waveshare32b.dts

/*
 * Device Tree overlay for waveshare 3.2inch TFT LCD
 *
 */

/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";

	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__ {
			waveshare32b_pins: waveshare32b_pins {
				brcm,pins = <17 27 22>;
				brcm,function = <0 0 0>; /* in in in */
			};
		};
	};

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

			waveshare32b: waveshare32b@0{
				compatible = "ilitek,ili9340";
				reg = <0>;
				pinctrl-names = "default";
				pinctrl-0 = <&waveshare32b_pins>;

				spi-max-frequency = <16000000>;
				txbuflen = <32768>;
				rotate = <0>;
				fps = <25>;
				bgr = <0>;
				buswidth = <8>;
				reset-gpios = <&gpio 27 1>;
				dc-gpios = <&gpio 22 0>;
				debug = <0>;
			};

			waveshare32b_ts: waveshare32b-ts@1 {
				compatible = "ti,ads7846";
				reg = <1>;

				spi-max-frequency = <2000000>;
				interrupts = <17 2>; /* high-to-low edge triggered */
				interrupt-parent = <&gpio>;
				pendown-gpio = <&gpio 17 1>;
				ti,x-plate-ohms = /bits/ 16 <60>;
				touchscreen-max-pressure = <255>;
			};
		};
	};

	__overrides__ {
		speed =   	<&waveshare32b>,"spi-max-frequency:0";
		txbuflen =	<&waveshare32b>,"txbuflen:0";
		rotate =  	<&waveshare32b>,"rotate:0";
		fps =     	<&waveshare32b>,"fps:0";
		bgr =		<&waveshare32b>,"bgr:0";
		debug =   	<&waveshare32b>,"debug:0";
		invertx =   	<&waveshare32b_ts>,"touchscreen-inverted-x?";
		inverty =   	<&waveshare32b_ts>,"touchscreen-inverted-y?";
		swapxy =  	<&waveshare32b_ts>,"touchscreen-swapped-x-y?";
	};
};