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         vmmc-supply = <&reg_dcdc1>;
  84         bus-width = <4>;
  85         cd-gpios = <&pio 1 4 GPIO_ACTIVE_LOW>; /* PB4 */
  86         status = "okay";
  87 };
  88
  89 &pio {
  90         usb0_id_detect_pin: usb0-id-detect-pin {
  91                 pins = "PH8";
  92                 function = "gpio_in";
  93                 bias-pull-up;
  94         };
  95 };
  96
  97 &r_rsb {
  98         status = "okay";
  99
 100         axp22x: pmic@3a3 {
 101                 compatible = "x-powers,axp223";
 102                 reg = <0x3a3>;
 103                 interrupt-parent = <&nmi_intc>;
 104                 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 105                 eldoin-supply = <&reg_dcdc1>;
 106                 drivevbus-supply = <&reg_vcc5v0>;
 107                 x-powers,drive-vbus-en;
 108         };
 109 };
 110
 111 #include "axp223.dtsi"
 112
 113 &ac_power_supply {
 114         status = "okay";
 115 };
 116
 117 &battery_power_supply {
 118         status = "okay";
 119 };
 120
 121 &reg_aldo1 {
 122         regulator-always-on;
 123         regulator-min-microvolt = <3000000>;
 124         regulator-max-microvolt = <3000000>;
 125         regulator-name = "vcc-io";
 126 };
 127
 128 &reg_aldo2 {
 129         regulator-always-on;
 130         regulator-min-microvolt = <2350000>;
 131         regulator-max-microvolt = <2650000>;
 132         regulator-name = "vdd-dll";
 133 };
 134
 135 &reg_aldo3 {
 136         regulator-always-on;
 137         regulator-min-microvolt = <2700000>;
 138         regulator-max-microvolt = <3300000>;
 139         regulator-name = "vcc-pll-avcc";
 140 };
 141
 142 &reg_dc1sw {
 143         regulator-name = "vcc-lcd";
 144 };
 145
 146 &reg_dc5ldo {
 147         regulator-always-on;
 148         regulator-min-microvolt = <900000>;
 149         regulator-max-microvolt = <1400000>;
 150         regulator-name = "vdd-cpus";
 151 };
 152
 153 &reg_dcdc1 {
 154         regulator-always-on;
 155         regulator-min-microvolt = <3000000>;
 156         regulator-max-microvolt = <3000000>;
 157         regulator-name = "vcc-3v0";
 158 };
 159
 160 &reg_dcdc2 {
 161         regulator-always-on;
 162         regulator-min-microvolt = <900000>;
 163         regulator-max-microvolt = <1400000>;
 164         regulator-name = "vdd-sys";
 165 };
 166
 167 &reg_dcdc3 {
 168         regulator-always-on;
 169         regulator-min-microvolt = <900000>;
 170         regulator-max-microvolt = <1400000>;
 171         regulator-name = "vdd-cpu";
 172 };
 173
 174 &reg_dcdc5 {
 175         regulator-always-on;
 176         regulator-min-microvolt = <1500000>;
 177         regulator-max-microvolt = <1500000>;
 178         regulator-name = "vcc-dram";
 179 };
 180
 181 &reg_dldo1 {
 182         regulator-min-microvolt = <3300000>;
 183         regulator-max-microvolt = <3300000>;
 184         regulator-name = "vcc-wifi";
 185 };
 186
 187 &reg_drivevbus {
 188         regulator-name = "usb0-vbus";
 189         status = "okay";
 190 };
 191
 192 &reg_ldo_io1 {
 193         regulator-min-microvolt = <3300000>;
 194         regulator-max-microvolt = <3300000>;
 195         regulator-name = "vcc-touchscreen";
 196         status = "okay";
 197 };
 198
 199 &reg_rtc_ldo {
 200         regulator-name = "vcc-rtc";
 201 };
 202
 203 &cpu0 {
 204         cpu-supply = <&reg_dcdc2>;
 205 };
 206
 207 &r_uart {
 208         pinctrl-names = "default";
 209         pinctrl-0 = <&r_uart_pins_a>;
 210         status = "okay";
 211 };
 212
 213 &simplefb_lcd {
 214         vcc-lcd-supply = <&reg_dc1sw>;
 215 };
 216
 217 &usb_otg {
 218         dr_mode = "otg";
 219         status = "okay";
 220 };
 221
 222 &usb_power_supply {
 223         status = "okay";
 224 };
 225
 226 &usbphy {
 227         pinctrl-names = "default";
 228         pinctrl-0 = <&usb0_id_detect_pin>;
 229         usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
 230         usb0_vbus_power-supply = <&usb_power_supply>;
 231         usb0_vbus-supply = <&reg_drivevbus>;
 232         status = "okay";
 233 };