arch/arm/boot/dts/sun5i-a13-pocketbook-touch-lux-3.dts

// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
 * Copyright 2019 Ondrej Jirman <megous@megous.com>
 */

/dts-v1/;
#include "sun5i-a13.dtsi"
#include "sunxi-common-regulators.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pwm/pwm.h>

/ {
	model = "PocketBook Touch Lux 3";
	compatible = "pocketbook,touch-lux-3", "allwinner,sun5i-a13";

	aliases {
		serial0 = &uart1;
		i2c0 = &i2c0;
		i2c1 = &i2c1;
		i2c2 = &i2c2;
	};

	backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
		enable-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
		brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
		default-brightness-level = <8>;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	leds {
		compatible = "gpio-leds";

		power {
			gpios = <&pio 4 8 GPIO_ACTIVE_LOW>; /* PE8 */
			default-state = "on";
		};
	};

	gpio-keys {
		compatible = "gpio-keys";
		autorepeat;
		label = "GPIO Keys";

		key-right {
			label = "Right";
			linux,code = <KEY_RIGHT>;
			gpios = <&pio 6 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PG9 */
		};

		key-left {
			label = "Left";
			linux,code = <KEY_LEFT>;
			gpios = <&pio 6 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PG10 */
		};
	};

	regulator-eink {
		compatible = "custom,reg-userspace-consumer";
		controlled-supply = <&tp65185x>;
	};

	reg_1v8: regulator-1v8 {
		compatible = "regulator-fixed";
		regulator-name = "vdd-1v8-nor-ctp";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		gpio = <&pio 2 15 GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

	reg_1v8_nor: regulator-nor {
		compatible = "regulator-fixed";
		regulator-name = "vdd-nor";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		gpio = <&pio 2 14 GPIO_ACTIVE_HIGH>;
		enable-active-high;
		vin-supply = <&reg_1v8>;
	};

	reg_1v8_ctp: regulator-ctp {
		compatible = "regulator-fixed";
		regulator-name = "vdd-ctp";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		gpio = <&pio 2 13 GPIO_ACTIVE_HIGH>;
		enable-active-high;
		vin-supply = <&reg_1v8>;
	};

	reg_3v3_mmc0: regulator-mmc0 {
		compatible = "regulator-fixed";
		regulator-name = "vdd-mmc0";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		gpio = <&pio 4 4 GPIO_ACTIVE_LOW>; /* PE4 */
		vin-supply = <&reg_vcc3v3>;
	};
};

&cpu0 {
	cpu-supply = <&reg_dcdc2>;
};

&ehci0 {
	status = "okay";
};

&i2c0 {
	status = "okay";
	//XXX: bsp has pullup on PB0/PB1 pins enabled, but it works without it

	axp209: pmic@34 {
		reg = <0x34>;
		interrupts = <0>;
	};
};

#include "axp209.dtsi"

&i2c1 {
	status = "okay";

	pcf8563: rtc@51 {
		compatible = "nxp,pcf8563";
		reg = <0x51>;
		#clock-cells = <0>;
	};

	// hacky PMIC driver for eInk display
	tp65185x: regulator@68 {
		compatible = "tp,tp65185x";
		reg = <0x68>;

		regulator-min-microvolt = <3120000>;
		regulator-max-microvolt = <3120000>;
		regulator-name = "eink-vcom";

		//XXX: we don't use interrupts in the driver right now
		//interrupt-parent = <&pio>;
		//interrupts = <1 10 IRQ_TYPE_LEVEL_LOW>; /* PB10 */

		wakeup-gpios = <&pio 3 18 GPIO_ACTIVE_HIGH>; /* PD18 */
		powerup-gpios = <&pio 4 7 GPIO_ACTIVE_HIGH>; /* PE7 */
		vcom-gpios = <&pio 3 19 GPIO_ACTIVE_HIGH>; /* PD19 */
		//XXX: not a pullup on BSP (might have an external resistor)
		powergood-gpios = <&pio 4 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* PE6 */
	};
};

&i2c2 {
	status = "okay";

	touchpanel@24 {
		compatible = "cypress,cyttsp4_i2c_adapter";
		reg = <0x24>;

		interrupt-parent = <&pio>;
		interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; /* PG11 */

		vdd-supply = <&reg_1v8_ctp>;
		power-gpios = <&pio 4 5 GPIO_ACTIVE_LOW>; /* PE5 */
		reset-gpios = <&pio 1 3 GPIO_ACTIVE_LOW>; /* PB3 */
	};
};

&lradc {
	vref-supply = <&reg_ldo2>;
	status = "okay";

	button-200 {
		label = "Home";
		linux,code = <KEY_HOME>;
		channel = <0>;
		voltage = <200000>;
	};

	button-400 {
		label = "Menu";
		linux,code = <KEY_MENU>;
		channel = <0>;
		voltage = <400000>;
	};
};

&mmc0 {
	vmmc-supply = <&reg_3v3_mmc0>;
	bus-width = <4>;
	cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
	status = "okay";
};

