1/* 2 * Copyright 2015 Hans de Goede <hdegoede@redhat.com> 3 * 4 * This file is dual-licensed: you can use it either under the terms 5 * of the GPL or the X11 license, at your option. Note that this dual 6 * licensing only applies to this file, and not this project as a 7 * whole. 8 * 9 * a) This file is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of the 12 * License, or (at your option) any later version. 13 * 14 * This file is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * Or, alternatively, 20 * 21 * b) Permission is hereby granted, free of charge, to any person 22 * obtaining a copy of this software and associated documentation 23 * files (the "Software"), to deal in the Software without 24 * restriction, including without limitation the rights to use, 25 * copy, modify, merge, publish, distribute, sublicense, and/or 26 * sell copies of the Software, and to permit persons to whom the 27 * Software is furnished to do so, subject to the following 28 * conditions: 29 * 30 * The above copyright notice and this permission notice shall be 31 * included in all copies or substantial portions of the Software. 32 * 33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 34 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 35 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 36 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 37 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 38 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 39 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 40 * OTHER DEALINGS IN THE SOFTWARE. 41 */ 42#include "sunxi-reference-design-tablet.dtsi" 43 44#include <dt-bindings/interrupt-controller/irq.h> 45#include <dt-bindings/pwm/pwm.h> 46 47/ { 48 aliases { 49 serial0 = &uart1; 50 }; 51 52 backlight: backlight { 53 compatible = "pwm-backlight"; 54 pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>; 55 brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>; 56 default-brightness-level = <8>; 57 /* TODO: backlight uses axp gpio1 as enable pin */ 58 }; 59 60 chosen { 61 stdout-path = "serial0:115200n8"; 62 }; 63}; 64 65&codec { 66 pinctrl-names = "default"; 67 pinctrl-0 = <&codec_pa_pin>; 68 allwinner,pa-gpios = <&pio 6 10 GPIO_ACTIVE_HIGH>; /* PG10 */ 69 status = "okay"; 70}; 71 72&cpu0 { 73 cpu-supply = <®_dcdc2>; 74}; 75 76&ehci0 { 77 status = "okay"; 78}; 79 80&i2c0 { 81 axp209: pmic@34 { 82 reg = <0x34>; 83 interrupts = <0>; 84 }; 85}; 86 87&i2c1 { 88 /* 89 * The gsl1680 is rated at 400KHz and it will not work reliable at 90 * 100KHz, this has been confirmed on multiple different q8 tablets. 91 * All other devices on this bus are also rated for 400KHz. 92 */ 93 clock-frequency = <400000>; 94 95 touchscreen: touchscreen@40 { 96 reg = <0x40>; 97 interrupt-parent = <&pio>; 98 interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; /* EINT11 (PG11) */ 99 pinctrl-names = "default"; 100 pinctrl-0 = <&ts_power_pin>; 101 power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */ 102 /* Tablet dts must provide reg and compatible */ 103 status = "disabled"; 104 }; 105 106 pcf8563: rtc@51 { 107 compatible = "nxp,pcf8563"; 108 reg = <0x51>; 109 }; 110}; 111 112#include "axp209.dtsi" 113 114&ac_power_supply { 115 status = "okay"; 116}; 117 118&battery_power_supply { 119 status = "okay"; 120}; 121 122&lradc { 123 vref-supply = <®_ldo2>; 124}; 125 126&mmc0 { 127 pinctrl-names = "default"; 128 pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>; 129 vmmc-supply = <®_vcc3v0>; 130 bus-width = <4>; 131 cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */ 132 status = "okay"; 133}; 134 135&otg_sram { 136 status = "okay"; 137}; 138 139&pio { 140 codec_pa_pin: codec_pa_pin@0 { 141 pins = "PG10"; 142 function = "gpio_out"; 143 }; 144 145 mmc0_cd_pin: mmc0_cd_pin@0 { 146 pins = "PG0"; 147 function = "gpio_in"; 148 bias-pull-up; 149 }; 150 151 ts_power_pin: ts_power_pin { 152 pins = "PB3"; 153 function = "gpio_out"; 154 drive-strength = <10>; 155 bias-disable; 156 }; 157 158 usb0_vbus_detect_pin: usb0_vbus_detect_pin@0 { 159 pins = "PG1"; 160 function = "gpio_in"; 161 bias-pull-down; 162 }; 163 164 usb0_id_detect_pin: usb0_id_detect_pin@0 { 165 pins = "PG2"; 166 function = "gpio_in"; 167 bias-pull-up; 168 }; 169 170 usb0_vbus_pin_a: usb0_vbus_pin@0 { 171 pins = "PG12"; 172 function = "gpio_out"; 173 }; 174}; 175 176®_dcdc2 { 177 regulator-always-on; 178 regulator-min-microvolt = <1000000>; 179 regulator-max-microvolt = <1500000>; 180 regulator-name = "vdd-cpu"; 181}; 182 183®_dcdc3 { 184 regulator-always-on; 185 regulator-min-microvolt = <1000000>; 186 regulator-max-microvolt = <1400000>; 187 regulator-name = "vdd-int-pll"; 188}; 189 190®_ldo1 { 191 regulator-name = "vdd-rtc"; 192}; 193 194®_ldo2 { 195 regulator-always-on; 196 regulator-min-microvolt = <3000000>; 197 regulator-max-microvolt = <3000000>; 198 regulator-name = "avcc"; 199}; 200 201®_ldo3 { 202 regulator-min-microvolt = <3300000>; 203 regulator-max-microvolt = <3300000>; 204 regulator-name = "vcc-wifi"; 205}; 206 207®_usb0_vbus { 208 gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */ 209 status = "okay"; 210}; 211 212&uart1 { 213 pinctrl-names = "default"; 214 pinctrl-0 = <&uart1_pins_b>; 215 status = "okay"; 216}; 217 218&usb_otg { 219 dr_mode = "otg"; 220 status = "okay"; 221}; 222 223&usb_power_supply { 224 status = "okay"; 225}; 226 227&usbphy { 228 pinctrl-names = "default"; 229 pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>; 230 usb0_id_det-gpio = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */ 231 usb0_vbus_det-gpio = <&pio 6 1 GPIO_ACTIVE_HIGH>; /* PG1 */ 232 usb0_vbus_power-supply = <&usb_power_supply>; 233 usb0_vbus-supply = <®_usb0_vbus>; 234 usb1_vbus-supply = <®_ldo3>; 235 status = "okay"; 236}; 237