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                 pinctrl-names = "default";
  54                 pinctrl-0 = <&bl_en_pin>;
  55                 pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
  56                 brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
  57                 default-brightness-level = <8>;
  58                 enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
  59         };
  60
  61         chosen {
  62                 stdout-path = "serial0:115200n8";
  63         };
  64 };
  65
  66 &i2c0 {
  67         /*
  68          * The gsl1680 is rated at 400KHz and it will not work reliable at
  69          * 100KHz, this has been confirmed on multiple different q8 tablets.
  70          * The gsl1680 is the only device on this bus.
  71          */
  72         clock-frequency = <400000>;
  73
  74         touchscreen: touchscreen@0 {
  75                 interrupt-parent = <&pio>;
  76                 interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */
  77                 pinctrl-names = "default";
  78                 pinctrl-0 = <&ts_power_pin>;
  79                 power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */
  80                 /* Tablet dts must provide reg and compatible */
  81                 status = "disabled";
  82         };
  83 };
  84
  85 &mmc0 {
  86         pinctrl-names = "default";
  87         pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>;
  88         vmmc-supply = <&reg_dcdc1>;
  89         bus-width = <4>;
  90         cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
  91         cd-inverted;
  92         status = "okay";
  93 };
  94
  95 &pio {
  96         bl_en_pin: bl_en_pin@0 {
  97                 pins = "PH6";
  98                 function = "gpio_in";
  99         };
 100
 101         mmc0_cd_pin: mmc0_cd_pin@0 {
 102                 pins = "PB4";
 103                 function = "gpio_in";
 104                 bias-pull-up;
 105         };
 106
 107         ts_power_pin: ts_power_pin@0 {
 108                 pins = "PH1";
 109                 function = "gpio_out";
 110         };
 111
 112         usb0_id_detect_pin: usb0_id_detect_pin@0 {
 113                 pins = "PH8";
 114                 function = "gpio_in";
 115                 bias-pull-up;
 116         };
 117 };
 118
 119 &r_rsb {
 120         status = "okay";
 121
 122         axp22x: pmic@3a3 {
 123                 compatible = "x-powers,axp223";
 124                 reg = <0x3a3>;
 125                 interrupt-parent = <&nmi_intc>;
 126                 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 127                 eldoin-supply = <&reg_dcdc1>;
 128                 drivevbus-supply = <&reg_vcc5v0>;
 129                 x-powers,drive-vbus-en;
 130         };
 131 };
 132
 133 #include "axp223.dtsi"
 134
 135 &reg_aldo1 {
 136         regulator-always-on;
 137         regulator-min-microvolt = <3000000>;
 138         regulator-max-microvolt = <3000000>;
 139         regulator-name = "vcc-io";
 140 };
 141
 142 &reg_aldo2 {
 143         regulator-always-on;
 144         regulator-min-microvolt = <2350000>;
 145         regulator-max-microvolt = <2650000>;
 146         regulator-name = "vdd-dll";
 147 };
 148
 149 &reg_aldo3 {
 150         regulator-always-on;
 151         regulator-min-microvolt = <2700000>;
 152         regulator-max-microvolt = <3300000>;
 153         regulator-name = "vcc-pll-avcc";
 154 };
 155
 156 &reg_dc1sw {
 157         regulator-name = "vcc-lcd";
 158 };
 159
 160 &reg_dc5ldo {
 161         regulator-always-on;
 162         regulator-min-microvolt = <900000>;
 163         regulator-max-microvolt = <1400000>;
 164         regulator-name = "vdd-cpus";
 165 };
 166
 167 &reg_dcdc1 {
 168         regulator-always-on;
 169         regulator-min-microvolt = <3000000>;
 170         regulator-max-microvolt = <3000000>;
 171         regulator-name = "vcc-3v0";
 172 };
 173
 174 &reg_dcdc2 {
 175         regulator-always-on;
 176         regulator-min-microvolt = <900000>;
 177         regulator-max-microvolt = <1400000>;
 178         regulator-name = "vdd-sys";
 179 };
 180
 181 &reg_dcdc3 {
 182         regulator-always-on;
 183         regulator-min-microvolt = <900000>;
 184         regulator-max-microvolt = <1400000>;
 185         regulator-name = "vdd-cpu";
 186 };
 187
 188 &reg_dcdc5 {
 189         regulator-always-on;
 190         regulator-min-microvolt = <1500000>;
 191         regulator-max-microvolt = <1500000>;
 192         regulator-name = "vcc-dram";
 193 };
 194
 195 &reg_dldo1 {
 196         regulator-min-microvolt = <3300000>;
 197         regulator-max-microvolt = <3300000>;
 198         regulator-name = "vcc-wifi";
 199 };
 200
 201 &reg_drivevbus {
 202         regulator-name = "usb0-vbus";
 203         status = "okay";
 204 };
 205
 206 &reg_ldo_io1 {
 207         regulator-min-microvolt = <3300000>;
 208         regulator-max-microvolt = <3300000>;
 209         regulator-name = "vcc-touchscreen";
 210         status = "okay";
 211 };
 212
 213 &reg_rtc_ldo {
 214         regulator-name = "vcc-rtc";
 215 };
 216
 217 &cpu0 {
 218         cpu-supply = <&reg_dcdc2>;
 219 };
 220
 221 &r_uart {
 222         pinctrl-names = "default";
 223         pinctrl-0 = <&r_uart_pins_a>;
 224         status = "okay";
 225 };
 226
 227 &simplefb_lcd {
 228         vcc-lcd-supply = <&reg_dc1sw>;
 229 };
 230
 231 &usb_otg {
 232         dr_mode = "otg";
 233         status = "okay";
 234 };
 235
 236 &usb_power_supply {
 237         status = "okay";
 238 };
 239
 240 &usbphy {
 241         pinctrl-names = "default";
 242         pinctrl-0 = <&usb0_id_detect_pin>;
 243         usb0_id_det-gpio = <&pio 7 8 GPIO_ACTIVE_HIGH>; /* PH8 */
 244         usb0_vbus_power-supply = <&usb_power_supply>;
 245         usb0_vbus-supply = <&reg_drivevbus>;
 246         status = "okay";
 247 };