/*
 * crystalfontz-cfa050_pi_m-overlay.dts
 * Configures the Crystalfontz CFA050-PI-M series of modules
 * using CFAF7201280A0-050TC/TN panels with RaspberryPi CM4 DSI1
 */
/dts-v1/;
/plugin/;
/{
// RaspberryPi CM4
	compatible = "brcm,bcm2835";
// PCF8574 I2C GPIO EXPANDER
	frag0: fragment@0 {
		target = <&i2c_csi_dsi>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			pcf8574a: pcf8574a@38 {
				reg = <0x38>;
				compatible = "nxp,pcf8574";
				gpio-controller;
				#gpio-cells = <2>;
				ngpios = <8>;
				gpio-line-names = "TFT_RESET", "TOUCH_RESET", "EXT_P2", "EXT_P3",
					"EXT_P4", "EXT_P5", "EXT_P6", "EXT_P7";
			};
		};
	};
// LM3630a BACKLIGHT LED CONTROLLER
	frag1: fragment@1 {
		target = <&i2c_csi_dsi>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			lm3630a: backlight@36 {
				reg = <0x36>;
				compatible = "ti,lm3630a";
				#address-cells = <1>;
				#size-cells = <0>;
				led@0 {
					reg = <0>;
					led-sources = <0 1>;
					label = "lcd-backlight";
					default-brightness = <255>;
					max-brightness = <255>;
				};
			};
		};
	};
// PCF85063A RTC on I2C
	frag2: fragment@2 {
		target = <&i2c_csi_dsi>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			pcf85063a@51 {
				compatible = "nxp,pcf85063a";
				reg = <0x51>;
			};
		};
	};

// CFAF7201280A0_050Tx TFT DSI PANEL
	fragment@3 {
		target = <&dsi1>;
		__overlay__  {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			port {
				dsi_out: endpoint {
					remote-endpoint = <&panel_in>;
				};
			};
			dsi_panel: dsi_panel@0 {
				compatible = "crystalfontz,cfaf7201280a0_050tx";
				reg = <0>;
				reset-gpios = <&pcf8574a 0 1>;
				backlight = <&lm3630a>;
				fps = <60>;
				port {
					panel_in: endpoint {
						remote-endpoint = <&dsi_out>;
					};
				};
			};
		};
	};
// rPI GPIO INPUT FOR TOUCH IC IRQ
	fragment@4 {
		target = <&gpio>;
		__dormant__ {
			gt928intpins: gt928intpins {
				brcm,pins = <26>; //gpio pin
				brcm,function = <0>; //input
				brcm,pull = <2>; //2=pull-up
			};
		};
	};
// GT928 TOUCH CONTROLLER IC
	frag5: fragment@5 {
		target = <&i2c_csi_dsi>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";
			gt928: gt928@5d {
				compatible = "goodix,gt928";
				reg = <0x5d>;
				pinctrl-names = "default";
				pinctrl-0 = <&gt928intpins>;
				interrupt-parent = <&gpio>;
				interrupts = <26 2>; //gpio 26, 2=high-to-low trigger
				irq-gpios = <&gpio 26 0>; //gpio 26, 0=active-high
				reset-gpios = <&pcf8574a 1 1>;
				touchscreen-inverted-x;
				touchscreen-inverted-y;
			};
		};
	};
//OVERLAY OPTIONS
	__overrides__ {
		//enables captouch
		captouch = <0>,"+4+5";
		//changes options to support CM5 (default is CM4)
		cm5 = <&frag0>, "target:0=",<&i2c_csi_dsi0>,
			<&frag1>, "target:0=",<&i2c_csi_dsi0>,
			<&frag2>, "target:0=",<&i2c_csi_dsi0>,
			<&frag5>, "target:0=",<&i2c_csi_dsi0>;
	};
};