arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi

   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/pwm/pwm.h>
  45
  46 / {
  47         aliases {
  48                 serial0 = &r_uart;
  49         };
  50
  51         backlight: backlight {
  52                 compatible = "pwm-backlight";
  53                 pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
  54                 brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
  55                 default-brightness-level = <8>;
  56                 enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
  57         };
  58
  59         chosen {
  60                 stdout-path = "serial0:115200n8";
  61         };
  62 };
  63
  64 &i2c0 {
  65         /*
  66          * The gsl1680 is rated at 400KHz and it will not work reliable at
  67          * 100KHz, this has been confirmed on multiple different q8 tablets.
  68          * The gsl1680 is the only device on this bus.
  69          */
  70         clock-frequency = <400000>;
  71
  72         touchscreen: touchscreen@40 {
  73                 reg = <0x40>;
  74                 interrupt-parent = <&pio>;
  75                 interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
  76                 power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
  77                 /* Tablet dts must provide reg and compatible */
  78                 status = "disabled";
  79         };
  80 };
  81
  82 &mmc0 {
  83         pinctrl-names = "default";
  84         pinctrl-0 = <&mmc0_pins_a>;
  85         vmmc-supply = <&reg_dcdc1>;
  86         bus-width = <4>;
  87         cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
  88         status = "okay";
  89 };
  90
  91 &pio {
  92         usb0_id_detect_pin: usb0_id_detect_pin@0 {
  93                 pins = "PH8";
  94                 function = "gpio_in";
  95                 bias-pull-up;
  96         };
  97 };
  98
  99 &r_rsb {
 100         status = "okay";
 101
 102         axp22x: pmic@3a3 {
 103                 compatible = "x-powers,axp223";
 104                 reg = <0x3a3>;
 105                 interrupt-parent = <&nmi_intc>;
 106                 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 107                 eldoin-supply = <&reg_dcdc1>;
 108                 drivevbus-supply = <&reg_vcc5v0>;
 109                 x-powers,drive-vbus-en;
 110         };
 111 };
 112
 113 #include "axp223.dtsi"
 114
 115 &ac_power_supply {
 116         status = "okay";
 117 };
 118
 119 &battery_power_supply {
 120         status = "okay";
 121 };
 122
 123 &reg_aldo1 {
 124         regulator-always-on;
 125         regulator-min-microvolt = <3000000>;
 126         regulator-max-microvolt = <3000000>;
 127         regulator-name = "vcc-io";
 128 };
 129
 130 &reg_aldo2 {
 131         regulator-always-on;
 132         regulator-min-microvolt = <2350000>;
 133         regulator-max-microvolt = <2650000>;
 134         regulator-name = "vdd-dll";
 135 };
 136
 137 &reg_aldo3 {
 138         regulator-always-on;
 139         regulator-min-microvolt = <2700000>;
 140         regulator-max-microvolt = <3300000>;
 141         regulator-name = "vcc-pll-avcc";
 142 };
 143
 144 &reg_dc1sw {
 145         regulator-name = "vcc-lcd";
 146 };
 147
 148 &reg_dc5ldo {
 149         regulator-always-on;
 150         regulator-min-microvolt = <900000>;
 151         regulator-max-microvolt = <1400000>;
 152         regulator-name = "vdd-cpus";
 153 };
 154
 155 &reg_dcdc1 {
 156         regulator-always-on;
 157         regulator-min-microvolt = <3000000>;
 158         regulator-max-microvolt = <3000000>;
 159         regulator-name = "vcc-3v0";
 160 };
 161
 162 &reg_dcdc2 {
 163         regulator-always-on;
 164         regulator-min-microvolt = <900000>;
 165         regulator-max-microvolt = <1400000>;
 166         regulator-name = "vdd-sys";
 167 };
 168
 169 &reg_dcdc3 {
 170         regulator-always-on;
 171         regulator-min-microvolt = <900000>;
 172         regulator-max-microvolt = <1400000>;
 173         regulator-name = "vdd-cpu";
 174 };
 175
 176 &reg_dcdc5 {
 177         regulator-always-on;
 178         regulator-min-microvolt = <1500000>;
 179         regulator-max-microvolt = <1500000>;
 180         regulator-name = "vcc-dram";
 181 };
 182
 183 &reg_dldo1 {
 184         regulator-min-microvolt = <3300000>;
 185         regulator-max-microvolt = <3300000>;
 186         regulator-name = "vcc-wifi";
 187 };
 188
 189 &reg_drivevbus {
 190         regulator-name = "usb0-vbus";
 191         status = "okay";
 192 };
 193
 194 &reg_ldo_io1 {
 195         regulator-min-microvolt = <3300000>;
 196         regulator-max-microvolt = <3300000>;
 197         regulator-name = "vcc-touchscreen";
 198         status = "okay";
 199 };
 200
 201 &reg_rtc_ldo {
 202         regulator-name = "vcc-rtc";
 203 };
 204
 205 &cpu0 {
 206         cpu-supply = <&reg_dcdc2>;
 207 };
 208
 209 &r_uart {
 210         pinctrl-names = "default";
 211         pinctrl-0 = <&r_uart_pins_a>;
 212         status = "okay";
 213 };
 214
 215 &simplefb_lcd {
 216         vcc-lcd-supply = <&reg_dc1sw>;
 217 };
 218
 219 &usb_otg {
 220         dr_mode = "otg";
 221         status = "okay";
 222 };
 223
 224 &usb_power_supply {
 225         status = "okay";
 226 };
 227
 228 &usbphy {
 229         pinctrl-names = "default";
 230         pinctrl-0 = <&usb0_id_detect_pin>;
 231         usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
 232         usb0_vbus_power-supply = <&usb_power_supply>;
 233         usb0_vbus-supply = <&reg_drivevbus>;
 234         status = "okay";
 235 };