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From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Jacopo Mondi" <jacopo+renesas@jmondi.org>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Kieran Bingham" <kieran.bingham@ideasonboard.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: Re: [PATCH v4 4/7] arm64: dts: renesas: r8a77970: Add csi40 port@0
Date: Thu, 15 Apr 2021 22:09:24 +0300
Message-ID: <YHiPZCjChv2iZ4/y@pendragon.ideasonboard.com> (raw)
In-Reply-To: <CAMuHMdWXM=0W_GbJpOqCUhTKzjaYu9S81M9u=j+8KM0sFG7Atw@mail.gmail.com>

On Thu, Apr 15, 2021 at 06:47:48PM +0200, Geert Uytterhoeven wrote:
> On Thu, Apr 15, 2021 at 4:47 PM Laurent Pinchart wrote:
> > On Thu, Apr 15, 2021 at 02:25:59PM +0200, Jacopo Mondi wrote:
> > > Declare port@0 in the csi40 device node and leave it un-connected.
> > > Each board .dts file will connect the port as it requires.
> > >
> > > Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> >
> > The port exists at the hardware level, so including it here sounds good.
> > The DT binding even makes the port mandatory :-)
> 
> But the latter is subject to change?
> 
> [PATCH] media: dt-bindings: media: renesas,csi2: Node port@0 is not mandatory
> https://lore.kernel.org/linux-devicetree/20210413155346.2471776-1-niklas.soderlund+renesas@ragnatech.se/

I've replied to that patch, it's not a good idea.

> > > --- a/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> > > +++ b/arch/arm64/boot/dts/renesas/r8a77970.dtsi
> > > @@ -1106,6 +1106,10 @@ ports {
> > >                               #address-cells = <1>;
> > >                               #size-cells = <0>;
> > >
> > > +                             port@0 {
> > > +                                     reg = <0>;
> > > +                             };
> > > +
> > >                               port@1 {
> > >                                       #address-cells = <1>;
> > >                                       #size-cells = <0>;

-- 
Regards,

Laurent Pinchart

  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-15 12:25 [PATCH v4 0/7] arm64: dts: renesas: Enable GMSL on R8A77970 V3M Eagle Jacopo Mondi
2021-04-15 12:25 ` [PATCH v4 1/7] dt-bindings: media: max9286: Re-indent example Jacopo Mondi
2021-04-15 14:42   ` Laurent Pinchart
2021-04-15 16:40   ` Rob Herring
2021-04-15 12:25 ` [PATCH v4 2/7] dt-bindings: media: max9286: Define 'maxim,gpio-poc' Jacopo Mondi
2021-04-15 16:53   ` Rob Herring
2021-04-15 12:25 ` [PATCH v4 3/7] media: i2c: max9286: Use "maxim,gpio-poc" property Jacopo Mondi
2021-04-15 19:19   ` Laurent Pinchart
2021-04-18 15:01     ` Jacopo Mondi
2021-04-15 12:25 ` [PATCH v4 4/7] arm64: dts: renesas: r8a77970: Add csi40 port@0 Jacopo Mondi
2021-04-15 14:47   ` Laurent Pinchart
2021-04-15 16:47     ` Geert Uytterhoeven
2021-04-15 19:09       ` Laurent Pinchart [this message]
2021-04-15 12:26 ` [PATCH v4 5/7] arm64: dts: renesas: eagle: Enable MAX9286 Jacopo Mondi
2021-04-15 12:26 ` [PATCH v4 6/7] arm64: dts: renesas: eagle: Add GMSL .dtsi Jacopo Mondi
2021-04-15 12:26 ` [PATCH v4 7/7] DNI: arm64: dts: renesas: eagle: Include eagle-gmsl Jacopo Mondi

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