PB-beaglearcade.dts

/*
 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
 
 /*
 * Adafruit PiGRRL GamePad to PocketBeagle Button/Pin assignments
 * All signals are Active Low and a ground will need to be connected
 * enter and esc are not used in this project
 *
 * UP	 	- Pin 36	to 	P2_06
 * DOWN 	- Pin 37	to 	P2_02
 * LEFT 	- Pin 7		to 	P2_08
 * RIGHT	- Pin 35	to 	P2_04
 * SELECT	- Pin 29	to 	P2_24
 * START	- Pin 31	to 	P2_20
 * A		- Pin 8		to 	P1_02
 * B		- Pin 10	to 	P1_34
 * X		- Pin 38	to 	P2_33
 * Y 		- Pin 12	to 	P2_35
 */
 
/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	/*
	 * Free up the pins used by the cape from the pinmux helpers.
	 */
	fragment@0 {
		target = <&ocp>;
		__overlay__ {
			P1_04_pinmux { status = "disabled"; };	/* LEDs - left */
			P2_03_pinmux { status = "disabled"; };	/* LEDs - right */
			P1_06_pinmux { status = "disabled"; }; 	/* LCD - CS */
			P1_08_pinmux { status = "disabled"; };	/* LCD - SCLK */
			P1_10_pinmux { status = "disabled"; };	/* LCD - MISO */
			P1_12_pinmux { status = "disabled"; };	/* LCD - MOSI */
			P2_01_pinmux { status = "disabled"; };	/* LCD - LED */
			P2_17_pinmux { status = "disabled"; };	/* LCD - DC */
			P2_19_pinmux { status = "disabled"; };	/* LCD - RST */
			P2_02_pinmux { status = "disabled"; };	/* keys - down */
			P2_04_pinmux { status = "disabled"; };	/* keys - right */
			P2_06_pinmux { status = "disabled"; };	/* keys - up */
	 		P2_08_pinmux { status = "disabled"; };	/* keys - left */
			P2_18_pinmux { status = "disabled"; };	/* keys - enter */
			P2_20_pinmux { status = "disabled"; };	/* keys - one */
			P2_22_pinmux { status = "disabled"; };	/* keys - esc */
			P2_24_pinmux { status = "disabled"; };	/* keys - five */
			P1_02_pinmux { status = "disabled"; };	/* keys - L-ctrl */
			P1_34_pinmux { status = "disabled"; };	/* keys - L-alt */
			P2_33_pinmux { status = "disabled"; };	/* keys - space */
			P2_35_pinmux { status = "disabled"; };	/* keys - L-shift */
		};
	};

	/*
	 * Free up the gpios used by the cape-universal gpio helpers.
	 */
	fragment@1 {
		target = <&ocp>;
		__overlay__ {
			cape-universal { status = "disabled"; };
		};
	};

	/*
	 * Make a new set of gpio helpers.
	 */
	fragment@2 {
		target = <&ocp>;
		__overlay__ {
			cape-universal@1 {
				compatible = "gpio-of-helper";
				status = "okay";
				pinctrl-names = "default";
				pinctrl-0 = <>;

				

				P1_20 {
					gpio-name = "P1_20";
					gpio = <&gpio0 20 0>;
					input;
					dir-changeable;
				};

				P1_26 {
					gpio-name = "P1_26";
					gpio = <&gpio0 12 0>;
					input;
					dir-changeable;
				};

				P1_28 {
					gpio-name = "P1_28";
					gpio = <&gpio0 13 0>;
					input;
					dir-changeable;
				};

				P1_29 {
					gpio-name = "P1_29";
					gpio = <&gpio3 21 0>;
					input;
					dir-changeable;
				};

				P1_30 {
					gpio-name = "P1_30";
					gpio = <&gpio1 11 0>;
					input;
					dir-changeable;
				};

				P1_31 {
					gpio-name = "P1_31";
					gpio = <&gpio3 18 0>;
					input;
					dir-changeable;
				};

				P1_32 {
					gpio-name = "P1_32";
					gpio = <&gpio1 10 0>;
					input;
					dir-changeable;
				};

				P1_33 {
					gpio-name = "P1_33";
					gpio = <&gpio3 15 0>;
					input;
					dir-changeable;
				};

				

				P1_35 {
					gpio-name = "P1_35";
					gpio = <&gpio2 24 0>;
					input;
					dir-changeable;
				};

				P1_36 {
					gpio-name = "P1_36";
					gpio = <&gpio3 14 0>;
					input;
					dir-changeable;
				};

				P2_05 {
					gpio-name = "P2_05";
					gpio = <&gpio0 30 0>;
					input;
					dir-changeable;
				};

				P2_07 {
					gpio-name = "P2_07";
					gpio = <&gpio0 31 0>;
					input;
					dir-changeable;
				};

				P2_09 {
					gpio-name = "P2_09";
					gpio = <&gpio0 15 0>;
					input;
					dir-changeable;
				};

				P2_10 {
					gpio-name = "P2_10";
					gpio = <&gpio1 20 0>;
					input;
					dir-changeable;
				};

				P2_11 {
					gpio-name = "P2_11";
					gpio = <&gpio0 14 0>;
					input;
					dir-changeable;
				};

