1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2/* 3 * Device Tree Overlay for the RPi Display 2 MIPI DSI panel connected 4 * to J4:DSI on R-Car V4H ES3.0 Sparrow Hawk board 5 * 6 * Copyright (C) 2025 Marek Vasut <marek.vasut+renesas@mailbox.org> 7 */ 8 9/dts-v1/; 10/plugin/; 11 12#include <dt-bindings/gpio/gpio.h> 13 14&{/} { 15 display_bl: backlight { 16 compatible = "pwm-backlight"; 17 pwms = <&mcu 0 255 0>; 18 }; 19 20 reg_display: regulator-display { 21 compatible = "regulator-fixed"; 22 regulator-name = "rpi-display"; 23 regulator-min-microvolt = <5000000>; 24 regulator-max-microvolt = <5000000>; 25 }; 26 27 reg_dsi_touch: regulator-dsi-touch { 28 compatible = "regulator-fixed"; 29 gpio = <&mcu 1 GPIO_ACTIVE_HIGH>; 30 regulator-name = "rpi-touch"; 31 regulator-min-microvolt = <3300000>; 32 regulator-max-microvolt = <3300000>; 33 startup-delay-us = <50000>; 34 enable-active-high; 35 }; 36}; 37 38&i2c0_mux3 { 39 #address-cells = <1>; 40 #size-cells = <0>; 41 42 mcu: gpio@45 { 43 compatible = "raspberrypi,touchscreen-panel-regulator-v2"; 44 reg = <0x45>; 45 gpio-controller; 46 #gpio-cells = <2>; 47 #pwm-cells = <3>; 48 }; 49 50 touchscreen@5d { 51 compatible = "goodix,gt911"; 52 reg = <0x5d>; 53 AVDD28-supply = <®_dsi_touch>; 54 touchscreen-size-x = <720>; 55 touchscreen-size-y = <1280>; 56 }; 57}; 58 59&dsi0 { 60 #address-cells = <1>; 61 #size-cells = <0>; 62 status = "okay"; 63 64 ports { 65 #address-cells = <1>; 66 #size-cells = <0>; 67 68 port@1 { 69 reg = <1>; 70 71 dsi0_out: endpoint { 72 remote-endpoint = <&panel_in>; 73 data-lanes = <1 2>; 74 }; 75 }; 76 }; 77 78 panel: panel@0 { 79 reg = <0>; 80 backlight = <&display_bl>; 81 power-supply = <®_display>; 82 reset-gpios = <&mcu 0 GPIO_ACTIVE_LOW>; 83 84 port { 85 panel_in: endpoint { 86 remote-endpoint = <&dsi0_out>; 87 }; 88 }; 89 }; 90}; 91