linux-kernel - Re: [PATCH v2] arm64: dts: mt8183: kukui: Add Type C node

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Date:   Thu, 9 Dec 2021 14:49:57 -0800
From:   Alexandru M Stan <amstan@...omium.org>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Benson Leung <bleung@...omium.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v2] arm64: dts: mt8183: kukui: Add Type C node

On Thu, Dec 9, 2021 at 11:51 AM Prashant Malani <pmalani@...omium.org> wrote:
>
> Add a node describing the USB Type C connector, in order to utilize the
> Chromium OS USB Type-C driver that enumerates Type-C ports and connected
> cables/peripherals and makes them visible to userspace.
>
> Cc: Alexandru M Stan <amstan@...omium.org>
> Cc: Benson Leung <bleung@...omium.org>
> Signed-off-by: Prashant Malani <pmalani@...omium.org>
> ---
>
> Changes in v2:
> - Alexandru mentioned that HW specs suggest preferred power role for
>   devices like kukui to be sink, so changed try-power-role to "sink".
>
>  arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> index 94c13c459194..0f9480f91261 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> @@ -886,6 +886,20 @@ usbc_extcon: extcon0 {
>                 cbas {
>                         compatible = "google,cros-cbas";
>                 };
> +
> +               typec {
> +                       compatible = "google,cros-ec-typec";
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +
> +                       usb_c0: connector@0 {
> +                               compatible = "usb-c-connector";
> +                               reg = <0>;
> +                               power-role = "dual";
> +                               data-role = "host";
> +                               try-power-role = "sink";
> +                       };
> +               };
>         };
>  };
>
> --
> 2.34.1.173.g76aa8bc2d0-goog
>

Thanks!

Reviewed-by: Alexandru M Stan <amstan@...omium.org>