				P2_25 {
					gpio-name = "P2_25";
					gpio = <&gpio1 9 0>;
					input;
					dir-changeable;
				};

				P2_27 {
					gpio-name = "P2_27";
					gpio = <&gpio1 8 0>;
					input;
					dir-changeable;
				};

				P2_28 {
					gpio-name = "P2_28";
					gpio = <&gpio3 20 0>;
					input;
					dir-changeable;
				};

				P2_29 {
					gpio-name = "P2_29";
					gpio = <&gpio0 7 0>;
					input;
					dir-changeable;
				};

				P2_30 {
					gpio-name = "P2_30";
					gpio = <&gpio3 17 0>;
					input;
					dir-changeable;
				};

				P2_31 {
					gpio-name = "P2_31";
					gpio = <&gpio0 19 0>;
					input;
					dir-changeable;
				};

				P2_32 {
					gpio-name = "P2_32";
					gpio = <&gpio3 16 0>;
					input;
					dir-changeable;
				};

				
				P2_34 {
					gpio-name = "P2_34";
					gpio = <&gpio3 19 0>;
					input;
					dir-changeable;
				};

				
			};
		};
	};

	/*
	 * Free up the SPI port used by the cape and reallocate it for the LCD.
	 */
	fragment@3 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			channel@0 {
				status = "disabled";
			};
			channel@1 {
				status = "disabled";
			};

			adafruit28: adafruit28@0{
				compatible = "ilitek,ili9341";
				pinctrl-names = "default";
				pinctrl-0 = <
					&P1_06_spi_cs_pin 	/* CS */
					&P1_08_spi_sclk_pin 	/* SCLK */
					&P1_10_spi_pin 		/* MISO */
					&P1_12_spi_pin 		/* MOSI */
					&P2_19_gpio_pin		/* RST */
					&P2_17_gpio_pin		/* DC */
					&P2_01_gpio_pin		/* LED */
				>;
				reg = <0>;
				buswidth = <8>;
				reset-gpios = <&gpio0 27 0>;
				dc-gpios = <&gpio2 1 0>;
				led-gpios = <&gpio1 18 1>;
				debug = <1>;
				spi-max-frequency = <32000000>;
				rotate = <0>;
				bgr;
				fps = <30>;
			};
		};
	};
	
	/*
	 * Load the drivers for the buttons and LEDs.
	 */
	fragment@4 {
		target-path="/";
		__overlay__ {

			gpio-keys {
				compatible = "gpio-keys";
				autorepeat;

				pinctrl-names = "default";
				pinctrl-0 = <
					&P2_02_gpio_pu_pin	/* down */
					&P2_04_gpio_pu_pin	/* right */
					&P2_06_gpio_pu_pin	/* up */
					&P2_08_gpio_pu_pin	/* left */
					&P2_18_gpio_pu_pin	/* enter */
					&P2_20_gpio_pu_pin	/* one */
					&P2_22_gpio_pu_pin	/* esc */
					&P2_24_gpio_pu_pin	/* five */
					&P1_02_gpio_pu_pin	/* L-ctrl */
					&P1_34_gpio_pu_pin	/* L-alt */
					&P2_33_gpio_pu_pin	/* space */
					&P2_35_gpio_pu_pin	/* L-shift */
				>;
		
				left {
					label = "left";
					linux,code = <105>;
					gpios = <&gpio1 28 GPIO_ACTIVE_LOW>;
				};
		
				right {
					label = "right";
					linux,code = <106>;
					gpios = <&gpio1 26 GPIO_ACTIVE_LOW>;
				};
		
				up {
					label = "up";
					linux,code = <103>;
					gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
				};
		
				down {
					label = "down";
					linux,code = <108>;
					gpios = <&gpio1 27 GPIO_ACTIVE_LOW>;
				};
		
				five {
					label = "five";
					linux,code = <6>;
					gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
				};
		
				one {
					label = "one";
					linux,code = <2>;
					gpios = <&gpio2 0 GPIO_ACTIVE_LOW>;
				};
		
				esc {
					label = "esc";
					linux,code = <1>;
					gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
				};
		
				enter {
					label = "enter";
					linux,code = <28>;
					gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
				};
				
				L-ctrl {
					label = "L-ctrl";
					linux,code = <29>;
					gpios = <&gpio2 23 GPIO_ACTIVE_LOW>;
				};
				
				L-alt {
					label = "L-alt";
					linux,code = <56>;
					gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
				};
				
				space {
					label = "space";
					linux,code = <57>;
					gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
				};
				
				L-shift {
					label = "L-shift";
					linux,code = <42>;
					gpios = <&gpio2 22 GPIO_ACTIVE_LOW>;
				};
			};
		
			capeleds {
				compatible = "gpio-leds";
		
				pinctrl-names = "default";
				pinctrl-0 = <
					&P1_04_gpio_pin	/* left */
					&P2_03_gpio_pin	/* right */
				>;
		
				led@1 {
					label = "gamingpocketcape::left";
					gpios = <&gpio2 25 GPIO_ACTIVE_HIGH>;
					default-state = "off";
				};
		
				led@2 {
					label = "gamingpocketcape::right";
					gpios = <&gpio0 23 GPIO_ACTIVE_HIGH>;
					default-state = "off";
				};
			};
		};
	};
};