Re: [PATCH v1 4/7] ARM: dts: imx6ull-colibri-emmc: Add Toradex Capacitive Touch Display 7" Parallel

[Frank Li <Frank.li@oss.nxp.com>]

On Thu, Oct 01, 2026 at 07:49:13PM +0200, Francesco Dolcini wrote:
> From: Francesco Dolcini <francesco.dolcini@toradex.com>
>
> Add a device tree overlay for the Capacitive Touch Display 7" Parallel
> on the Colibri iMX6ULL eMMC 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 10-way Capacitive Touch
> Interface connector available on Iris v2 and Aster carrier boards.
>
> The panel, backlight and LCDIF configuration is identical to the Colibri
> iMX7 eMMC one, only the Atmel MaxTouch controller wiring is SoC
> specific. To avoid duplicating it, rework the Colibri iMX7 eMMC overlay
> moving the common part to a new dtsi shared between the two modules,
> and include it from both overlays.
>
> The overlay is also combined with the Iris v2 and Aster carrier board
> device tree to provide a ready-to-use DTB.
>
> Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-parallel/
> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
> ---
>  arch/arm/boot/dts/nxp/imx/Makefile            | 12 +++++++
>  ...i-emmc-panel-cap-touch-7inch-parallel.dtso | 31 +++++++++++++++++++
>  ...olibri-panel-cap-touch-7inch-parallel.dtsi | 29 +++++++++++++++++
>  ...i-emmc-panel-cap-touch-7inch-parallel.dtso | 16 ++--------
>  4 files changed, 74 insertions(+), 14 deletions(-)
>  create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
>  create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi
>
> diff --git a/arch/arm/boot/dts/nxp/imx/Makefile b/arch/arm/boot/dts/nxp/imx/Makefile
> index 0aece8cc9fe4..eee3f4e8e7c0 100644
> --- a/arch/arm/boot/dts/nxp/imx/Makefile
> +++ b/arch/arm/boot/dts/nxp/imx/Makefile
> @@ -352,6 +352,15 @@ dtb-$(CONFIG_SOC_IMX6SX) += \
>  	imx6sx-udoo-neo-basic.dtb \
>  	imx6sx-udoo-neo-extended.dtb \
>  	imx6sx-udoo-neo-full.dtb
> +
> +imx6ull-colibri-emmc-aster-panel-cap-touch-7inch-parallel-dtbs := \
> +	imx6ull-colibri-emmc-aster.dtb \
> +	imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtbo
> +
> +imx6ull-colibri-emmc-iris-v2-panel-cap-touch-7inch-parallel-dtbs := \
> +	imx6ull-colibri-emmc-iris-v2.dtb \
> +	imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtbo
> +
>  dtb-$(CONFIG_SOC_IMX6UL) += \
>  	imx6ul-14x14-evk.dtb \
>  	imx6ul-ccimx6ulsbcexpress.dtb \
> @@ -380,9 +389,12 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
>  	imx6ull-14x14-evk.dtb \
>  	imx6ull-colibri-aster.dtb \
>  	imx6ull-colibri-emmc-aster.dtb \
> +	imx6ull-colibri-emmc-aster-panel-cap-touch-7inch-parallel.dtb \
>  	imx6ull-colibri-emmc-eval-v3.dtb \
>  	imx6ull-colibri-emmc-iris.dtb \
>  	imx6ull-colibri-emmc-iris-v2.dtb \
> +	imx6ull-colibri-emmc-iris-v2-panel-cap-touch-7inch-parallel.dtb \
> +	imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtbo \
>  	imx6ull-colibri-eval-v3.dtb \
>  	imx6ull-colibri-iris.dtb \
>  	imx6ull-colibri-iris-v2.dtb \
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtso b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
> new file mode 100644
> index 000000000000..2edf680b1884
> --- /dev/null
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +/*
> + * Copyright (c) Toradex
> + *
> + * Toradex Capacitive Touch Display 7" Parallel connected through the 40-way
> + * Unified Interface Display and 10-way Capacitive Touch Interface connectors
> + * (as featured on Iris v2 and Aster v1.1 carrier boards).
> + *
> + * https://docs.toradex.com/104497-7-inch-parallel-capacitive-touch-display-800x480-datasheet.pdf
> + * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-parallel/
> + * https://www.toradex.com/accessories/capacitive-touch-display-7-inch-parallel
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +#include "imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi"
> +
> +&atmel_mxt_ts {
> +	pinctrl-0 = <&pinctrl_atmel_conn &pinctrl_atmel_snvs_conn>;
> +	/* SODIMM 107 / TOUCH_INT# */
> +	interrupt-parent = <&gpio5>;
> +	interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
> +	/* SODIMM 106 / TOUCH_RST# */
> +	reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> +
> +	status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi
> new file mode 100644
> index 000000000000..21688c63d11f
> --- /dev/null
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi

File name include lt161010, incase there are more panel.

Frank

> @@ -0,0 +1,29 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +/*
> + * Copyright (c) Toradex
> + *
> + * Panel, backlight and LCDIF part of the Toradex Capacitive Touch Display 7"
> + * Parallel overlays, connected through the 40-way Unified Interface Display
> + * connector, shared by the Colibri iMX6ULL eMMC and Colibri iMX7 eMMC overlays.
> + *
> + * The Atmel MaxTouch controller wiring is SoC specific and is described by
> + * the overlay including this file.
> + *
> + * https://docs.toradex.com/104497-7-inch-parallel-capacitive-touch-display-800x480-datasheet.pdf
> + * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-parallel/
> + * https://www.toradex.com/accessories/capacitive-touch-display-7-inch-parallel
> + */
> +
> +&backlight {
> +	status = "okay";
> +};
> +
> +&lcdif {
> +	status = "okay";
> +};
> +
> +&panel_dpi {
> +	compatible = "logictechno,lt161010-2nhc";
> +
> +	status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtso b/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
> index f336f7b05a2b..211acf11e438 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
> +++ b/arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtso
> @@ -17,6 +17,8 @@
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
>
> +#include "imx6ull-imx7-colibri-panel-cap-touch-7inch-parallel.dtsi"
> +
>  &atmel_mxt_ts {
>  	pinctrl-0 = <&pinctrl_atmel_connector>;
>  	/* SODIMM 107 / TOUCH_INT# */
> @@ -27,17 +29,3 @@ &atmel_mxt_ts {
>
>  	status = "okay";
>  };
> -
> -&backlight {
> -	status = "okay";
> -};
> -
> -&lcdif {
> -	status = "okay";
> -};
> -
> -&panel_dpi {
> -	compatible = "logictechno,lt161010-2nhc";
> -
> -	status = "okay";
> -};
> --
> 2.47.3
>
>