linux-kernel - Re: [PATCH v2 01/10] arm64: dts: mediatek: mt6779: Remove syscon compatible from pin controller

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Date:   Thu, 6 Oct 2022 11:16:05 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yassine Oudjana <yassine.oudjana@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...nel.org>,
        Andy Teng <andy.teng@...iatek.com>
Cc:     Yassine Oudjana <y.oudjana@...tonmail.com>,
        linux-mediatek@...ts.infradead.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 01/10] arm64: dts: mediatek: mt6779: Remove syscon
 compatible from pin controller

Il 05/10/22 19:43, Yassine Oudjana ha scritto:
> From: Yassine Oudjana <y.oudjana@...tonmail.com>
> 
> Remove syscon compatible string from pin controller to follow
> DT bindings and pass checks. Adding the syscon compatible to
> the DT bindings documentation instead causes a different check
> error due to the syscon document specifying a maximum of 1 item
> in the reg property, while this has 9.

Please change this part of the description...

> Nothing is using the pin
> controller as a syscon at the moment so it should be a safe
> thing to do.

...to:

This pin controller has never been, and will never be, used as a
syscon, hence it is safe to drop this compatible.

After which, you get my

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

> 
> Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
> ---
>   arch/arm64/boot/dts/mediatek/mt6779.dtsi | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt6779.dtsi b/arch/arm64/boot/dts/mediatek/mt6779.dtsi
> index 9bdf5145966c..a6fa5212da4e 100644
> --- a/arch/arm64/boot/dts/mediatek/mt6779.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt6779.dtsi
> @@ -160,7 +160,7 @@ infracfg_ao: clock-controller@...01000 {
>   		};
>   
>   		pio: pinctrl@...05000 {
> -			compatible = "mediatek,mt6779-pinctrl", "syscon";
> +			compatible = "mediatek,mt6779-pinctrl";
>   			reg = <0 0x10005000 0 0x1000>,
>   			      <0 0x11c20000 0 0x1000>,
>   			      <0 0x11d10000 0 0x1000>,