Tactility/Devices/tulip-4r11/tulip-4r11.dts

/dts-v1/;

#include <tactility/bindings/battery_sense.h>
#include <tactility/bindings/root.h>
#include <tactility/bindings/esp32_adc_oneshot.h>
#include <tactility/bindings/esp32_ble.h>
#include <tactility/bindings/esp32_wifi_pinned.h>
#include <tactility/bindings/esp32_gpio.h>
#include <tactility/bindings/esp32_i2c.h>
#include <tactility/bindings/esp32_i2s.h>
#include <tactility/bindings/esp32_usbhost.h>
#include <tactility/bindings/esp32_pwm_ledc.h>
#include <tactility/bindings/gpio_hog.h>
#include <tactility/bindings/pwm_backlight.h>

#include <bindings/rgb_display.h>
#include <bindings/gt911.h>
#include <bindings/dummy_i2s_amp.h>

// Reference: https: //github.com/TulipCC/tulipcc/
 / {
	compatible = "root";
	model = "Tulip 4 (R11)";

	wifi0 {
		compatible = "espressif,esp32-wifi-pinned";
		status = "disabled";
	};

	ble0 {
		compatible = "espressif,esp32-ble";
		status = "disabled";
	};

	gpio0 {
		compatible = "espressif,esp32-gpio";
		gpio-count = <49>;
	};

	// Battery voltage is sensed through the 470K/470K divider (R34/R38) into GPIO3
	// (ADC1_CH2), i.e. a straight 2: 1 divider; the RY3730 charger IC has no I2C
	// interface to drive. Reference: tulipcc tulip/shared/py/tulip.py battery().
	adc0 {
		compatible = "espressif,esp32-adc-oneshot";
		unit-id = <ADC_UNIT_1>;
		channels = <ADC_CHANNEL_2 ADC_ATTEN_DB_12 ADC_BITWIDTH_DEFAULT>;
	};

	battery-sense {
		compatible = "battery-sense";
		io-channel = <&adc0 0>;
		reference-voltage-mv = <3300>;
		multiplier = <2000>;
	};

	// The Grove connector shares this I2C bus with the touch controller
	i2c0 {
		compatible = "espressif,esp32-i2c";
		port = <I2C_NUM_0>;
		clock-frequency = <100000>;
		pin-sda = <&gpio0 17 GPIO_FLAG_PULL_UP>;
		pin-scl = <&gpio0 18 GPIO_FLAG_PULL_UP>;

		touch0 {
			compatible = "goodix,gt911";
			reg = <0x5D>;
			x-max = <1024>;
			y-max = <600>;
			// R11 inverts the reset line (active-high) and needs two toggle cycles before it
			// starts responding on I2C.
			pin-reset = <&gpio0 48 GPIO_FLAG_ACTIVE_HIGH>;
			reset-pulses = <2>;
			// The controller's programmed Y range (~750) exceeds the panel's 600 rows and the
			// sensor sits slightly offset from the panel; calibrate per the reference firmware
			x-offset = <-2>;
			y-offset = <-10>;
			y-scale = <800>;
		};
	};

	// The unused panel data lines (G2 and B3 are unconnected on R11) are driven low exactly
	// like the reference firmware does, so the panel never sees floating inputs on them.
	panel_data_low_b4 {
		compatible = "gpio-hog";
		pin = <&gpio0 38 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	panel_data_low_b5 {
		compatible = "gpio-hog";
		pin = <&gpio0 46 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	panel_data_low_g3 {
		compatible = "gpio-hog";
		pin = <&gpio0 6 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	panel_data_low_g4 {
		compatible = "gpio-hog";
		pin = <&gpio0 7 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	panel_data_low_r3 {
		compatible = "gpio-hog";
		pin = <&gpio0 45 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	panel_data_low_r4 {
		compatible = "gpio-hog";
		pin = <&gpio0 13 GPIO_FLAG_NONE>;
		mode = <GPIO_HOG_MODE_OUTPUT_LOW>;
	};

	// Backlight is active-low: the reference firmware drives duty 0 at max brightness.
	display_backlight_pwm {
		compatible = "espressif,esp32-pwm-ledc";
		pin = <&gpio0 47 GPIO_FLAG_NONE>;
		period-ns = <3333333>;
		duty-resolution = <13>;
		ledc-timer = <1>;
		ledc-channel = <1>;
		inverted;
	};

	display_backlight {
		compatible = "pwm-backlight";
		pwm = <&display_backlight_pwm>;
		brightness-level-range = <0 255>;
		brightness-default = <200>;
	};

	display0 {
		compatible = "espressif,esp32-rgb-display";
		horizontal-resolution = <1024>;
		vertical-resolution = <600>;
		pixel-clock-hz = <28000000>;
		hsync-pulse-width = <30>;
		hsync-back-porch = <16>;
		hsync-front-porch = <210>;
		vsync-pulse-width = <13>;
		vsync-back-porch = <10>;
		vsync-front-porch = <22>;
		data-width = <8>;
		bits-per-pixel = <8>;
		custom-pixel-format = <RGB_DISPLAY_PIXEL_FORMAT_RGB332>;
		num-fbs = <1>;
		pin-hsync = <&gpio0 39 GPIO_FLAG_NONE>;
		pin-vsync = <&gpio0 41 GPIO_FLAG_NONE>;
		pin-de = <&gpio0 40 GPIO_FLAG_NONE>;
		pin-pclk = <&gpio0 42 GPIO_FLAG_NONE>;
		pin-data0 = <&gpio0 9 GPIO_FLAG_NONE>; // B6
		pin-data1 = <&gpio0 1 GPIO_FLAG_NONE>; // B7
		pin-data2 = <&gpio0 15 GPIO_FLAG_NONE>; // G5
		pin-data3 = <&gpio0 16 GPIO_FLAG_NONE>; // G6
		pin-data4 = <&gpio0 4 GPIO_FLAG_NONE>; // G7
		pin-data5 = <&gpio0 10 GPIO_FLAG_NONE>; // R5
		pin-data6 = <&gpio0 21 GPIO_FLAG_NONE>; // R6
		pin-data7 = <&gpio0 14 GPIO_FLAG_NONE>; // R7
		backlight = <&display_backlight>;
	};

	i2s0 {
		compatible = "espressif,esp32-i2s";
		port = <I2S_NUM_0>;
		pin-bclk = <&gpio0 8 GPIO_FLAG_NONE>;
		pin-ws = <&gpio0 2 GPIO_FLAG_NONE>;
		pin-data-out = <&gpio0 5 GPIO_FLAG_NONE>;
	};

	speaker0 {
		compatible = "ti,pcm5101a";
		i2s = <&i2s0>;
	};

	usbhost0 {
		compatible = "espressif,esp32-usbhost";

		usbhosthid0 {
			compatible = "espressif,esp32-usbhost-hid";
		};

		usbhostmidi0 {
			compatible = "espressif,esp32-usbhost-midi";
		};

		usbhostmsc0 {
			compatible = "espressif,esp32-usbhost-msc";
		};
	};
};