linux-kernel - Re: [PATCH 23/33] ARM: dts: exynos: Remove empty camera pinctrl configuration in Odroid X/U3

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Message-ID: <c9daff05-dca7-f1b1-8cfe-46b185bf60dd@samsung.com>
Date:   Mon, 31 Aug 2020 10:31:30 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Kukjin Kim <kgene@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Denis GNUtoo Carikli <GNUtoo@...erdimension.org>,
        Simon Shields <simon@...eageos.org>
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sylwester Nawrocki <snawrocki@...nel.org>
Subject: Re: [PATCH 23/33] ARM: dts: exynos: Remove empty camera pinctrl
 configuration in Odroid X/U3

Hi Krzysztof,

On 30.08.2020 15:51, Krzysztof Kozlowski wrote:
> The camera's pinctrl configuration is simply empty and not effective.
> Remove it to fix dtbs_check warning:
>
>    arch/arm/boot/dts/exynos4412-odroidx.dt.yaml: camera: pinctrl-0: True is not of type 'array'
>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

I think that this was intentional to properly enable support for 
mem-2-mem mode in Exynos4-IS (FIMC), but I'm not sure what are the 
default values if no pinctrl properties are provided. Sylwester, could 
you comment?

> ---
>   arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index a5c1ce1e396c..6d3576e21ffa 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -136,8 +136,6 @@
>   
>   &camera {
>   	status = "okay";
> -	pinctrl-names = "default";
> -	pinctrl-0 = <>;
>   };
>   
>   &clock {

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland