arch/arm/boot/dts/da850-lego-ev3.dts

   1 /*
   2  * Device tree for LEGO MINDSTORMS EV3
   3  *
   4  * Copyright (C) 2017 David Lechner <david@lechnology.com>
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation, version 2.
   9  */
  10
  11 /dts-v1/;
  12 #include <dt-bindings/gpio/gpio.h>
  13 #include <dt-bindings/input/linux-event-codes.h>
  14 #include <dt-bindings/pwm/pwm.h>
  15
  16 #include "da850.dtsi"
  17
  18 / {
  19         compatible = "lego,ev3", "ti,da850";
  20         model = "LEGO MINDSTORMS EV3";
  21
  22         aliases {
  23                 serial1 = &serial1;
  24         };
  25
  26         memory@c0000000 {
  27                 device_type = "memory";
  28                 reg = <0xc0000000 0x04000000>;
  29         };
  30
  31         /*
  32          * The buttons on the EV3 are mapped to keyboard keys.
  33          */
  34         gpio_keys {
  35                 compatible = "gpio-keys";
  36                 #address-cells = <1>;
  37                 #size-cells = <0>;
  38                 label = "EV3 Brick Buttons";
  39                 pinctrl-names = "default";
  40                 pinctrl-0 = <&button_pins>, <&button_bias>;
  41
  42                 center {
  43                         label = "Center";
  44                         linux,code = <KEY_ENTER>;
  45                         gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
  46                 };
  47
  48                 left {
  49                         label = "Left";
  50                         linux,code = <KEY_LEFT>;
  51                         gpios = <&gpio 102 GPIO_ACTIVE_HIGH>;
  52                 };
  53
  54                 back {
  55                         label = "Back";
  56                         linux,code = <KEY_BACKSPACE>;
  57                         gpios = <&gpio 106 GPIO_ACTIVE_HIGH>;
  58                 };
  59
  60                 right {
  61                         label = "Right";
  62                         linux,code = <KEY_RIGHT>;
  63                         gpios = <&gpio 124 GPIO_ACTIVE_HIGH>;
  64                 };
  65
  66                 down {
  67                         label = "Down";
  68                         linux,code = <KEY_DOWN>;
  69                         gpios = <&gpio 126 GPIO_ACTIVE_HIGH>;
  70                 };
  71
  72                 up {
  73                         label = "Up";
  74                         linux,code = <KEY_UP>;
  75                         gpios = <&gpio 127 GPIO_ACTIVE_HIGH>;
  76                 };
  77         };
  78
  79         /*
  80          * The EV3 has two built-in bi-color LEDs behind the buttons.
  81          */
  82         leds {
  83                 compatible = "gpio-leds";
  84                 pinctrl-names = "default";
  85                 pinctrl-0 = <&led_pins>;
  86
  87                 left_green {
  88                         label = "led0:green:brick-status";
  89                         /* GP6[13] */
  90                         gpios = <&gpio 103 GPIO_ACTIVE_HIGH>;
  91                         linux,default-trigger = "default-on";
  92                 };
  93
  94                 right_red {
  95                         label = "led1:red:brick-status";
  96                         /* GP6[7] */
  97                         gpios = <&gpio 108 GPIO_ACTIVE_HIGH>;
  98                         linux,default-trigger = "default-on";
  99                 };
 100
 101                 left_red {
 102                         label = "led0:red:brick-status";
 103                         /* GP6[12] */
 104                         gpios = <&gpio 109 GPIO_ACTIVE_HIGH>;
 105                         linux,default-trigger = "default-on";
 106                 };
 107
 108                 right_green {
 109                         label = "led1:green:brick-status";
 110                         /* GP6[14] */
 111                         gpios = <&gpio 110 GPIO_ACTIVE_HIGH>;
 112                         linux,default-trigger = "default-on";
 113                 };
 114         };
 115
 116         /*
 117          * The EV3 is powered down by turning off the main 5V supply.
 118          */
 119         gpio-poweroff {
 120                 compatible = "gpio-poweroff";
 121                 gpios = <&gpio 107 GPIO_ACTIVE_LOW>;
 122                 pinctrl-names = "default";
 123                 pinctrl-0 = <&system_power_pin>;
 124         };
 125
 126         /*
 127          * This is a 5V current limiting regulator that is shared by USB,
 128          * the sensor (input) ports, the motor (output) ports and the A/DC.
