linux-kernel - [PATCH v1 4/4] ARM: dts: ccimx6ulsbcpro: Add support for Goodix touch controller

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Date:   Thu, 25 Oct 2018 17:09:33 +0200
From:   Alex Gonzalez <alex.gonzalez@...i.com>
To:     <thierry.reding@...il.com>, <airlied@...ux.ie>,
        <dri-devel@...ts.freedesktop.org>, <shawnguo@...nel.org>
CC:     <robh+dt@...nel.org>, <mark.rutland@....com>,
        <s.hauer@...gutronix.de>, <kernel@...gutronix.de>,
        <fabio.estevam@....com>, <linux-imx@....com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <alex.gonzalez@...i.com>
Subject: [PATCH v1 4/4] ARM: dts: ccimx6ulsbcpro: Add support for Goodix touch controller

The ConnectCore 6UL SBC Pro has an AUO/Goodix LCD accessory kit that is
connected on the LVDS interface through an on-board LVDS transceiver.

This change adds support for the touch interface.

Signed-off-by: Alex Gonzalez <alex.gonzalez@...i.com>
---
 arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts b/arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts
index f6e6b2cf780b..3749fdda3611 100644
--- a/arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts
+++ b/arch/arm/boot/dts/imx6ul-ccimx6ulsbcpro.dts
@@ -117,6 +117,19 @@
 	};
 };
 
+&i2c1 {
+	touchscreen@14 {
+		compatible = "goodix,gt911";
+		reg = <0x14>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_goodix_touch>;
+		interrupt-parent = <&gpio5>;
+		interrupts = <2 IRQ_TYPE_EDGE_RISING>;
+		irq-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+		status = "okay";
+	};
+};
+
 &lcdif {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_lcdif_dat0_17
@@ -290,6 +303,12 @@
 		>;
 	};
 
+	pinctrl_goodix_touch: goodixgrp{
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x1020
+		>;
+	};
+
 	pinctrl_lcdif_dat0_17: lcdifdatgrp0-17 {
 		fsl,pins = <
 			MX6UL_PAD_LCD_DATA00__LCDIF_DATA00	0x79