arm64: dts: ti: k3-am62-verdin: Add Toradex DSI to LVDS adapter with 10.1" display

Add a device tree overlay for the Toradex DSI to LVDS Adapter with the
Toradex Capacitive Touch Display 10.1" LVDS. The adapter connects to the
Verdin DSI_1 interface. It is based on the Texas Instruments SN65DSI84
DSI-to-LVDS bridge and drives a LogicTechno LT170410-2WHC 10.1" WXGA LVDS
panel. Touch input is provided by an Atmel MaxTouch capacitive touch
controller.

Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-lvds-adapter
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/20260522161105.277519-14-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 21db60cd19de6744e512fb11be7cfc93120bb771..b2408f62c139c1c502bdecc81ba3cbc40ac629a6 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -24,6 +24,7 @@ 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-dsi-to-hdmi.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dev-dsi-to-hdmi.dtb
@@ -209,6 +210,9 @@ k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \
 k3-am625-sk-csi2-tevi-ov5640-dtbs := k3-am625-sk.dtb \
        k3-am62x-sk-csi2-tevi-ov5640.dtbo
 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-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 \
@@ -310,6 +314,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
        k3-am625-sk-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-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-dsi-to-lvds-panel-cap-touch-10inch.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtso
new file mode 100644 (file)
index 0000000..deb74ec
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtso
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex DSI to LVDS Adapter on Verdin DSI_1 with Capacitive Touch Display 10.1"
+ * Used on Dahlia (X17) and Development Board (X48) that expose DSI_1 via an
+ * Samtec LSS-130 connector.
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds
+ * https://www.toradex.com/accessories/capacitive-touch-display-10.1-inch-lvds
+ * https://developer.toradex.com/hardware/accessories/add-ons/dsi-lvds-adapter
+ * https://www.toradex.com/accessories/verdin-dsi-to-lvds-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";
+               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>;
+               power-supply = <&reg_3v3>;
+               /* Verdin PWM_3_DSI (SODIMM 19) */
+               pwms = <&epwm1 0 6666667 PWM_POLARITY_INVERTED>;
+       };
+
+       panel-lvds-bridge {
+               compatible = "logictechno,lt170410-2whc";
+               backlight = <&backlight_pwm3>;
+               power-supply = <&reg_3v3_dsi>;
+
+               port {
+                       panel_lvds_bridge_in: endpoint {
+                               remote-endpoint = <&dsi_lvds_bridge_out>;
+                       };
+               };
+       };
+
+       reg_3v3_dsi: regulator-3v3-dsi {
+               compatible = "regulator-fixed";
+               regulator-max-microvolt = <3300000>;
+               regulator-min-microvolt = <3300000>;
+               regulator-name = "+V3.3_DSI";
+       };
+};
+
+&dsi_bridge {
+       status = "okay";
+};
+
+&dsi_bridge_ports {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       port@1 {
+               reg = <1>;
+
+               dsi_bridge_out: endpoint {
+                       remote-endpoint = <&dsi_lvds_bridge_in>;
+               };
+       };
+};
+
+&dss {
+       status = "okay";
+};
+
+/* Verdin I2C_1 */
+&main_i2c1 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       bridge@2c {
+               compatible = "ti,sn65dsi84";
+               reg = <0x2c>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_dsi1_bkl_en>;
+               /* Verdin GPIO_10_DSI (SODIMM 21) - DSI_1_BKL_EN */
+               enable-gpios = <&main_gpio0 30 GPIO_ACTIVE_HIGH>;
+
+               ports {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       port@0 {
+                               reg = <0>;
+
+                               dsi_lvds_bridge_in: endpoint {
+                                       remote-endpoint = <&dsi_bridge_out>;
+                                       data-lanes = <1 2 3 4>;
+                               };
+                       };
+
+                       port@2 {
+                               reg = <2>;
+
+                               dsi_lvds_bridge_out: endpoint {
+                                       remote-endpoint = <&panel_lvds_bridge_in>;
+                               };
+                       };
+               };
+       };
+
+       touchscreen@4a {
+               compatible = "atmel,maxtouch";
+               reg = <0x4a>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_dsi1_int>, <&pinctrl_i2s_2_bclk_gpio>;
+               /* Verdin GPIO_9_DSI (SODIMM 17) - TOUCH_INT# */
+               interrupt-parent = <&main_gpio1>;
+               interrupts = <49 IRQ_TYPE_EDGE_FALLING>;
+               /* Verdin I2S_2_BCLK (SODIMM 42) - TOUCH_RESET# */
+               reset-gpios = <&main_gpio0 35 GPIO_ACTIVE_LOW>;
+       };
+};