linux-kernel - Re: [PATCH 1/2] dt-bindings: spi: renesas,sh-msiof: Add r8a7742 support

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Message-ID: <20200611085004.GC4671@sirena.org.uk>
Date:   Thu, 11 Jun 2020 09:50:04 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Prabhakar <prabhakar.csengg@...il.com>
Subject: Re: [PATCH 1/2] dt-bindings: spi: renesas,sh-msiof: Add r8a7742
 support

On Wed, Jun 10, 2020 at 09:18:19PM +0200, Geert Uytterhoeven wrote:
> On Wed, Jun 10, 2020 at 6:49 PM Mark Brown <broonie@...nel.org> wrote:

> > I'm much more comfortable explicitly listing the new compatible so that
> > even if someone makes a DT that doesn't bother listing the fallbacks
> > things will work.

> Adding all of them would cause even more churn when adding support for
> a new SoC... There are already more than 700 "renesas," compatible
> values documented that are not directly matched by drivers.

I'm not sure it's a particular concern, especially since you'll be
sending this stuff in the same series as a bindings update and an extra
patch in a series makes very little difference.

> Nowadays we have "make dtbs_check", so if a DTS doesn't conform to the
> binding, it will be flagged.

For things that are upstream.

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