 129          */
 130         vcc5v: regulator1 {
 131                 pinctrl-names = "default";
 132                 pinctrl-0 = <&vcc5v_pins>;
 133                 compatible = "regulator-fixed";
 134                 regulator-name = "vcc5v";
 135                 regulator-min-microvolt = <5000000>;
 136                 regulator-max-microvolt = <5000000>;
 137                 gpio = <&gpio 101 0>;
 138                 over-current-gpios = <&gpio 99 GPIO_ACTIVE_LOW>;
 139                 enable-active-high;
 140                 regulator-boot-on;
 141         };
 142 };
 143
 144 &pmx_core {
 145         status = "okay";
 146
 147         spi0_cs3_pin: pinmux_spi0_cs3_pin {
 148                 pinctrl-single,bits = <
 149                         /* CS3 */
 150                         0xc 0x01000000 0x0f000000
 151                 >;
 152         };
 153
 154         mmc0_cd_pin: pinmux_mmc0_cd {
 155                 pinctrl-single,bits = <
 156                         /* GP5[14] */
 157                         0x2C 0x00000080 0x000000f0
 158                 >;
 159         };
 160
 161         button_pins: pinmux_button_pins {
 162                 pinctrl-single,bits = <
 163                         /* GP1[13] */
 164                         0x8 0x00000800 0x00000f00
 165                         /* GP6[10] */
 166                         0x34 0x00800000 0x00f00000
 167                         /* GP6[6] */
 168                         0x38 0x00000080 0x000000f0
 169                         /* GP7[12], GP7[14], GP7[15] */
 170                         0x40 0x00808800 0x00f0ff00
 171                 >;
 172         };
 173
 174         led_pins: pinmux_led_pins {
 175                 pinctrl-single,bits = <
 176                         /* GP6[12], GP6[13], GP6[14] */
 177                         0x34 0x00008880 0x0000fff0
 178                         /* GP6[7] */
 179                         0x38 0x00000008 0x0000000f
 180                 >;
 181         };
 182
 183         system_power_pin: pinmux_system_power {
 184                 pinctrl-single,bits = <
 185                         /* GP6[11] */
 186                         0x34 0x00080000 0x000f0000
 187                 >;
 188         };
 189
 190         vcc5v_pins: pinmux_vcc5v {
 191                 pinctrl-single,bits = <
 192                         /* GP6[5] */
 193                         0x40 0x00000080 0x000000f0
 194                         /* GP6[3] */
 195                         0x4c 0x00008000 0x0000f000
 196                 >;
 197         };
 198 };
 199
 200 &pinconf {
 201         status = "okay";
 202
 203         /* Buttons have external pulldown resistors */
 204         button_bias: button-bias-groups {
 205                 disable {
 206                         groups = "cp5", "cp24", "cp25", "cp28";
 207                         bias-disable;
 208                 };
 209         };
 210 };
 211
 212 /* Input port 1 */
 213 &serial1 {
 214         status = "okay";
 215         pinctrl-names = "default";
 216         pinctrl-0 = <&serial1_rxtx_pins>;
 217 };
 218
 219 &rtc0 {
 220         status = "okay";
 221 };
 222
 223 &i2c0 {
 224         status = "okay";
 225         clock-frequency = <400000>;
 226         pinctrl-names = "default";
 227         pinctrl-0 = <&i2c0_pins>;
 228
 229         /*
 230          * EEPROM contains the first stage bootloader, HW ID and Bluetooth MAC.
 231          */
 232         eeprom@50 {
 233                 compatible = "microchip,24c128";
 234                 pagesize = <64>;
 235                 read-only;
 236                 reg = <0x50>;
 237         };
 238 };
 239
 240 &wdt {
 241         status = "okay";
 242 };
 243
 244 &mmc0 {
 245         status = "okay";
 246         max-frequency = <50000000>;
 247         bus-width = <4>;
 248         cd-gpios = <&gpio 94 GPIO_ACTIVE_LOW>;
 249         pinctrl-names = "default";
 250         pinctrl-0 = <&mmc0_pins>, <&mmc0_cd_pin>;
 251 };
 252
 253 &spi0 {
 254         status = "okay";
 255         pinctrl-names = "default";
 256         pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>, <&spi0_cs3_pin>;
 257
 258         flash@0 {
 259                 compatible = "n25q128a13", "jedec,spi-nor";
 260                 reg = <0>;
 261                 spi-max-frequency = <50000000>;
 262                 ti,spi-wdelay = <8>;
 263
 264                 /* Partitions are based on the official firmware from LEGO */
 265                 partitions {
 266                         compatible = "fixed-partitions";
 267                         #address-cells = <1>;
 268                         #size-cells = <1>;
 269
 270                         partition@0 {
 271                                 label = "U-Boot";
 272                                 reg = <0 0x40000>;
 273                         };
 274
 275                         partition@40000 {
 276                                 label = "U-Boot Env";
 277                                 reg = <0x40000 0x10000>;
 278                         };
 279
 280                         partition@50000 {
 281                                 label = "Kernel";
 282                                 reg = <0x50000 0x200000>;
 283                         };
 284
 285                         partition@250000 {
 286                                 label = "Filesystem";
 287                                 reg = <0x250000 0xa50000>;
 288                         };
 289
 290                         partition@cb0000 {
 291                                 label = "Storage";
 292                                 reg = <0xcb0000 0x2f0000>;
 293                         };
 294                 };
 295         };
 296 };
 297
 298 &gpio {
 299         status = "okay";
 300 };
 301
 302 &usb_phy {
 303         status = "okay";
 304 };
 305
 306 &usb0 {
 307         status = "okay";
 308 };
 309
 310 &usb1 {
 311         status = "okay";
 312         vbus-supply = <&vcc5v>;
 313 };