linux-kernel - Re: [PATCH v2] arm64: dts: mt8173: Add G2Touch touchscreen node

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Message-ID: <CAGXv+5FnzLgnNfvK-KEd4OUysUXqCuCp7AJ3iuzEGn=fry0B1g@mail.gmail.com>
Date:   Wed, 15 Nov 2023 14:08:34 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Pin-yen Lin <treapking@...omium.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: mt8173: Add G2Touch touchscreen node

On Wed, Nov 15, 2023 at 12:35 PM Pin-yen Lin <treapking@...omium.org> wrote:
>
> Lenovo Ideapad C330 Chromebook (MTK) uses G2Touch touchscreen as a
> second source component.
>
> Signed-off-by: Pin-yen Lin <treapking@...omium.org>
> Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>

I assume this patch will get merged relatively soon. I can base my DT
probing work on top of it, instead of having roughly the same patch
in my series.

> ---
>
> Changes in v2:
> - Remove the label for the node
>
>  arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
> index bdcd35cecad9..8836ac3c4233 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8173-elm-hana.dtsi
> @@ -29,6 +29,14 @@ touchscreen3: touchscreen@20 {
>                 interrupt-parent = <&pio>;
>                 interrupts = <88 IRQ_TYPE_LEVEL_LOW>;
>         };
> +
> +       touchscreen@40 {
> +               compatible = "hid-over-i2c";
> +               reg = <0x40>;
> +               hid-descr-addr = <0x0001>;
> +               interrupt-parent = <&pio>;
> +               interrupts = <88 IRQ_TYPE_LEVEL_LOW>;

I assume Angelo might ask you to use interrupts-extended instead, but
I'd argue it's better to be consistent throughout the file.

> +       };
>  };
>
>  &i2c4 {
> --
> 2.43.0.rc0.421.g78406f8d94-goog
>