arm64: dts: qcom: sm6115p-j606f: Hook up display

Enable the required nodes, add the required pins and tweak a
regulator to enable non-simplefb display on the Tab P11.

Do note that there exists a second SKU with a different panel+touch
combo, but due to insufficient information, that will need to be
handled separately.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230620-topic-gpu_tablet_disp-v2-2-0538ea1beb0b@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts

@@ -65,9 +65,41 @@ ramoops@ffc00000 {
 	};
 };
 
-&dispcc {
-	/* HACK: disable until a panel driver is ready to retain simplefb */
-	status = "disabled";
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&pm6125_l18>;
+	status = "okay";
+
+	panel: panel@0 {
+		compatible = "lenovo,j606f-boe-nt36523w", "novatek,nt36523w";
+		reg = <0>;
+
+		reset-gpios = <&tlmm 82 GPIO_ACTIVE_LOW>;
+		vddio-supply = <&pm6125_l9>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&te_active &mdss_dsi_active>;
+
+		rotation = <180>; /* Yep, it's mounted upside down! */
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	data-lanes = <0 1 2 3>;
+	remote-endpoint = <&panel_in>;
+};
+
+&mdss_dsi0_phy {
+	status = "okay";
 };
 
 &pm6125_gpios {
@@ -212,8 +244,9 @@ pm6125_l17: l17 {
 		};
 
 		pm6125_l18: l18 {
-			regulator-min-microvolt = <1104000>;
-			regulator-max-microvolt = <1312000>;
+			/* 1.104V-1.312V fixed @ 1.232V for DSIPHY */
+			regulator-min-microvolt = <1232000>;
+			regulator-max-microvolt = <1232000>;
 		};
 
 		pm6125_l19: l19 {
@@ -282,6 +315,20 @@ sdc2_gate_pin: sdc2-gate-state {
 		bias-pull-up;
 		output-high;
 	};
+
+	te_active: te-active-state {
+		pins = "gpio81";
+		function = "mdp_vsync";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	mdss_dsi_active: dsi-active-state {
+		pins = "gpio82";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
 };
 
 &ufs_mem_hc {