tlmm 74 was experimentally found to be panel enable pin, which shall be
high for panel (both low-res IPS, OLED) to work. Define it as such.

Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com>
---
 .../arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
index 6f78b61f8da3..93d90209060c 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
@@ -560,10 +560,13 @@ &mdss_dp3 {
 
 	aux-bus {
 		panel {
-			/* 1920x1200 IPS panel is SHP1593, PNP09FF compatible */
 			compatible = "edp-panel";
+			enable-gpios = <&tlmm 74 GPIO_ACTIVE_HIGH>;
 			power-supply = <&vreg_edp_3p3>;
 
+			pinctrl-0 = <&edp_bl_en>;
+			pinctrl-names = "default";
+
 			port {
 				edp_panel_in: endpoint {
 					remote-endpoint = <&mdss_dp3_out>;
@@ -677,6 +680,13 @@ cam_indicator_en: cam-indicator-en-state {
 		bias-disable;
 	};
 
+	edp_bl_en: edp-bl-en-state {
+		pins = "gpio74";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	edp_reg_en: edp-reg-en-state {
 		pins = "gpio70";
 		function = "gpio";
-- 
2.45.2