ARM: dts: sun5i: Add PocketBook 614 Plus support

What works:

- Serial console
- mmc0, mmc2 (both microSD card slots on the board)
- All buttons (gpio and lradc based)
- Power LED
- PMIC
- RTC
- USB OTG/gadgets mode

Signed-off-by: Denis Burkov <[e-mail]>
Reviewed-by: Jernej Skrabec <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jernej Skrabec <[e-mail]>

arch/arm/boot/dts/allwinner/Makefile

···
 	sun5i-a13-olinuxino.dtb \
 	sun5i-a13-olinuxino-micro.dtb \
 	sun5i-a13-pocketbook-touch-lux-3.dtb \
+	sun5i-a13-pocketbook-614-plus.dtb \
 	sun5i-a13-q8-tablet.dtb \
 	sun5i-a13-utoo-p66.dtb \
 	sun5i-gr8-chip-pro.dtb \

arch/arm/boot/dts/allwinner/sun5i-a13-pocketbook-614-plus.dts

···
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2024 Denis Burkov <[e-mail]>
+ */
+
+/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/leds/common.h>
+
+/ {
+	model = "PocketBook 614 Plus";
+	compatible = "pocketbook,614-plus", "allwinner,sun5i-a13";
+
+	aliases {
+		serial0 = &uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_POWER;
+			linux,default-trigger = "default-on";
+			gpios = <&pio 4 8 GPIO_ACTIVE_LOW>; /* PE8 */
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		key-0 {
+			label = "Right";
+			linux,code = <KEY_NEXT>;
+			gpios = <&pio 6 9 GPIO_ACTIVE_LOW>; /* PG9 */
+		};
+
+		key-1 {
+			label = "Left";
+			linux,code = <KEY_PREVIOUS>;
+			gpios = <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 */
+		};
+	};
+
+	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";
+
+	axp209: pmic@34 {
+		compatible = "x-powers,axp209";
+		reg = <0x34>;
+		interrupts = <0>;
+	};
+};
+
+#include "axp209.dtsi"
+
+&i2c1 {
+	status = "okay";
+
+	pcf8563: rtc@51 {
+		compatible = "nxp,pcf8563";
+		reg = <0x51>;
+		#clock-cells = <0>;
+	};
+};
+
+&lradc {
+	vref-supply = <&reg_ldo2>;
+	status = "okay";
+
+	button-300 {
+		label = "Down";
+		linux,code = <KEY_DOWN>;
+		channel = <0>;
+		voltage = <300000>;
+	};
+
+	button-700 {
+		label = "Up";
+		linux,code = <KEY_UP>;
+		channel = <0>;
+		voltage = <700000>;
+	};
+
+	button-1000 {
+		label = "Left";
+		linux,code = <KEY_LEFT>;
+		channel = <0>;
+		voltage = <1000000>;
+	};
+
+	button-1200 {
+		label = "Menu";
+		linux,code = <KEY_MENU>;
+		channel = <0>;
+		voltage = <1200000>;
+	};
+
+	button-1500 {
+		label = "Right";
+		linux,code = <KEY_RIGHT>;
+		channel = <0>;
+		voltage = <1500000>;
+	};
+};
+
+&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";
+};
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1500000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-int-dll";
+};
+
+&reg_ldo1 {
+	regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+	regulator-always-on;
+	regulator-min-microvolt = <3000000>;
+	regulator-max-microvolt = <3000000>;
+	regulator-name = "avcc";
+};
+
+&reg_usb0_vbus {
+	status = "okay";
+	gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
+};
+
+&reg_usb1_vbus {
+	gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pg_pins>;
+	status = "okay";
+};
+
+&usb_otg {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usb_power_supply {
+	status = "okay";
+};
+
+&battery_power_supply {
+	status = "okay";
+};
+
+&usbphy {
+	usb0_id_det-gpios = <&pio 6 2 GPIO_ACTIVE_HIGH>; /* PG2 */
+	usb0_vbus_det-gpios = <&axp_gpio 1 GPIO_ACTIVE_HIGH>;
+	usb0_vbus-supply = <&reg_usb0_vbus>;
+	usb1_vbus-supply = <&reg_usb1_vbus>;
+	status = "okay";
+};