Brooklyn/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts

/*
 * tinylcd35-overlay.dts
 *
 * -------------------------------------------------
 * www.tinlylcd.com
 * -------------------------------------------------
 * Device---Driver-----BUS       GPIO's
 * display  tinylcd35  spi0.0    25 24 18
 * touch    ads7846    spi0.1    5
 * rtc      ds1307     i2c1-0068
 * rtc      pcf8563    i2c1-0051
 * keypad   gpio-keys  --------- 17 22 27 23 28
 *
 *
 * TinyLCD.com 3.5 inch TFT
 *
 *  Version 001
 *  5/3/2015  -- Noralf Trønnes     Initial Device tree framework
 *  10/3/2015 -- tinylcd@gmail.com  added ds1307 support.
 *
 */

/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&spi0>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@1 {
		target = <&spidev0>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@2 {
		target = <&spidev1>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@3 {
		target = <&gpio>;
		__overlay__ {
			tinylcd35_pins: tinylcd35_pins {
				brcm,pins = <25 24 18>;
				brcm,function = <1>; /* out */
			};
			tinylcd35_ts_pins: tinylcd35_ts_pins {
				brcm,pins = <5>;
				brcm,function = <0>; /* in */
			};
			keypad_pins: keypad_pins {
				brcm,pins = <4 17 22 23 27>;
				brcm,function = <0>; /* in */
				brcm,pull = <1>; /* down */
			};
		};
	};

	fragment@4 {
		target = <&spi0>;
		__overlay__ {
			/* needed to avoid dtc warning */
			#address-cells = <1>;
			#size-cells = <0>;

			tinylcd35: tinylcd35@0{
				compatible = "neosec,tinylcd";
				reg = <0>;
				pinctrl-names = "default";
				pinctrl-0 = <&tinylcd35_pins>,
					    <&tinylcd35_ts_pins>;

				spi-max-frequency = <48000000>;
				rotate = <270>;
				fps = <20>;
				bgr;
				buswidth = <8>;
				reset-gpios = <&gpio 25 1>;
				dc-gpios = <&gpio 24 0>;
				led-gpios = <&gpio 18 0>;
				debug = <0>;

				init = <0x10000B0 0x80
					0x10000C0 0x0A 0x0A
					0x10000C1 0x01 0x01
					0x10000C2 0x33
					0x10000C5 0x00 0x42 0x80
					0x10000B1 0xD0 0x11
					0x10000B4 0x02
					0x10000B6 0x00 0x22 0x3B
					0x10000B7 0x07
					0x1000036 0x58
					0x10000F0 0x36 0xA5 0xD3
					0x10000E5 0x80
					0x10000E5 0x01
					0x10000B3 0x00
					0x10000E5 0x00
					0x10000F0 0x36 0xA5 0x53
					0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
					0x100003A 0x55
					0x1000011
					0x2000001
					0x1000029>;
			};

			tinylcd35_ts: tinylcd35_ts@1 {
				compatible = "ti,ads7846";
				reg = <1>;
				status = "disabled";

				spi-max-frequency = <2000000>;
				interrupts = <5 2>; /* high-to-low edge triggered */
				interrupt-parent = <&gpio>;
				pendown-gpio = <&gpio 5 0>;
				ti,x-plate-ohms = /bits/ 16 <100>;
				ti,pressure-max = /bits/ 16 <255>;
			};
		};
	};

	/*  RTC    */

	fragment@5 {
		target = <&i2c1>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;

			status = "okay";

			pcf8563: pcf8563@51 {
				compatible = "nxp,pcf8563";
				reg = <0x51>;
				status = "okay";
			};
		};
	};

	fragment@6 {
		target = <&i2c1>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;

			status = "okay";

			ds1307: ds1307@68 {
				compatible = "dallas,ds1307";
				reg = <0x68>;
				status = "okay";
			};
		};
	};

	/*
	 * Values for input event code is found under the
	 * 'Keys and buttons' heading in include/uapi/linux/input.h
	 */
	fragment@7 {
		target-path = "/soc";
		__overlay__ {
			keypad: keypad {
				compatible = "gpio-keys";
				pinctrl-names = "default";
				pinctrl-0 = <&keypad_pins>;
				status = "disabled";
				autorepeat;

				button@17 {
					label = "GPIO KEY_UP";
					linux,code = <103>;
					gpios = <&gpio 17 0>;
				};
				button@22 {
					label = "GPIO KEY_DOWN";
					linux,code = <108>;
					gpios = <&gpio 22 0>;
				};
				button@27 {
					label = "GPIO KEY_LEFT";
					linux,code = <105>;
					gpios = <&gpio 27 0>;
				};
				button@23 {
					label = "GPIO KEY_RIGHT";
					linux,code = <106>;
					gpios = <&gpio 23 0>;
				};
				button@4 {
					label = "GPIO KEY_ENTER";
					linux,code = <28>;
					gpios = <&gpio 4 0>;
				};
			};
		};
	};

	__overrides__ {
		speed =      <&tinylcd35>,"spi-max-frequency:0";
		rotate =     <&tinylcd35>,"rotate:0";
		fps =        <&tinylcd35>,"fps:0";
		debug =      <&tinylcd35>,"debug:0";
		touch =      <&tinylcd35_ts>,"status";
		touchgpio =  <&tinylcd35_ts_pins>,"brcm,pins:0",
			     <&tinylcd35_ts>,"interrupts:0",
			     <&tinylcd35_ts>,"pendown-gpio:4";
		xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
		rtc-pcf =    <0>,"=5";
		rtc-ds =     <0>,"=6";
		keypad =     <&keypad>,"status";
	};
};