/*
 * Copyright 2016 
 * Kolja Windeler <kolja.windeler@gmail.com>
 *
 * This file is widly based on the pocket chip overlay from
 * Maxime Ripard <maxime.ripard@free-electrons.com>
 * Copyright 2016 Free Electrons
 * Copyright 2016 NextThing Co
 * https://github.com/NextThingCo/CHIP-dt-overlays/blob/master/nextthingco/dip-pocket-v73.dts
 *
 *
 * This file is dual-licensed: you can use it either under the terms
 * of the GPL or the X11 license, at your option. Note that this dual
 * licensing only applies to this file, and not this project as a
 * whole.
 *
 *  a) This file 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; either version 2 of the
 *     License, or (at your option) any later version.
 *
 *     This file is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 * Or, alternatively,
 *
 *  b) Permission is hereby granted, free of charge, to any person
 *     obtaining a copy of this software and associated documentation
 *     files (the "Software"), to deal in the Software without
 *     restriction, including without limitation the rights to use,
 *     copy, modify, merge, publish, distribute, sublicense, and/or
 *     sell copies of the Software, and to permit persons to whom the
 *     Software is furnished to do so, subject to the following
 *     conditions:
 *
 *     The above copyright notice and this permission notice shall be
 *     included in all copies or substantial portions of the Software.
 *
 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *     OTHER DEALINGS IN THE SOFTWARE.
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/pinctrl/sun4i-a10.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	compatible = "nextthing,chip", "allwinner,sun5i-r8";
	
	/* 	 Enable our SDIO pins		 */
	fragment@0 {
		target = <&pio>;		
		__overlay__ {

			chip_sdio_pins: mmc2@42 {
				allwinner,pins = "PE4", "PE5", "PE6", "PE7", "PE8", "PE9";
				allwinner,function = "mmc2";
				allwinner,drive = <SUN4I_PINCTRL_30_MA>;
				allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
			};

			chip_sdio_cd: mmc2_cd@0 {
				allwinner,pins = "PB3";
				allwinner,function = "gpio_in";
				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
				allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
			};
			
			chip_bl_en: chip_backlight_enable@0 {
				allwinner,pins = "PD18";
				allwinner,function = "gpio_out";
				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
			};
		};
	};


	/*	 Enable our SDIO device	 */
	fragment@1 {
		target = <&mmc2 >;

		__overlay__ {
			vmmc-supply = <&reg_vcc3v3>;
			vqmmc-supply = <&reg_vcc3v3>;
			// everything below this like is default, but I'll set it to be sure
			pinctrl-names = "default";
			compatible = "allwinner,sun5i-a13-mmc";
			pinctrl-0 = <&chip_sdio_pins>,  <&chip_sdio_cd>;
			cd-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
			cd-inverted; // it is low active, but this is somehow wrong
			bus-width = <4>;
                        clocks = <&ahb_gates 10>,<&mmc2_clk 0>,<&mmc2_clk 1>,<&mmc2_clk 2>;
			// and go!
			status = "okay";
		};
	};
	
	/* 	Enable the PWM 		*/
	fragment@2 {
		target = <&pwm>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&pwm0_pins>;
			status = "okay";
		};
	};

	/* 	And enable the backlight running on that PWM 		*/
	fragment@3 {
		target-path = "/";
		__overlay__ {
			backlight: backlight {
				compatible = "pwm-backlight";
				pwms = <&pwm 0 8000 1>;

				brightness-levels = <0 1 2 4 8 12 16 24 28 32 100>;
				default-brightness-level = <8>;

				pinctrl-names = "default";
				pinctrl-0 = <&chip_bl_en>;
				enable-gpios = <&pio 3 18 GPIO_ACTIVE_HIGH>;
			};
		};
	};

	/* 	Enable the touchscreen 	*/
	fragment@4 {
		target = <&rtp>;
		__overlay__ {
			/*	touchscreen-inverted-x;		*/
			/*	touchscreen-inverted-y; 		*/
			allwinner,ts-attached;
		};
	};

	/* 	Enable our panel 	*/
	fragment@5 {
		target-path = "/";
		__overlay__ {
			panel {
				#address-cells = <1>;
				#size-cells = <0>;
				compatible = "olimex,lcd-olinuxino-43-ts";
				backlight = <&backlight>;

				port@0 {
					reg = <0>;
					#address-cells = <1>;
					#size-cells = <0>;

					panel_input: endpoint@0 {
						reg = <0>;
						remote-endpoint = <&tcon0_out_panel>;
					};
				};
			};
		};
	};

	/* 	Link the TCON with the panel 	*/
	fragment@6 {
		target = <&tcon0_out>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			tcon0_out_panel: endpoint@0 {
				reg = <0>;
				remote-endpoint = <&panel_input>;
			};
		};
	};

	/* 	Register the LCD pins with pinctrl 	*/
	fragment@7 {
		target = <&tcon0>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&lcd_rgb565_pins>;
		};
	};
};