linux-kernel - Re: [PATCH v2 09/19] ARM: dts: sunxi: h3/h5: Add CSI controller port for parallel input

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Message-ID: <20201201121405.at4pwxon56ecwrx6@gilmour>
Date:   Tue, 1 Dec 2020 13:14:05 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-sunxi@...glegroups.com, Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Jonathan Corbet <corbet@....net>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Helen Koike <helen.koike@...labora.com>,
        Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        kevin.lhopital@...mail.com
Subject: Re: [PATCH v2 09/19] ARM: dts: sunxi: h3/h5: Add CSI controller port
 for parallel input

On Sat, Nov 28, 2020 at 03:28:29PM +0100, Paul Kocialkowski wrote:
> Since the CSI controller binding is getting a bit more complex due
> to the addition of MIPI CSI-2 bridge support, make the ports node
> explicit with the parallel port.
> 
> This way, it's clear that the controller only supports parallel
> interface input and there's no confusion about the port number.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> ---
>  arch/arm/boot/dts/sunxi-h3-h5.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> index 9be13378d4df..02b698cace6a 100644
> --- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> +++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> @@ -803,6 +803,15 @@ csi: camera@...0000 {
>  			pinctrl-names = "default";
>  			pinctrl-0 = <&csi_pins>;
>  			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				csi_in_parallel: port@0 {
> +					reg = <0>;
> +				};
> +			};
>  		};

This will create a DTC warning, since port@0 is the only node, and is
equivalent to port

Maxime

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