linux-kernel - Re: [PATCH 2/3] arm64: dts: renesas: rzg2l-smarc: Add OV5645 node

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Date:   Tue, 14 Mar 2023 09:20:02 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH 2/3] arm64: dts: renesas: rzg2l-smarc: Add OV5645 node

Hi Prabhakar,

On Mon, Mar 13, 2023 at 9:54 PM Lad, Prabhakar
<prabhakar.csengg@...il.com> wrote:
> On Wed, Mar 8, 2023 at 10:59 PM Laurent Pinchart
> <laurent.pinchart@...asonboard.com> wrote:
> > On Mon, Mar 06, 2023 at 08:27:19PM +0100, Geert Uytterhoeven wrote:
> > > On Thu, Feb 16, 2023 at 6:57 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
> > > > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > > >
> > > > OV5645 sensor can be connected to the CN1 connector on the
> > > > carrier board. This patch adds the ov5645 node under i2c0 node.
> > > >
> > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > >
> > > Thanks for your patch!
> > >
> > > > --- a/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts
> > > > +++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-smarc.dts
> > > > @@ -6,6 +6,10 @@
> > > >   */
> > > >
> > > >  /dts-v1/;
> > > > +
> > > > +/* comment the #define statement if OV5645 is not connected to CN1  */
> > > > +#define CAM_INTERFACE_OV5645   1
> > >
> > > I believe the camera is optional ("can be connector" above).
> > > So shouldn't this be commented out by default?
> >
> > Even better, could you turn this into a DT overlay ?
> >
> Please let me know your thoughts on this.

I agree with Laurent.

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