linux-kernel - Re: [PATCH v12 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF MFD bindings

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Message-ID: <CAL_JsqJDh3Z+iFn6fbkGT+jQ3HG2s4n3PT=LrmB-td++G99q_w@mail.gmail.com>
Date:   Thu, 25 Apr 2019 18:07:16 -0500
From:   Rob Herring <robh@...nel.org>
To:     Marek Vasut <marek.vasut@...il.com>
Cc:     Mason Yang <masonccyang@...c.com.tw>,
        Mark Brown <broonie@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        Boris Brezillon <bbrezillon@...nel.org>,
        "open list:MEDIA DRIVERS FOR RENESAS - FCP" 
        <linux-renesas-soc@...r.kernel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Lee Jones <lee.jones@...aro.org>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, Julien Su <juliensu@...c.com.tw>,
        Simon Horman <horms@...ge.net.au>, zhengxunli@...c.com.tw
Subject: Re: [PATCH v12 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3
 RPC-IF MFD bindings

On Wed, Apr 24, 2019 at 4:54 PM Marek Vasut <marek.vasut@...il.com> wrote:
>
> On 4/24/19 11:23 PM, Rob Herring wrote:
> > On Wed, Apr 24, 2019 at 03:55:36PM +0800, Mason Yang wrote:
> >> Document the bindings used by the Renesas R-Car Gen3 RPC-IF MFD.
> >>
> >> Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
> >> ---
> >>  .../devicetree/bindings/mfd/mfd-renesas-rpc.txt    | 40 ++++++++++++++++++++++
> >>  1 file changed, 40 insertions(+)
> >>  create mode 100644 Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt
> >>
> >> diff --git a/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt b/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt
> >> new file mode 100644
> >> index 0000000..668b822
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt
> >> @@ -0,0 +1,40 @@
> >> +Renesas R-Car Gen3 RPC-IF MFD Device Tree Bindings
> >> +--------------------------------------------------
> >
> > Looks like a SPI flash controller from the example. What makes it an
> > MFD?
>
> It supports both SPI NOR and HyperFlash (CFI-compliant flash with
> different bus interface).

Not sure that really makes it an MFD. Lee probably has an opinion.

In any case, can we get a complete binding that shows both.

Rob