From c82ef94b3a2105482deebc37156d682f194d067e Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <digetx@gmail.com>
Date: Fri, 14 Aug 2020 03:21:38 +0300
Subject: [PATCH] ARM: tegra: nexus7: Add touchscreen

Nexus 7 2012 has Elantech EKTF3624 touchscreen, this patch adds TS node to
the device-tree.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../tegra30-asus-nexus7-grouper-common.dtsi    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi b/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
index bca77ee33c74..a84b8e3f71f2 100644
--- a/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
+++ b/arch/arm/boot/dts/tegra30-asus-nexus7-grouper-common.dtsi
@@ -839,6 +839,24 @@
 	i2c@7000c400 {
 		clock-frequency = <400000>;
 		status = "okay";
+
+		touchscreen@10 {
+			compatible ="elan,ektf3624";
+			reg = <0x10>;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(H, 4) IRQ_TYPE_LEVEL_LOW>;
+
+			reset-gpios = <&gpio TEGRA_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+
+			vcc33-supply = <&vcc_3v3_ts>;
+			vccio-supply = <&vcc_3v3_ts>;
+
+			touchscreen-size-x = <2112>;
+			touchscreen-size-y = <1280>;
+			touchscreen-swapped-x-y;
+			touchscreen-inverted-x;
+		};
 	};
 
 	i2c@7000c500 {