linux-kernel - [PATCH 3/5] arm64: dts: mediatek: cherry: Configure eDP and internal display

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Message-Id: <20230420094433.42794-4-angelogioacchino.delregno@collabora.com>
Date:   Thu, 20 Apr 2023 11:44:31 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     matthias.bgg@...il.com
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: [PATCH 3/5] arm64: dts: mediatek: cherry: Configure eDP and internal display

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@...labora.com>
---
 .../boot/dts/mediatek/mt8195-cherry.dtsi      | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 918380697a9a..46f1c8091498 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -49,6 +49,18 @@ memory@...00000 {
 		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>;
+		enable-active-high;
+		gpio = <&pio 55 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&panel_fixed_pins>;
+		regulator-always-on;
+	};
+
 	/* system wide LDO 3.3V power rail */
 	pp3300_z5: regulator-pp3300-ldo-z5 {
 		compatible = "regulator-fixed";
@@ -290,6 +302,20 @@ port@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>;
+				};
 			};
 		};
 	};
@@ -929,6 +955,12 @@ pins-cs {
 		};
 	};
 
+	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>;
-- 
2.40.0