arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts

   1 /*
   2  * Copyright 2016 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
  43 /dts-v1/;
  44 #include "sun8i-a23.dtsi"
  45 #include "sunxi-common-regulators.dtsi"
  46
  47 #include <dt-bindings/gpio/gpio.h>
  48 #include <dt-bindings/input/input.h>
  49 #include <dt-bindings/pinctrl/sun4i-a10.h>
  50 #include <dt-bindings/pwm/pwm.h>
  51
  52 / {
  53         model = "Polaroid MID2809PXE04 tablet";
  54         compatible = "polaroid,mid2809pxe04", "allwinner,sun8i-a23";
  55
  56         aliases {
  57                 serial0 = &r_uart;
  58         };
  59
  60         backlight: backlight {
  61                 compatible = "pwm-backlight";
  62                 pinctrl-names = "default";
  63                 pinctrl-0 = <&bl_en_pin_mid2809>;
  64                 pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
  65                 brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
  66                 default-brightness-level = <8>;
  67                 enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
  68         };
  69
  70         chosen {
  71                 stdout-path = "serial0:115200n8";
  72         };
  73 };
  74
  75 &ehci0 {
  76         status = "okay";
  77 };
  78
  79 &i2c0 {
  80         pinctrl-names = "default";
  81         pinctrl-0 = <&i2c0_pins_a>;
  82         status = "okay";
  83 };
  84
  85 &i2c1 {
  86         pinctrl-names = "default";
  87         pinctrl-0 = <&i2c1_pins_a>;
  88         status = "okay";
  89 };
  90
  91 &lradc {
  92         vref-supply = <&reg_vcc3v0>;
  93         status = "okay";
  94
  95         button@200 {
  96                 label = "Volume Up";
  97                 linux,code = <KEY_VOLUMEUP>;
  98                 channel = <0>;
  99                 voltage = <200000>;
 100         };
 101
 102         button@400 {
 103                 label = "Volume Down";
 104                 linux,code = <KEY_VOLUMEDOWN>;
 105                 channel = <0>;
 106                 voltage = <400000>;
 107         };
 108 };
 109
 110 &mmc0 {
 111         pinctrl-names = "default";
 112         pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_mid2809>;
 113         vmmc-supply = <&reg_dcdc1>;
 114         bus-width = <4>;
 115         cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
 116         cd-inverted;
 117         status = "okay";
 118 };
 119
 120 &pio {
 121         bl_en_pin_mid2809: bl_en_pin@0 {
 122                 allwinner,pins = "PH6";
 123                 allwinner,function = "gpio_in";
 124                 allwinner,drive = <SUN4I_PINCTRL_10_MA>;
 125                 allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
 126         };
 127
 128         mmc0_cd_pin_mid2809: mmc0_cd_pin@0 {
 129                 allwinner,pins = "PB4";
 130                 allwinner,function = "gpio_in";
 131                 allwinner,drive = <SUN4I_PINCTRL_10_MA>;
 132                 allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
 133         };
 134 };
 135
 136 &pwm {
 137         pinctrl-names = "default";
 138         pinctrl-0 = <&pwm0_pins>;
 139         status = "okay";
 140 };
 141
 142 &r_rsb {
 143         status = "okay";
 144
 145         axp22x: pmic@3a3 {
 146                 compatible = "x-powers,axp223";
 147                 reg = <0x3a3>;
 148                 interrupt-parent = <&nmi_intc>;
 149                 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 150                 eldoin-supply = <&reg_dcdc1>;
 151         };
 152 };
 153
 154 &r_uart {
 155         pinctrl-names = "default";
 156         pinctrl-0 = <&r_uart_pins_a>;
 157         status = "okay";
 158 };
 159
 160 #include "axp22x.dtsi"
 161
 162 &reg_aldo1 {
 163         regulator-always-on;
 164         regulator-min-microvolt = <3000000>;
 165         regulator-max-microvolt = <3000000>;
 166         regulator-name = "vcc-io";
 167 };
 168
 169 &reg_aldo2 {
 170         regulator-always-on;
 171         regulator-min-microvolt = <2350000>;
 172         regulator-max-microvolt = <2650000>;
 173         regulator-name = "vdd-dll";
 174 };
 175
 176 &reg_aldo3 {
 177         regulator-always-on;
 178         regulator-min-microvolt = <2700000>;
 179         regulator-max-microvolt = <3300000>;
 180         regulator-name = "vcc-pll-avcc";
 181 };
 182
 183 &reg_dc1sw {
 184         regulator-name = "vcc-lcd";
 185 };
 186
 187 &reg_dc5ldo {
 188         regulator-always-on;
 189         regulator-min-microvolt = <900000>;
 190         regulator-max-microvolt = <1400000>;
 191         regulator-name = "vdd-cpus";
 192 };
 193
 194 &reg_dcdc1 {
 195         regulator-always-on;
 196         regulator-min-microvolt = <3000000>;
 197         regulator-max-microvolt = <3000000>;
 198         regulator-name = "vcc-3v0";
 199 };
 200
 201 &reg_dcdc2 {
 202         regulator-always-on;
 203         regulator-min-microvolt = <900000>;
 204         regulator-max-microvolt = <1400000>;
 205         regulator-name = "vdd-sys";
 206 };
 207
 208 &reg_dcdc3 {
 209         regulator-always-on;
 210         regulator-min-microvolt = <900000>;
 211         regulator-max-microvolt = <1400000>;
 212         regulator-name = "vdd-cpu";
 213 };
 214
 215 &reg_dcdc5 {
 216         regulator-always-on;
 217         regulator-min-microvolt = <1500000>;
 218         regulator-max-microvolt = <1500000>;
 219         regulator-name = "vcc-dram";
 220 };
 221
 222 &reg_rtc_ldo {
 223         regulator-name = "vcc-rtc";
 224 };
 225
 226 &simplefb_lcd {
 227         vcc-lcd-supply = <&reg_dc1sw>;
 228 };
 229
 230 /*
 231  * FIXME for now we only support host mode and rely on u-boot to have
 232  * turned on Vbus which is controlled by the axp223 pmic on the board.
 233  *
 234  * Once we have axp223 support we should switch to fully supporting otg.
 235  */
 236 &usb_otg {
 237         dr_mode = "host";
 238         status = "okay";
 239 };
 240
 241 &usbphy {
 242         status = "okay";
 243 };