&mmc2 {
	pinctrl-names = "default";
	pinctrl-0 = <&mmc2_4bit_pc_pins>;
	vmmc-supply = <&reg_vcc3v3>;
	bus-width = <4>;
	non-removable;
	status = "okay";
};

&ohci0 {
	status = "okay";
};

&otg_sram {
	status = "okay";
};

&pio {
	eink_pins_active: eink-pins-lcd {
		pins = "PD3", "PD4", "PD5", "PD6", "PD7", "PD10", "PD11", "PD12",
			"PD13", "PD15", "PD20", "PD21", "PD22", "PD23", "PD24";
		function = "lcd0";
	};

	eink_pins_idle: eink-pins-gpio {
		pins = "PD3", "PD4", "PD5", "PD6", "PD7", "PD10", "PD11", "PD12",
			"PD13", "PD15", "PD20", "PD21", "PD22", "PD23", "PD24";
		function = "gpio_out";
	};
};

&pwm {
	pinctrl-names = "default";
	pinctrl-0 = <&pwm0_pin>;
	status = "okay";
};

&reg_dcdc2 {
	regulator-always-on;
	regulator-min-microvolt = <1000000>;
	regulator-max-microvolt = <1400000>;
	regulator-name = "vdd-cpu";
};

&reg_dcdc3 {
	regulator-always-on;
	regulator-min-microvolt = <1200000>;
	regulator-max-microvolt = <1200000>;
	regulator-name = "vdd-int-pll";
};

&reg_ldo1 {
	regulator-name = "vdd-rtc";
};

&reg_ldo2 {
	regulator-always-on;
	regulator-min-microvolt = <3000000>;
	regulator-max-microvolt = <3000000>;
	regulator-name = "avcc";
};

&reg_ldo3 {
	regulator-min-microvolt = <3300000>;
	regulator-max-microvolt = <3300000>;
	regulator-name = "vcc-wifi";
	/* We need this otherwise the LDO3 would overload */
	regulator-soft-start;
	regulator-ramp-delay = <1600>;
};

&soc {
	display-controller@1c0c000 {
		pinctrl-names = "idle", "active";
		pinctrl-0 = <&eink_pins_idle>;
		pinctrl-1 = <&eink_pins_active>;

		all-gpios = <&pio 3 3 GPIO_ACTIVE_HIGH>,
			<&pio 3 4 GPIO_ACTIVE_HIGH>,
			<&pio 3 5 GPIO_ACTIVE_HIGH>,
			<&pio 3 6 GPIO_ACTIVE_HIGH>,
			<&pio 3 7 GPIO_ACTIVE_HIGH>,
			<&pio 3 10 GPIO_ACTIVE_HIGH>,
			<&pio 3 11 GPIO_ACTIVE_HIGH>,
			<&pio 3 12 GPIO_ACTIVE_HIGH>,
			<&pio 3 13 GPIO_ACTIVE_HIGH>,
			<&pio 3 15 GPIO_ACTIVE_HIGH>,
			<&pio 3 20 GPIO_ACTIVE_HIGH>,
			<&pio 3 21 GPIO_ACTIVE_HIGH>,
			<&pio 3 22 GPIO_ACTIVE_HIGH>,
			<&pio 3 23 GPIO_ACTIVE_HIGH>,
			<&pio 3 24 GPIO_ACTIVE_HIGH>;

		compatible = "custom,pocketbook-touch-lux-3-tcon0-ed060xd4-display";
		reg = <0x01c0c000 0x1000>, // TCON0 regs
			<0x01e60000 0x10000>; // DEBE regs

		interrupts = <44>; // TCON interrupt

		resets = <&ccu RST_LCD>, <&ccu RST_DE_BE>;
		reset-names = "tcon", "be";

		clocks = <&ccu CLK_AHB_LCD>, <&ccu CLK_TCON_CH0>,
			 <&ccu CLK_AHB_DE_BE>, <&ccu CLK_DE_BE>,
			 <&ccu CLK_DRAM_DE_BE>;
		clock-names = "tcon_bus", "tcon_mod",
			      "be_bus", "be_mod",
			      "be_ram";

		assigned-clocks = <&ccu CLK_DE_BE>;
		assigned-clock-rates = <300000000>;

		interconnects = <&mbus 18>;
		interconnect-names = "dma-mem";

		panel-supply = <&tp65185x>;
		control-device-name = "eink-panel";
	};
};

&spi2 {
	pinctrl-names = "default";
	pinctrl-0 = <&spi2_pe_pins>, <&spi2_cs0_pe_pin>;
	status = "okay";

	epd_flash: flash@0 {
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "macronix,mx25u4033", "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <4000000>;
		vdd-supply = <&reg_1v8_nor>;
	};
};

&uart1 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart1_pg_pins>;
	status = "okay";
};

&usb_otg {
	dr_mode = "peripheral";
	status = "okay";
};

&battery_power_supply {
	status = "okay";
};

&usb_power_supply {
	status = "okay";
};

&usbphy {
	//XXX: might not work, need to test
	usb0_vbus_det-gpios = <&pio 6 1 GPIO_ACTIVE_HIGH>; /* PG1 */
	usb1_vbus-supply = <&reg_ldo3>;
	status = "okay";
};