[PATCH v3 02/11] arm64: dts: ti: k3-am62-verdin: Add Toradex Capacitive Touch Display 10.1" LVDS

[Vitor Soares <ivitro@gmail.com>]

From: Vitor Soares <vitor.soares@toradex.com>

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>
---
Changes in v3:
- Add missing regulator-name property on fixed regulators
- Simplify regulator labels
- Rename touch@ nodes to touchscreen@

Changes in v2:
- Use panel-simple compatible form

 arch/arm64/boot/dts/ti/Makefile               |   5 +
 ...25-verdin-panel-cap-touch-10inch-lvds.dtso | 120 ++++++++++++++++++
 2 files changed, 125 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-panel-cap-touch-10inch-lvds.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index b2408f62c139..867c05b675d1 100644
--- 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
index 000000000000..f83366b11bdb
--- /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>;
+	};
+};
-- 
2.54.0