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Date:   Wed, 25 Jan 2023 15:40:27 +0000
From:   Cristian Marussi <cristian.marussi@arm.com>
To:     Sudeep Holla <sudeep.holla@arm.com>
Cc:     Rob Herring <robh@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dt-bindings: firmware: arm,scmi: Restrict protocol child
 node properties
Message-ID: <Y9FNXDLt/S3Tword@e120937-lin>
References: <20230124222023.316089-1-robh@kernel.org>
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 <20230125141113.kkbowopusikuogx6@bogus>
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On Wed, Jan 25, 2023 at 02:11:13PM +0000, Sudeep Holla wrote:
> On Wed, Jan 25, 2023 at 01:43:48PM +0000, Cristian Marussi wrote:
> > so now that the catch-all protocol@ patternProperty is gone in favour
> > of the 'protocol-node' definition and $refs, does that mean that any
> > current and future SCMI officially published protocol <N> has to be
> > added to the above explicit protocol list, even though it does not
> > have any special additional required property beside reg ?
> > (like protocol@18 above...)
> >
> 
> If there are no consumers, should we just not add and deal with it
> entirely within the kernel. I know we rely today on presence of node
> before we initialise, but hey we have exception for system power protocol
> for other reasons, why not add this one too.
> 
> In short we shouldn't have to add a node if there are no consumers. It
> was one of the topic of discussion initially when SCMI binding was added
> and they exist only for the consumers otherwise we don't need it as
> everything is discoverable from the interface.
> 

I'm fine with that, just wanted to understand/clarify the rule here.

Thanks,
Cristian