[PATCH v2 5/7] arm64: dts: freescale: imx8mm-verdin: Add Toradex Capacitive Touch Display 7" DSI

From: Ernest Van Hoecke

Date: Fri Jul 24 2026 - 12:38:22 EST

From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>

Add a device tree overlay for the Toradex Capacitive Touch Display 7"
on the Verdin DSI_1 interface. The display features an internal Texas
Instruments SN65DSI83 DSI-to-LVDS bridge driving a Riverdi
RVT70HSLNWCA0 7" WSVGA IPS TFT LCD panel. The touch input is provided
by an Ilitek ILI2132 capacitive touch controller.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-dsi
Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-display-adapter
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
---
arch/arm64/boot/dts/freescale/Makefile | 4 +
.../imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso | 129 +++++++++++++++++++++
2 files changed, 133 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 00dc2893c754..fe261d7bdab5 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -191,12 +191,14 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-yavia-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-yavia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-zinnia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-panel-cap-touch-10inch-dsi.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-panel-cap-touch-7inch-dsi.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-nau8822-btl.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-panel-cap-touch-7inch-dsi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-ivy.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-mallow.dtb
@@ -216,6 +218,8 @@ imx8mm-verdin-wifi-dev-dsi-to-hdmi-dtbs := imx8mm-verdin-wifi-dev.dtb imx8mm-ver
imx8mm-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := imx8mm-verdin-wifi-dev.dtb \
imx8mm-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
imx8mm-verdin-wifi-dev-nau8822-btl-dtbs := imx8mm-verdin-wifi-dev.dtb imx8mm-verdin-dev-nau8822-btl.dtbo
+imx8mm-verdin-wifi-dev-panel-cap-touch-7inch-dsi-dtbs := imx8mm-verdin-wifi-dev.dtb \
+ imx8mm-verdin-panel-cap-touch-7inch-dsi.dtbo
imx8mm-verdin-wifi-yavia-dsi-to-hdmi-dtbs := imx8mm-verdin-wifi-yavia.dtb imx8mm-verdin-dsi-to-hdmi.dtbo

imx8mm-tqma8mqml-mba8mx-lvds-g133han01-dtbs += imx8mm-tqma8mqml-mba8mx.dtb imx8mm-tqma8mqml-mba8mx-lvds-g133han01.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso b/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso
new file mode 100644
index 000000000000..0e15b4b3f3ec
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 7" on Verdin DSI_1.
+ * On Dahlia (X17) and Development Board (X48), DSI_1 is exposed via a
+ * Samtec LSS-130 connector and requires the Toradex DSI Display Adapter
+ * to convert to FFC/FPC connector.
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-dsi
+ * https://www.toradex.com/accessories/capacitive-touch-display-7-inch-dsi
+ * https://developer.toradex.com/hardware/accessories/add-ons/dsi-display-adapter
+ * https://www.toradex.com/accessories/verdin-dsi-display-adapter
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+&{/} {
+ backlight_pwm3: backlight-pwm3 {
+ compatible = "pwm-backlight";
+ brightness-levels = <0 45 63 88 119 158 203 255>;
+ default-brightness-level = <4>;
+ power-supply = <&reg_3p3v>;
+ /* Verdin PWM_3_DSI (SODIMM 19) */
+ pwms = <&pwm1 0 6666667 0>;
+ };
+
+ panel-lvds-bridge {
+ compatible = "riverdi,rvt70hslnwca0", "panel-lvds";
+ backlight = <&backlight_pwm3>;
+ data-mapping = "vesa-24";
+ height-mm = <86>;
+ width-mm = <154>;
+
+ panel-timing {
+ clock-frequency = <51200000>;
+ de-active = <1>;
+ hactive = <1024>;
+ hback-porch = <100 100 100>;
+ hfront-porch = <16 160 216>;
+ hsync-active = <0>;
+ hsync-len = <50 60 140>;
+ pixelclk-active = <1>;
+ vactive = <600>;
+ vback-porch = <23 23 23>;
+ vfront-porch = <1 12 126>;
+ vsync-active = <0>;
+ vsync-len = <1 10 20>;
+ };
+
+ port {
+ panel_lvds_bridge_in: endpoint {
+ remote-endpoint = <&dsi_lvds_bridge_out>;
+ };
+ };
+ };
+};
+
+/* Verdin I2C_2_DSI */
+&i2c2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ status = "okay";
+
+ bridge@2c {
+ compatible = "ti,sn65dsi83";
+ reg = <0x2c>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpio_10_dsi>;
+ /* Verdin GPIO_10_DSI (SODIMM 21) - DSI_1_BKL_EN */
+ enable-gpios = <&gpio3 3 GPIO_ACTIVE_HIGH>;
+ vcc-supply = <&reg_1p8v>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ dsi_lvds_bridge_in: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&mipi_dsi_out>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
+ dsi_lvds_bridge_out: endpoint {
+ remote-endpoint = <&panel_lvds_bridge_in>;
+ };
+ };
+ };
+ };
+
+ touchscreen@41 {
+ compatible = "ilitek,ili2132";
+ reg = <0x41>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpio_9_dsi>, <&pinctrl_i2s_2_bclk_touch_reset>;
+ /* Verdin GPIO_9_DSI (SODIMM 17) - TOUCH_INT# */
+ /* Rising edge avoids spurious interrupts from the noisy falling edge. */
+ interrupt-parent = <&gpio3>;
+ interrupts = <15 IRQ_TYPE_EDGE_RISING>;
+ /* Verdin I2S_2_BCLK (SODIMM 42) - TOUCH_RESET# */
+ reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&lcdif {
+ status = "okay";
+};
+
+&mipi_dsi {
+ samsung,esc-clock-frequency = <16000000>;
+
+ status = "okay";
+};
+
+&mipi_dsi_out {
+ remote-endpoint = <&dsi_lvds_bridge_in>;
+};

--
2.43.0