From f61fdd70f112ec5226f7adde3c29cf7aa55c6a42 Mon Sep 17 00:00:00 2001
From: Abel Vesa <abel.vesa@oss.qualcomm.com>
Date: Wed, 8 Jul 2026 13:18:26 +0300
Subject: [PATCH] arm64: dts: qcom: eliza-mtp: Enable touchscreen

The Eliza MTP uses a Goodix GT9916 touchscreen controller connected
over SPI.

Describe the controller, its power supply, interrupt and reset GPIOs to
enable touchscreen support.

Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260708-dts-qcom-eliza-mtp-enable-ts-v1-1-372020a7a86b@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
 arch/arm64/boot/dts/qcom/eliza-mtp.dts | 39 ++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/eliza-mtp.dts b/arch/arm64/boot/dts/qcom/eliza-mtp.dts
index a7d6f9d52ef3..5abc23b9b676 100644
--- a/arch/arm64/boot/dts/qcom/eliza-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/eliza-mtp.dts
@@ -484,6 +484,30 @@
 	status = "okay";
 };
 
+&spi8 {
+	status = "okay";
+
+	touchscreen@0 {
+		compatible = "goodix,gt9916";
+		reg = <0>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <13 IRQ_TYPE_LEVEL_LOW>;
+
+		reset-gpios = <&tlmm 16 GPIO_ACTIVE_LOW>;
+
+		avdd-supply = <&vreg_l22b>;
+
+		spi-max-frequency = <1000000>;
+
+		touchscreen-size-x = <1080>;
+		touchscreen-size-y = <2400>;
+
+		pinctrl-0 = <&ts_irq>, <&ts_reset>;
+		pinctrl-names = "default";
+	};
+};
+
 &tlmm {
 	gpio-reserved-ranges = <20 4>,   /* NFC SPI */
 			       <111 2>,  /* WCN UART1 */
@@ -509,6 +533,21 @@
 		drive-strength = <2>;
 		bias-pull-down;
 	};
+
+	ts_irq: ts-irq-state {
+		pins = "gpio13";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-up;
+		output-disable;
+	};
+
+	ts_reset: ts-reset-state {
+		pins = "gpio16";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-up;
+	};
 };
 
 &uart13 {