diff options
Diffstat (limited to 'arch/arm/boot/dts/da850-lego-ev3.dts')
| -rw-r--r-- | arch/arm/boot/dts/da850-lego-ev3.dts | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts new file mode 100644 index 000000000000..112ec92064ce --- /dev/null +++ b/arch/arm/boot/dts/da850-lego-ev3.dts @@ -0,0 +1,313 @@ +/* + * Device tree for LEGO MINDSTORMS EV3 + * + * Copyright (C) 2017 David Lechner <david@lechnology.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, version 2. + */ + +/dts-v1/; +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/input/linux-event-codes.h> +#include <dt-bindings/pwm/pwm.h> + +#include "da850.dtsi" + +/ { + compatible = "lego,ev3", "ti,da850"; + model = "LEGO MINDSTORMS EV3"; + + aliases { + serial1 = &serial1; + }; + + memory@c0000000 { + device_type = "memory"; + reg = <0xc0000000 0x04000000>; + }; + + /* + * The buttons on the EV3 are mapped to keyboard keys. + */ + gpio_keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + label = "EV3 Brick Buttons"; + pinctrl-names = "default"; + pinctrl-0 = <&button_pins>, <&button_bias>; + + center { + label = "Center"; + linux,code = <KEY_ENTER>; + gpios = <&gpio 29 GPIO_ACTIVE_HIGH>; + }; + + left { + label = "Left"; + linux,code = <KEY_LEFT>; + gpios = <&gpio 102 GPIO_ACTIVE_HIGH>; + }; + + back { + label = "Back"; + linux,code = <KEY_BACKSPACE>; + gpios = <&gpio 106 GPIO_ACTIVE_HIGH>; + }; + + right { + label = "Right"; + linux,code = <KEY_RIGHT>; + gpios = <&gpio 124 GPIO_ACTIVE_HIGH>; + }; + + down { + label = "Down"; + linux,code = <KEY_DOWN>; + gpios = <&gpio 126 GPIO_ACTIVE_HIGH>; + }; + + up { + label = "Up"; + linux,code = <KEY_UP>; + gpios = <&gpio 127 GPIO_ACTIVE_HIGH>; + }; + }; + + /* + * The EV3 has two built-in bi-color LEDs behind the buttons. + */ + leds { + compatible = "gpio-leds"; + pinctrl-names = "default"; + pinctrl-0 = <&led_pins>; + + left_green { + label = "led0:green:brick-status"; + /* GP6[13] */ + gpios = <&gpio 103 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + right_red { + label = "led1:red:brick-status"; + /* GP6[7] */ + gpios = <&gpio 108 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + left_red { + label = "led0:red:brick-status"; + /* GP6[12] */ + gpios = <&gpio 109 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + right_green { + label = "led1:green:brick-status"; + /* GP6[14] */ + gpios = <&gpio 110 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + }; + + /* + * The EV3 is powered down by turning off the main 5V supply. + */ + gpio-poweroff { + compatible = "gpio-poweroff"; + gpios = <&gpio 107 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&system_power_pin>; + }; + + /* + * This is a 5V current limiting regulator that is shared by USB, + * the sensor (input) ports, the motor (output) ports and the A/DC. + */ + vcc5v: regulator1 { + pinctrl-names = "default"; + pinctrl-0 = <&vcc5v_pins>; + compatible = "regulator-fixed"; + regulator-name = "vcc5v"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + gpio = <&gpio 101 0>; + over-current-gpios = <&gpio 99 GPIO_ACTIVE_LOW>; + enable-active-high; + regulator-boot-on; + }; +}; + +&pmx_core { + status = "okay"; + + spi0_cs3_pin: pinmux_spi0_cs3_pin { + pinctrl-single,bits = < + /* CS3 */ + 0xc 0x01000000 0x0f000000 + >; + }; + + mmc0_cd_pin: pinmux_mmc0_cd { + pinctrl-single,bits = < + /* GP5[14] */ + 0x2C 0x00000080 0x000000f0 + >; + }; + + button_pins: pinmux_button_pins { + pinctrl-single,bits = < + /* GP1[13] */ + 0x8 0x00000800 0x00000f00 + /* GP6[10] */ + 0x34 0x00800000 0x00f00000 + /* GP6[6] */ + 0x38 0x00000080 0x000000f0 + /* GP7[12], GP7[14], GP7[15] */ + 0x40 0x00808800 0x00f0ff00 + >; + }; + + led_pins: pinmux_led_pins { + pinctrl-single,bits = < + /* GP6[12], GP6[13], GP6[14] */ + 0x34 0x00008880 0x0000fff0 + /* GP6[7] */ + 0x38 0x00000008 0x0000000f + >; + }; + + system_power_pin: pinmux_system_power { + pinctrl-single,bits = < + /* GP6[11] */ + 0x34 0x00080000 0x000f0000 + >; + }; + + vcc5v_pins: pinmux_vcc5v { + pinctrl-single,bits = < + /* GP6[5] */ + 0x40 0x00000080 0x000000f0 + /* GP6[3] */ + 0x4c 0x00008000 0x0000f000 + >; + }; +}; + +&pinconf { + status = "okay"; + + /* Buttons have external pulldown resistors */ + button_bias: button-bias-groups { + disable { + groups = "cp5", "cp24", "cp25", "cp28"; + bias-disable; + }; + }; +}; + +/* Input port 1 */ +&serial1 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&serial1_rxtx_pins>; +}; + +&rtc0 { + status = "okay"; +}; + +&i2c0 { + status = "okay"; + clock-frequency = <400000>; + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + + /* + * EEPROM contains the first stage bootloader, HW ID and Bluetooth MAC. + */ + eeprom@50 { + compatible = "microchip,24c128"; + pagesize = <64>; + read-only; + reg = <0x50>; + }; +}; + +&wdt { + status = "okay"; +}; + +&mmc0 { + status = "okay"; + max-frequency = <50000000>; + bus-width = <4>; + cd-gpios = <&gpio 94 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&mmc0_pins>, <&mmc0_cd_pin>; +}; + +&spi0 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>, <&spi0_cs3_pin>; + + flash@0 { + compatible = "n25q128a13", "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <50000000>; + ti,spi-wdelay = <8>; + + /* Partitions are based on the official firmware from LEGO */ + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "U-Boot"; + reg = <0 0x40000>; + }; + + partition@40000 { + label = "U-Boot Env"; + reg = <0x40000 0x10000>; + }; + + partition@50000 { + label = "Kernel"; + reg = <0x50000 0x200000>; + }; + + partition@250000 { + label = "Filesystem"; + reg = <0x250000 0xa50000>; + }; + + partition@cb0000 { + label = "Storage"; + reg = <0xcb0000 0x2f0000>; + }; + }; + }; +}; + +&gpio { + status = "okay"; +}; + +&usb_phy { + status = "okay"; +}; + +&usb0 { + status = "okay"; +}; + +&usb1 { + status = "okay"; + vbus-supply = <&vcc5v>; +}; |