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References: <20210106084626.2181286-1-hsinyi@chromium.org>
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From:   Nicolas Boichat <drinkcat@chromium.org>
Date:   Wed, 6 Jan 2021 18:47:48 +0800
Message-ID: <CANMq1KAoboK45uOhKMYZ-=TvBBQRZhEeij=ha6MqSKZiYx64eQ@mail.gmail.com>
Subject: Re: [PATCH 1/2] arm64: dts: mt8183: config dsi node
To:     Hsin-Yi Wang <hsinyi@chromium.org>
Cc:     linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Enric Balletbo i Serra <enric.balletbo@collabora.com>,
        Devicetree List <devicetree@vger.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        lkml <linux-kernel@vger.kernel.org>
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On Wed, Jan 6, 2021 at 4:46 PM Hsin-Yi Wang <hsinyi@chromium.org> wrote:
>
> Config dsi node for mt8183 kukui. Set panel and ports.
>
> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
> ---
>  .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 38 +++++++++++++++++++
>  1 file changed, 38 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> index bf2ad1294dd30..4cfb3560e5d11 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> @@ -249,6 +249,36 @@ &cpu7 {
>         proc-supply = <&mt6358_vproc11_reg>;
>  };
>
> +&dsi0 {
> +       status = "okay";
> +       #address-cells = <1>;
> +       #size-cells = <0>;
> +       panel: panel@0 {
> +               compatible = "boe,tv101wum-nl6";

We're going to have many panels in the kukui family, so I think I'd
prefer it if you moved the compatible string to krane-sku0 dts: it
makes it easier to figure out what's different with sku0.

Then maybe leave all the other properties in this file, as it seems
like all MIPI panels use the exact same pin/supplies?

(And add a comment here saying that the compatible needs to be set in
board dts?)

> +               reg = <0>;
> +               enable-gpios = <&pio 45 0>;
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&panel_pins_default>;
> +               avdd-supply = <&ppvarn_lcd>;
> +               avee-supply = <&ppvarp_lcd>;
> +               pp1800-supply = <&pp1800_lcd>;
> +               status = "okay";
> +               port {
> +                       panel_in: endpoint {
> +                               remote-endpoint = <&dsi_out>;
> +                       };
> +               };
> +       };
> +
> +       ports {
> +               port {
> +                       dsi_out: endpoint {
> +                               remote-endpoint = <&panel_in>;
> +                       };
> +               };
> +       };
> +};
> +
>  &i2c0 {
>         pinctrl-names = "default";
>         pinctrl-0 = <&i2c0_pins>;
> @@ -547,6 +577,14 @@ pins_clk {
>                 };
>         };
>
> +       panel_pins_default: panel_pins_default {
> +               panel_reset {
> +                       pinmux = <PINMUX_GPIO45__FUNC_GPIO45>;
> +                       output-low;
> +                       bias-pull-up;
> +               };
> +       };
> +
>         pwm0_pin_default: pwm0_pin_default {
>                 pins1 {
>                         pinmux = <PINMUX_GPIO176__FUNC_GPIO176>;
> --
> 2.29.2.729.g45daf8777d-goog
>