[PATCH v3] arm64: dts: mediatek: cherry: Configure eDP and internal display

[Chen-Yu Tsai]

On Thu, Aug 17, 2023 at 3:04 AM Nícolas F. R. A. Prado
<nfraprado at collabora.com> wrote:
>
> From: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
>
> Add the required nodes to enable the DisplayPort interface, connected
> to the Embedded DisplayPort port, where we have an internal display.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> [nfraprado: removed always-on, added vin-supply and enable delay]
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>

Reviewed-by: Chen-Yu Tsai <wenst at chromium.org>
Tested-by: Chen-Yu Tsai <wenst at chromium.org>

> ---
> The MediaTek DRM changes needed for MT8195 have already been queued for
> v6.6 [1], so this DT patch is the last missing piece needed to get
> a working display on MT8195 Tomato.
>
> [1] https://lore.kernel.org/all/20230813152726.14802-1-chunkuang.hu@kernel.org/
>
> Changes in v3:
> - Split from "MT8195 Acer Tomato - devicetrees Part 3" series

The platform thermal patch from that series hasn't been merged either?

> - Removed regulator-always-on as it's no longer needed
> - Added missing vin-supply and regulator-enable-delay
>
>  .../boot/dts/mediatek/mt8195-cherry.dtsi      | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> index 37a3e9de90ff..dd5b89b73190 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> @@ -47,6 +47,19 @@ memory at 40000000 {
>                 reg = <0 0x40000000 0 0x80000000>;
>         };
>
> +       pp3300_disp_x: regulator-pp3300-disp-x {
> +               compatible = "regulator-fixed";
> +               regulator-name = "pp3300_disp_x";
> +               regulator-min-microvolt = <3300000>;
> +               regulator-max-microvolt = <3300000>;
> +               regulator-enable-ramp-delay = <2500>;
> +               enable-active-high;
> +               gpio = <&pio 55 GPIO_ACTIVE_HIGH>;
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&panel_fixed_pins>;
> +               vin-supply = <&pp3300_z2>;
> +       };
> +
>         /* system wide LDO 3.3V power rail */
>         pp3300_z5: regulator-pp3300-ldo-z5 {
>                 compatible = "regulator-fixed";
> @@ -217,6 +230,20 @@ port at 1 {
>                         reg = <1>;
>                         edp_out: endpoint {
>                                 data-lanes = <0 1 2 3>;
> +                               remote-endpoint = <&panel_in>;
> +                       };
> +               };
> +       };
> +
> +       aux-bus {
> +               panel {
> +                       compatible = "edp-panel";
> +                       power-supply = <&pp3300_disp_x>;
> +                       backlight = <&backlight_lcd0>;
> +                       port {
> +                               panel_in: endpoint {
> +                                       remote-endpoint = <&edp_out>;
> +                               };
>                         };
>                 };
>         };
> @@ -881,6 +908,12 @@ pins-bus {
>                 };
>         };
>
> +       panel_fixed_pins: panel-pwr-default-pins {
> +               pins-vreg-en {
> +                       pinmux = <PINMUX_GPIO55__FUNC_GPIO55>;
> +               };
> +       };
> +
>         pio_default: pio-default-pins {
>                 pins-wifi-enable {
>                         pinmux = <PINMUX_GPIO58__FUNC_GPIO58>;
> --
> 2.41.0
>