[PATCH v1 2/3] ARM: dts: imx7d-colibri-emmc: Add Toradex Capacitive Touch Display 7" Parallel with Touch Adapter

[Francesco Dolcini <francesco@dolcini.it>]

From: Francesco Dolcini <francesco.dolcini@toradex.com>

Add a device tree overlay for the Capacitive Touch Display 7" Parallel
on the Colibri iMX7 parallel RGB LCD interface.

The panel is a LogicTechno LT161010-2NHC 7" WVGA TFT Transmissive LCD
and the touch input is provided by an Atmel MaxTouch capacitive touch
controller.

The touch controller is connected to the Toradex Capacitive Touch
Adapter, the connection to the various carrier boards is documented in
the datasheet [1].

The overlay is also combined with the Eval carrier board device tree to
provide a ready-to-use DTB.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-parallel/
Link: https://developer.toradex.com/hardware/accessories/add-ons/capacitive-touch-adapter/
Link: https://docs.toradex.com/104615-capacitive-touch-adapter-datasheet.pdf [1]
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
 arch/arm/boot/dts/nxp/imx/Makefile            |  5 ++
 ...ap-touch-7inch-parallel-touch-adapter.dtso | 58 +++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtso

diff --git a/arch/arm/boot/dts/nxp/imx/Makefile b/arch/arm/boot/dts/nxp/imx/Makefile
index 4d2730000202..3c16843c3071 100644
--- a/arch/arm/boot/dts/nxp/imx/Makefile
+++ b/arch/arm/boot/dts/nxp/imx/Makefile
@@ -428,6 +428,10 @@ imx7d-colibri-emmc-iris-v2-panel-cap-touch-7inch-parallel-dtbs := \
 	imx7d-colibri-emmc-iris-v2.dtb \
 	imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtbo
 
+imx7d-colibri-emmc-eval-v3-panel-cap-touch-7inch-parallel-touch-adapter-dtbs := \
+	imx7d-colibri-emmc-eval-v3.dtb \
+	imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtbo
+
 dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-cl-som-imx7.dtb \
 	imx7d-colibri-aster.dtb \
@@ -437,6 +441,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-colibri-emmc-iris-v2.dtb \
 	imx7d-colibri-emmc-iris-v2-panel-cap-touch-7inch-parallel.dtb \
 	imx7d-colibri-emmc-eval-v3.dtb \
+	imx7d-colibri-emmc-eval-v3-panel-cap-touch-7inch-parallel-touch-adapter.dtb \
 	imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtbo \
 	imx7d-colibri-eval-v3.dtb \
 	imx7d-colibri-iris.dtb \
diff --git a/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtso b/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtso
new file mode 100644
index 000000000000..890461f92442
--- /dev/null
+++ b/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtso
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 7" Parallel connected through the 40-way
+ * Unified Interface Display connector and Toradex Capacitive Touch Adapter.
+ *
+ * Toradex Capacitive Touch Adapter connection with the various carrier boards
+ * is documented in the datasheet [1].
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-parallel/
+ * https://www.toradex.com/accessories/capacitive-touch-display-7-inch-parallel
+ * https://docs.toradex.com/104497-7-inch-parallel-capacitive-touch-display-800x480-datasheet.pdf
+ * https://developer.toradex.com/hardware/accessories/add-ons/capacitive-touch-adapter/
+ * https://www.toradex.com/accessories/capacitive-touch-adapter
+ * https://docs.toradex.com/104615-capacitive-touch-adapter-datasheet.pdf [1]
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&atmel_mxt_ts {
+	pinctrl-0 = <&pinctrl_atmel_adapter>;
+	/* SODIMM 28 / TOUCH_INT# */
+	interrupt-parent = <&gpio1>;
+	interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
+	/* SODIMM 30 / TOUCH_RST# */
+	reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
+&backlight {
+	status = "okay";
+};
+
+&lcdif {
+	status = "okay";
+};
+
+&panel_dpi {
+	compatible = "logictechno,lt161010-2nhc";
+
+	status = "okay";
+};
+
+/* Conflict with SODIMM 28 / TOUCH_INT# */
+&pwm2 {
+	status = "disabled";
+};
+
+/* Conflict with SODIMM 30 / TOUCH_RST# */
+&pwm3 {
+	status = "disabled";
+};
-- 
2.47.3