linux-kernel - Re: [PATCH 1/5] dt-bindings: i2c: renesas,i2c: add r8a779a0 (V3U) support

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Message-ID: <CAMuHMdVKmb8tCGQUQtCOfkjB3VxbVtwuA3u9kh2XuxQumKhekg@mail.gmail.com>
Date:   Tue, 5 Jan 2021 13:30:40 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Linux I2C <linux-i2c@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/5] dt-bindings: i2c: renesas,i2c: add r8a779a0 (V3U) support

On Wed, Dec 23, 2020 at 6:27 PM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

> --- a/Documentation/devicetree/bindings/i2c/renesas,i2c.txt
> +++ b/Documentation/devicetree/bindings/i2c/renesas,i2c.txt
> @@ -26,6 +26,7 @@ Required properties:
>         "renesas,i2c-r8a77980" if the device is a part of a R8A77980 SoC.
>         "renesas,i2c-r8a77990" if the device is a part of a R8A77990 SoC.
>         "renesas,i2c-r8a77995" if the device is a part of a R8A77995 SoC.
> +       "renesas,i2c-r8a779a0" if the device is a part of a R8A779A0 SoC.
>         "renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device.
>         "renesas,rcar-gen2-i2c" for a generic R-Car Gen2 or RZ/G1 compatible
>                                 device.

Note that this doesn't say anything about (in)compatibility with generic
R-Car Gen3 compatible devices (hint: yaml conversion?).

New features:
  - Slave Clock Stretch Select,
  - Fast Mode+ Enable,
  - Enhanced First Bit Setup Cycle configuration.

Looks like the R-Car V3U variant can be treated as a generic R-Car Gen3
variant (lacking the new features, of course).

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