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From:   Geert Uytterhoeven <geert@linux-m68k.org>
Date:   Mon, 19 Aug 2019 15:45:54 +0200
Message-ID: <CAMuHMdWFHDGPSZt2_H_sC9rCKDYBR0XDLn0TGxzPRxZsrOTEHw@mail.gmail.com>
Subject: Re: [PATCH v2 01/19] dt-bindings: display: renesas,cmm: Add R-Car CMM documentation
To:     Jacopo Mondi <jacopo+renesas@jmondi.org>
Cc:     Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Koji Matsuoka <koji.matsuoka.xm@renesas.com>, muroya@ksk.co.jp,
        VenkataRajesh.Kalakodima@in.bosch.com,
        Harsha.ManjulaMallikarjun@in.bosch.com,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Hi Jacopo,

On Mon, Jul 8, 2019 at 9:58 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Sat, Jul 6, 2019 at 4:07 PM Jacopo Mondi <jacopo+renesas@jmondi.org> wrote:
> > Add device tree bindings documentation for the Renesas R-Car Display
> > Unit Color Management Module.
> >
> > CMM is the image enhancement module available on each R-Car DU video
> > channel on R-Car Gen2 and Gen3 SoCs (V3H and V3M excluded).
> >
> > Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> Thanks for your patch!
>
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/renesas,cmm.txt
> > @@ -0,0 +1,25 @@
> > +* Renesas R-Car Color Management Module (CMM)
> > +
> > +Renesas R-Car image enhancement module connected to R-Car DU video channels.
> > +
> > +Required properties:
> > + - compatible: shall be one of:
> > +   - "renesas,rcar-gen3-cmm"
> > +   - "renesas,rcar-gen2-cmm"
>
> Why do you think you do not need SoC-specific compatible values?
> What if you discover a different across the R-Car Gen3 line tomorrow?
> Does the IP block have a version register?

Do you have an answer to these questions?
Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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