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Message-ID: <20210330223358.GA821638@robh.at.kernel.org>
Date: Tue, 30 Mar 2021 17:33:58 -0500
From: Rob Herring <robh@...nel.org>
To: Dmitry Osipenko <digetx@...il.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org
Subject: Re: [PATCH v1 5/6] dt-bindings: memory: tegra20: emc: Convert to
schema
On Tue, Mar 30, 2021 at 06:56:44PM +0300, Dmitry Osipenko wrote:
> 30.03.2021 18:29, Dmitry Osipenko пишет:
> > 30.03.2021 11:48, Krzysztof Kozlowski пишет:
> >>> + power-domains:
> >>> + $ref: /schemas/types.yaml#/definitions/phandle
> >>> + description:
> >>> + Phandle of the SoC "core" power domain.
> >> I think the core checks the type, so you only need to limit max items.
> >>
> >
> > It's a bit confusing that both variants work and it's not apparent what
> > variant is better.
Soon '$ref' won't work. I have a pending meta-schema change to catch
this. It takes some time because I have to fix all the existing cases in
tree and wait a cycle so I'm not breaking everyone.
> >
> > I actually used the max items limit initially and then changed it to
> > $ref phandle because it appeared to me that it's a better choice. I'll
> > switch back to the limit in v2, thanks.
> >
>
> Although, I'm still not sure what is the best variant. Could you please
> clarify why maxItems is better?
>
> Seems the $ref phandle already limits domain items to 1. So I don't
> understand what's the difference.
It would not work with '<&domain 1>' as 'phandle' doesn't accept any
arg cells. While you may know you don't have any cells, technically
that's provider dependent and outside the scope of this binding.
Rob
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