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Date:   Mon, 18 May 2020 09:58:57 +0100
From:   "Lad, Prabhakar" <>
To:     Wolfram Sang <>
Cc:     Lad Prabhakar <>,
        Geert Uytterhoeven <>,
        Jens Axboe <>, Rob Herring <>,
        Ulf Hansson <>,
        Sergei Shtylyov <>,
        "David S. Miller" <>,
        Wim Van Sebroeck <>,
        Guenter Roeck <>,,
        <>, LKML <>,,
        Linux MMC List <>,
        netdev <>,
        Linux-Renesas <>,
Subject: Re: [PATCH 03/17] ARM: dts: r8a7742: Add I2C and IIC support

Hi Wolfram,

Thank for the review.

On Fri, May 15, 2020 at 6:10 PM Wolfram Sang
<> wrote:
> On Fri, May 15, 2020 at 04:08:43PM +0100, Lad Prabhakar wrote:
> > Add the I2C[0-3] and IIC[0-3] devices nodes to the R8A7742 device tree.
> >
> > Automatic transmission for PMIC control is not available on IIC3 hence
> > compatible string "renesas,rcar-gen2-iic" and "renesas,rmobile-iic" is
> > not added to iic3 node.
> Makes sense.
> However, both versions (with and without automatic transmission) are
> described with the same "renesas,iic-r8a7742" compatible. Is it possible
> to detect the reduced variant at runtime somehow?
I couldn't find anything the manual that would be useful to detect at runtime.

> My concern is that the peculiarity of this SoC might be forgotten if we
> describe it like this and ever add "automatic transmissions" somewhen.


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