Hector Martin (marcan@...can.st)
Public Key: https://mrcn.st/pub