linux-kernel - [PATCH v1 2/4] arm64: dts: imx93-var-som-symphony: Add support for ft5x06 touch controller

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Message-ID: <20251205182258.50397-3-stefano.r@variscite.com>
Date: Fri,  5 Dec 2025 19:22:55 +0100
From: Stefano Radaelli <stefano.r@...iscite.com>
To: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Stefano Radaelli <stefano.r@...iscite.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 2/4] arm64: dts: imx93-var-som-symphony: Add support for ft5x06 touch controller

The Symphony carrier board exposes a capacitive touch interface through an
FFC/FPC connector. This interface is wired to an FT5x06 touch controller
on the I2C bus when using Variscite’s 7-inch capacitive touch display.

This patch adds the FT5x06 device node to describe the actual hardware
connection and enables touch functionality on the Symphony board

Signed-off-by: Stefano Radaelli <stefano.r@...iscite.com>
---
 .../dts/freescale/imx93-var-som-symphony.dts  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx93-var-som-symphony.dts
index 00bdd3b91fdc..39bfbd0428a9 100644
--- a/arch/arm64/boot/dts/freescale/imx93-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-var-som-symphony.dts
@@ -208,6 +208,21 @@ &lpi2c1 {
 	sda-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
 	status = "okay";
 
+	/* Capacitive touch controller */
+	ft5x06_ts: touchscreen@38 {
+		compatible = "edt,edt-ft5206";
+		reg = <0x38>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_captouch>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <480>;
+		touchscreen-inverted-x;
+		touchscreen-inverted-y;
+		wakeup-source;
+	};
+
 	/* DS1337 RTC module */
 	rtc@68 {
 		compatible = "dallas,ds1337";
@@ -272,6 +287,12 @@ &wdog3 {
 };
 
 &iomuxc {
+	pinctrl_captouch: captouchgrp {
+		fsl,pins = <
+			MX93_PAD_GPIO_IO25__GPIO2_IO25                  0x31e
+		>;
+	};
+
 	pinctrl_fec: fecgrp {
 		fsl,pins = <
 			MX93_PAD_ENET2_RD0__ENET1_RGMII_RD0		0x57e
-- 
2.47.3