linux-kernel - Re: [PATCH] ARM: dts: r8a7743: Add missing compatible strings for iic3 node

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Message-ID: <CAMuHMdXG_hpb==xY88vCEguc-n8kg_4vjv_Xmmh5jEGr37BPKA@mail.gmail.com>
Date:   Mon, 27 Apr 2020 21:59:31 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Lad Prabhakar <prabhakar.csengg@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: r8a7743: Add missing compatible strings for
 iic3 node

Hi Prabhakar,

On Mon, Apr 27, 2020 at 6:20 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@...renesas.com> wrote:
> Add missing compatible strings "renesas,rcar-gen2-iic" and
> "renesas,rmobile-iic" to iic3 node of r8a7743 SoC.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Thanks for your patch!

> --- a/arch/arm/boot/dts/r8a7743.dtsi
> +++ b/arch/arm/boot/dts/r8a7743.dtsi
> @@ -551,7 +551,9 @@
>                         /* doesn't need pinmux */
>                         #address-cells = <1>;
>                         #size-cells = <0>;
> -                       compatible = "renesas,iic-r8a7743";
> +                       compatible = "renesas,iic-r8a7743",
> +                                    "renesas,rcar-gen2-iic",
> +                                    "renesas,rmobile-iic";
>                         reg = <0 0xe60b0000 0 0x425>;
>                         interrupts = <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
>                         clocks = <&cpg CPG_MOD 926>;

This was intentional, cfr. commit 072b817589b17660 ("ARM: dts: r8a7743:
Remove generic compatible string from iic3"), and my review comments on
"[PATCH 02/22] ARM: dts: r8a7744: Add I2C and IIC support"
(https://lore.kernel.org/linux-devicetree/CAMuHMdVt2DDQJ9Ud6i=GWAeWW0TdpF5xiCxtRiv0dZTGCPEt8A@mail.gmail.com/).

The note at the bottom of Section 45.1 of the RZ/G1 Hardware User's
Manual says: "Automatic transmission for PMIC control (DVFS) is not
available ...".

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds