From c428a42a0caea3b6c17e460ba32dedb707f264f6 Mon Sep 17 00:00:00 2001 From: Vitor Soares Date: Tue, 2 Jun 2026 12:51:25 +0100 Subject: [PATCH] arm64: dts: ti: k3-am69-aquila: Add 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. Used on Development Board (J44), where DSI_1 is exposed via a Samtec LSS-130 connector. The adapter 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 Signed-off-by: Vitor Soares Reviewed-by: Francesco Dolcini Link: https://patch.msgid.link/20260602115123.1324474-11-ivitro@gmail.com Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/Makefile | 5 + ...la-dsi-to-lvds-panel-cap-touch-10inch.dtso | 142 ++++++++++++++++++ 2 files changed, 147 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index fccd96354464..9619d033301e 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -197,6 +197,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-clover.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dev.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dev-dsi-to-hdmi.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dsi-to-hdmi.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-sk-pcie0-ep.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb @@ -311,6 +312,9 @@ k3-am68-sk-base-board-csi2-dual-imx219-dtbs := k3-am68-sk-base-board.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-am68-sk-base-board-pcie1-ep-dtbs := k3-am68-sk-base-board.dtb \ k3-am68-sk-base-board-pcie1-ep.dtbo +k3-am69-aquila-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := \ + k3-am69-aquila-dev.dtb \ + k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtbo k3-am69-sk-csi2-dual-imx219-dtbs := k3-am69-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-am69-sk-pcie0-ep-dtbs := k3-am69-sk.dtb \ @@ -394,6 +398,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am68-phyboard-izar-peb-av-15.dtb \ k3-am68-sk-base-board-csi2-dual-imx219.dtb \ k3-am68-sk-base-board-pcie1-ep.dtb \ + k3-am69-aquila-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb \ k3-am69-sk-csi2-dual-imx219.dtb \ k3-am69-sk-pcie0-ep.dtb \ k3-j7200-evm-pcie1-ep.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtso b/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtso new file mode 100644 index 000000000000..0cb662e023d4 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtso @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright (c) Toradex + * + * Toradex DSI to LVDS Adapter on Aquila DSI_1 with Capacitive Touch Display 10.1" + * Used on Development Board (J44), DSI_1 is exposed via a 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 +#include +#include + +&{/} { + backlight_pwm3: backlight-pwm3 { + compatible = "pwm-backlight"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_19_dsi_1>; + brightness-levels = <0 45 63 88 119 158 203 255>; + default-brightness-level = <4>; + /* Aquila GPIO_19_DSI_1 (AQUILA B44) */ + enable-gpios = <&main_gpio0 13 GPIO_ACTIVE_HIGH>; + /* Aquila PWM_3_DSI (AQUILA B46) */ + pwms = <&main_ehrpwm5 0 6666667 PWM_POLARITY_INVERTED>; + }; + + panel-lvds-bridge { + compatible = "logictechno,lt170410-2whc"; + backlight = <&backlight_pwm3>; + power-supply = <®_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"; + }; +}; + +&dphy_tx0 { + status = "okay"; +}; + +&dsi0 { + status = "okay"; +}; + +&dsi0_ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + dsi0_out: endpoint { + remote-endpoint = <&dsi_lvds_bridge_in>; + }; + }; + + port@1 { + reg = <1>; + + dsi0_in: endpoint { + remote-endpoint = <&dpi2_out>; + }; + }; +}; + +&dss_ports { + #address-cells = <1>; + #size-cells = <0>; + + port@2 { + reg = <2>; + + dpi2_out: endpoint { + remote-endpoint = <&dsi0_in>; + }; + }; +}; + +&i2c_dsi_0 { + #address-cells = <1>; + #size-cells = <0>; + + bridge@2c { + compatible = "ti,sn65dsi84"; + reg = <0x2c>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_20_dsi_1>; + /* Aquila GPIO_20_DSI_1 (AQUILA B45) */ + enable-gpios = <&main_gpio0 18 GPIO_ACTIVE_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + dsi_lvds_bridge_in: endpoint { + remote-endpoint = <&dsi0_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_gpio_17_dsi_1>, <&pinctrl_gpio_18_dsi_1>; + /* Aquila GPIO_17_DSI_1 (AQUILA B42) */ + interrupt-parent = <&main_gpio0>; + interrupts = <12 IRQ_TYPE_EDGE_FALLING>; + /* Aquila GPIO_18_DSI_1 (AQUILA B43) */ + reset-gpios = <&main_gpio0 31 GPIO_ACTIVE_LOW>; + }; +};