arm64: dts: ti: k3-am62-verdin: Add Mezzanine with Toradex Display 10.1" LVDS

Add a device tree overlay enabling the Toradex Capacitive Touch Display
10.1" LVDS on the Verdin Development Board with Verdin AM62 Mezzanine
expansion board. The panel connects via the AM62 OLDI0 on the Mezzanine
LVDS interface (J10). The panel is a LogicTechno LT170410-2WHC 10.1" WXGA
IPS LCD and the touch input is provided by an Atmel MaxTouch capacitive
touch controller.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds
Assisted-by: Claude:claude-sonnet-4.6
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260522161105.277519-24-ivitro@gmail.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 90bb3b0522d305b03518cee87ebe2e1aa0a0d7e5..371f9a043fe5210e0f175f51d9ecb50c091164c2 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -30,6 +30,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-tqma62xx-mba62xx.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-mezzanine-can.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-nau8822-btl.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dsi-to-hdmi.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
@@ -231,6 +232,9 @@ k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := \
        k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
 k3-am625-verdin-wifi-dev-mezzanine-can-dtbs := k3-am625-verdin-wifi-dev.dtb \
        k3-am625-verdin-dev-mezzanine-can.dtbo
+k3-am625-verdin-wifi-dev-mezzanine-panel-cap-touch-10inch-lvds-dtbs := \
+       k3-am625-verdin-wifi-dev.dtb \
+       k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtbo
 k3-am625-verdin-wifi-dev-nau8822-btl-dtbs := k3-am625-verdin-wifi-dev.dtb \
        k3-am625-verdin-dev-nau8822-btl.dtbo
 k3-am625-verdin-wifi-dev-ov5640-24mhz-dtbs := k3-am625-verdin-wifi-dev.dtb \
@@ -348,6 +352,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
        k3-am625-sk-hdmi-audio.dtb \
        k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb \
        k3-am625-verdin-wifi-dev-mezzanine-can.dtb \
+       k3-am625-verdin-wifi-dev-mezzanine-panel-cap-touch-10inch-lvds.dtb \
        k3-am625-verdin-wifi-dev-nau8822-btl.dtb \
        k3-am625-verdin-wifi-dev-ov5640-24mhz.dtb \
        k3-am625-verdin-wifi-dev-ov5640.dtb \

diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtso
new file mode 100644 (file)
index 0000000..83fc4f3
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtso
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 10.1" LVDS on the Verdin AM62 Mezzanine
+ * LVDS interface (J10), used with the Verdin Development Board.
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds
+ * https://www.toradex.com/accessories/capacitive-touch-display-10.1-inch-lvds
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+&{/} {
+       backlight_pwm2: backlight-pwm2 {
+               compatible = "pwm-backlight";
+               brightness-levels = <0 45 63 88 119 158 203 255>;
+               default-brightness-level = <4>;
+               /* Verdin GPIO_4 (SODIMM 212) - LVDS_BKL_EN */
+               enable-gpios = <&mcu_gpio0 4 GPIO_ACTIVE_HIGH>;
+               /* Verdin PWM_2 (SODIMM 16) - LVDS_PWM */
+               pwms = <&epwm0 1 6666667 PWM_POLARITY_INVERTED>;
+       };
+
+       panel-lvds-native {
+               compatible = "logictechno,lt170410-2whc";
+               backlight = <&backlight_pwm2>;
+               power-supply = <&reg_3v3_lvds>;
+
+               port {
+                       panel_lvds_native_in: endpoint {
+                               remote-endpoint = <&oldi0_out>;
+                       };
+               };
+       };
+
+       reg_3v3_lvds: regulator-3v3-lvds {
+               compatible = "regulator-fixed";
+               regulator-max-microvolt = <3300000>;
+               regulator-min-microvolt = <3300000>;
+               regulator-name = "+V3.3_LVDS";
+       };
+};
+
+&dss {
+       status = "okay";
+};
+
+&dss_ports {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       /* DSS VP1: internal DPI output to OLDIx */
+       port@0 {
+               reg = <0>;
+
+               dss0_out: endpoint {
+                       remote-endpoint = <&oldi0_in>;
+               };
+       };
+};
+
+/* Verdin I2C_2_DSI */
+&main_i2c2 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       touchscreen@4a {
+               compatible = "atmel,maxtouch";
+               reg = <0x4a>;
+               /* Verdin GPIO_3 (SODIMM 210) - LVDS_TOUCH_INT# */
+               interrupt-parent = <&mcu_gpio0>;
+               interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+               /* Verdin GPIO_2 (SODIMM 208) - LVDS_TOUCH_RST# */
+               reset-gpios = <&mcu_gpio0 2 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&oldi0 {
+       status = "okay";
+};
+
+&oldi0_port0 {
+       oldi0_in: endpoint {
+               remote-endpoint = <&dss0_out>;
+       };
+};
+
+&oldi0_port1 {
+       oldi0_out: endpoint {
+               remote-endpoint = <&panel_lvds_native_in>;
+       };
+};