arm64: dts: ti: k3-am62-verdin: Add Toradex Capacitive Touch Display 10.1" LVDS

Add a device tree overlay for the Toradex Capacitive Touch Display 10.1"
LVDS connected via Verdin AM62 OLDI on carrier boards exposing LVDS
interface (e.g., Mallow). 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/20260522161105.277519-15-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 b2408f62c139c1c502bdecc81ba3cbc40ac629a6..867c05b675d12973690f4b7c055caa89d156cd69 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -33,6 +33,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-ivy.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-mallow.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-yavia.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-zinnia.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-10inch-lvds.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev-dsi-to-hdmi.dtb
@@ -213,6 +214,9 @@ k3-am625-sk-hdmi-audio-dtbs := k3-am625-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
 k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := \
        k3-am625-verdin-wifi-dev.dtb \
        k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
+k3-am625-verdin-wifi-mallow-panel-cap-touch-10inch-lvds-dtbs := \
+       k3-am625-verdin-wifi-mallow.dtb \
+       k3-am625-verdin-panel-cap-touch-10inch-lvds.dtbo
 k3-am62-lp-sk-hdmi-audio-dtbs := k3-am62-lp-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
 k3-am62-lp-sk-nand-dtbs := k3-am62-lp-sk.dtb k3-am62-lp-sk-nand.dtbo
 k3-am62a7-phyboard-lyra-disable-eth-phy-dtbs := k3-am62a7-phyboard-lyra-rdk.dtb \
@@ -315,6 +319,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
        k3-am625-sk-csi2-tevi-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-mallow-panel-cap-touch-10inch-lvds.dtb \
        k3-am62-lp-sk-hdmi-audio.dtb \
        k3-am62-lp-sk-nand.dtb \
        k3-am62a7-phyboard-lyra-disable-eth-phy.dtb \

diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-panel-cap-touch-10inch-lvds.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-panel-cap-touch-10inch-lvds.dtso
new file mode 100644 (file)
index 0000000..f83366b
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-panel-cap-touch-10inch-lvds.dtso
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 10.1" connected via Verdin AM62 OLDI
+ * on carrier boards with a Toradex standard LVDS display connector
+ * (e.g., Mallow).
+ *
+ * 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>
+#include "k3-pinctrl.h"
+
+&{/} {
+       backlight_pwm2: backlight-pwm2 {
+               compatible = "pwm-backlight";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_i2s_2_d_out_gpio>;
+               brightness-levels = <0 45 63 88 119 158 203 255>;
+               default-brightness-level = <4>;
+               /* Verdin I2S_2_D_OUT as GPIO (SODIMM 46) */
+               enable-gpios = <&main_gpio0 34 GPIO_ACTIVE_HIGH>;
+               /* Verdin PWM_2 (SODIMM 16) */
+               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>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_i2s_2_d_in_gpio>, <&pinctrl_i2s_2_sync_gpio>;
+               /* Verdin I2S_2_SYNC as GPIO (SODIMM 44) */
+               interrupt-parent = <&main_gpio0>;
+               interrupts = <37 IRQ_TYPE_EDGE_FALLING>;
+               /* Verdin I2S_2_D_IN as GPIO (SODIMM 48) */
+               reset-gpios = <&main_gpio0 33 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&main_pmx0 {
+       /* Mallow Touch RST */
+       pinctrl_i2s_2_d_in_gpio: main-gpio0-33-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x0088, PIN_INPUT, 7) /* (L24) GPMC0_OEn_REn.GPIO0_33 */ /* SODIMM 48 */
+               >;
+       };
+
+       /* Mallow Touch INT# */
+       pinctrl_i2s_2_sync_gpio: main-gpio0-37-default-pins {
+               pinctrl-single,pins = <
+                       AM62X_IOPAD(0x0098, PIN_INPUT, 7) /* (U23) GPMC0_WAIT0.GPIO0_37 */ /* SODIMM 44 */
+               >;
+       };
+};
+
+&oldi0 {
+       status = "okay";
+};
+
+&oldi0_port0 {
+       oldi0_in: endpoint {
+               remote-endpoint = <&dss0_out>;
+       };
+};
+
+&oldi0_port1 {
+       oldi0_out: endpoint {
+               remote-endpoint = <&panel_lvds_native_in>;
+       };
+};