linux-kernel - Re: [PATCH v15 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC-IF controller bindings

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Message-ID: <OFFF9D8385.D8395BBD-ON48258446.0033FD62-48258446.00349608@mxic.com.tw>
Date:   Mon, 29 Jul 2019 17:34:22 +0800
From:   masonccyang@...c.com.tw
To:     "Geert Uytterhoeven" <geert@...ux-m68k.org>
Cc:     "Mark Brown" <broonie@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        "Simon Horman" <horms@...ge.net.au>, juliensu@...c.com.tw,
        "Lee Jones" <lee.jones@...aro.org>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        "Linux-Renesas" <linux-renesas-soc@...r.kernel.org>,
        "linux-spi" <linux-spi@...r.kernel.org>,
        "Marek Vasut" <marek.vasut@...il.com>,
        "Mark Rutland" <mark.rutland@....com>,
        "Miquel Raynal" <miquel.raynal@...tlin.com>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Sergei Shtylyov" <sergei.shtylyov@...entembedded.com>
Subject: Re: [PATCH v15 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC-IF
 controller bindings

Hi Geert,

> On Fri, Jul 26, 2019 at 4:19 AM Mason Yang <masonccyang@...c.com.tw> 
wrote:
> > Dcument the bindings used by the Renesas R-Car Gen3 RPC-IF controller.
> 
> Document

Oops, sorry !

> 
> >
> > Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> 
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> > @@ -0,0 +1,46 @@
> 
> [...]
> 
> > +- flash: should be represented by a subnode of the RPC-IF node,
> > +        which "compatible" property contains "jedec,spi-nor", it 
presents
> > +        SPI is used.
> 
> Sorry, I failed to parse the last subsentence.

Fix it to:
- flash: should be represented by a subnode of the RPC-IF node,
         its "compatible" property contains "jedec,spi-nor" presents
         SPI is used.

OK?

> 
> > +
> > +Example:
> > +
> > +       rpc: spi@...00000 {
> > +               compatible = "renesas,r8a77995-rpc", 
"renesas,rcar-gen3-rpc";
> > +               reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 
0x4000000>,
> > +                     <0 0xee208000 0 0x100>;
> > +               reg-names = "regs", "dirmap", "wbuf";
> > +               clocks = <&cpg CPG_MOD 917>;
> > +               clock-names = "rpc";
> > +               power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
> > +               resets = <&cpg 917>;
> > +               #address-cells = <1>;
> > +               #size-cells = <0>;
> > +
> > +               flash@0 {
> > +                       compatible = "jedec,spi-nor";
> > +                       reg = <0>;
> > +                       spi-max-frequency = <40000000>;
> > +                       spi-tx-bus-width = <1>;
> > +                       spi-rx-bus-width = <1>;
> 
> Shouldn't those <1> be <4>, as this is QSPI?

okay, fix them to <4>

thanks for your time & review.

best regards,
Mason

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