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Date:   Mon, 5 Nov 2018 14:36:57 -0600
From:   Rob Herring <robh@kernel.org>
To:     Doug Anderson <dianders@google.com>
Cc:     vbadigan@codeaurora.org, Adrian Hunter <adrian.hunter@intel.com>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Evan Green <evgreen@chromium.org>,
        Asutosh Das <asutoshd@codeaurora.org>, riteshh@codeaurora.org,
        stummala@codeaurora.org, sayalil@codeaurora.org,
        Mark Rutland <mark.rutland@arm.com>, linux-mmc@vger.kernel.org,
        devicetree@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V3 1/2] dt-bindings: mmc: sdhci-msm: Add new compatible
 string for SDM845 SOC
Message-ID: <20181105203657.GA32282@bogus>
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On Thu, Nov 01, 2018 at 01:29:54PM -0700, Doug Anderson wrote:
> Hi,
> 
> On Thu, Nov 1, 2018 at 5:07 AM Veerabhadrarao Badiganti
> <vbadigan@codeaurora.org> wrote:
> >
> > For SDM845 SOC, new compatible string  "qcom,sdm845-sdhci" is added.
> >
> > Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
> > ---
> >  Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > index 502b3b8..f2ffbeb 100644
> > --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > @@ -7,6 +7,7 @@ Required properties:
> >  - compatible: Should contain:
> >                 "qcom,sdhci-msm-v4" for sdcc versions less than 5.0
> >                 "qcom,sdhci-msm-v5" for sdcc versions >= 5.0
> > +               "qcom,sdm845-sdhci" for sdm845 SOC
> 
> It's up to Rob of course, but IMO it seems a nicer way forward to
> include both the SoC-specific string and the "version" string in all
> cases.  I'd write this for the full text:

Fine by me if you update all the dts files.

> 
>  - compatible: Should contain a SoC-specific string and a IP version string:
>       version strings:
>            "qcom,sdhci-msm-v4" for sdcc versions less than 5.0
>            "qcom,sdhci-msm-v5" for sdcc version 5.0
>       full compatible strings with SoC and version:
>            "qcom,apq8084", "qcom,sdhci-msm-v4"
>            "qcom,msm8974", "qcom,sdhci-msm-v4"
>            "qcom,msm8916", "qcom,sdhci-msm-v4"
>            "qcom,msm8992", "qcom,sdhci-msm-v4"
>            "qcom,msm8996", "qcom,sdhci-msm-v4"

I assume you meant to append '-sdhci' here?

>            "qcom,sdm845-sdhci", "qcom,sdhci-msm-v5"
> 
>    NOTE that some old device tree files may be floating around that only
>    have the string "qcom,sdhci-msm-v4" without the SoC compatible string
>    but doing that should be considered a deprecated practice.
> 
> -Doug