linux-loongson/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts

// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
// Copyright (C) 2025 Arm Ltd.

/dts-v1/;

#include "sun55i-a523.dtsi"

#include <dt-bindings/gpio/gpio.h>

/ {
	model = "Radxa Cubie A5E";
	compatible = "radxa,cubie-a5e", "allwinner,sun55i-a527";

	aliases {
		ethernet0 = &gmac0;
		serial0 = &uart0;
	};

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

	ext_osc32k: ext-osc32k-clk {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <32768>;
		clock-output-names = "ext_osc32k";
	};

	reg_vcc5v: vcc5v {
		/* board wide 5V supply from the USB-C connector */
		compatible = "regulator-fixed";
		regulator-name = "vcc-5v";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
		regulator-always-on;
	};

	reg_usb_vbus: vbus {
		compatible = "regulator-fixed";
		regulator-name = "usb-vbus";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;
		vin-supply = <&reg_vcc5v>;
		gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>;	/* PL8 */
		enable-active-high;
	};
};

&ehci0 {
	status = "okay";
};

&ehci1 {
	status = "okay";
};

&gmac0 {
	phy-mode = "rgmii-id";
	phy-handle = <&ext_rgmii_phy>;
	phy-supply = <&reg_cldo3>;

	allwinner,tx-delay-ps = <300>;
	allwinner,rx-delay-ps = <400>;

	status = "okay";
};

&gpu {
	mali-supply = <&reg_dcdc2>;
	status = "okay";
};

&mdio0 {
	ext_rgmii_phy: ethernet-phy@1 {
		compatible = "ethernet-phy-ieee802.3-c22";
		reg = <1>;
	};
};

&mmc0 {
	vmmc-supply = <&reg_cldo3>;
	cd-gpios = <&pio 5 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* PF6 */
	bus-width = <4>;
	status = "okay";
};

&ohci0 {
	status = "okay";
};

&ohci1 {
	status = "okay";
};

&pio {
	vcc-pb-supply = <&reg_cldo3>;	/* via VCC-IO */
	vcc-pc-supply = <&reg_cldo1>;
	vcc-pd-supply = <&reg_cldo3>;
	vcc-pe-supply = <&reg_aldo2>;
	vcc-pf-supply = <&reg_cldo3>;	/* actually switchable */
	vcc-pg-supply = <&reg_bldo1>;
	vcc-ph-supply = <&reg_cldo3>;	/* via VCC-IO */
	vcc-pi-supply = <&reg_cldo3>;
	vcc-pj-supply = <&reg_cldo4>;
	vcc-pk-supply = <&reg_cldo1>;
};

&r_i2c0 {
	status = "okay";

	axp717: pmic@34 {
		compatible = "x-powers,axp717";
		reg = <0x34>;
		interrupt-controller;
		#interrupt-cells = <1>;
		interrupt-parent = <&nmi_intc>;
		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;

		vin1-supply = <&reg_vcc5v>;
		vin2-supply = <&reg_vcc5v>;
		vin3-supply = <&reg_vcc5v>;
		vin4-supply = <&reg_vcc5v>;
		aldoin-supply = <&reg_vcc5v>;
		bldoin-supply = <&reg_vcc5v>;
		cldoin-supply = <&reg_vcc5v>;

		regulators {
			/* Supplies the "little" cluster (1.4 GHz cores) */
			reg_dcdc1: dcdc1 {
				regulator-always-on;
				regulator-min-microvolt = <900000>;
				regulator-max-microvolt = <1160000>;
				regulator-name = "vdd-cpul";
			};

			reg_dcdc2: dcdc2 {
				regulator-always-on;
				regulator-min-microvolt = <920000>;
				regulator-max-microvolt = <920000>;
				regulator-name = "vdd-gpu-sys";
			};

			reg_dcdc3: dcdc3 {
				regulator-always-on;
				regulator-min-microvolt = <1100000>;
				regulator-max-microvolt = <1100000>;
				regulator-name = "vdd-dram";
			};

			reg_aldo1: aldo1 {
				/* not connected */
			};

			reg_aldo2: aldo2 {
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-pe";
			};

			reg_aldo3: aldo3 {
				/* supplies the I2C pins for this PMIC */
				regulator-always-on;
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-name = "vcc-pl-usb";
			};

			reg_aldo4: aldo4 {
				regulator-always-on;
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-pll-dxco-avcc";
			};

			reg_bldo1: bldo1 {
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-pg-iowifi";
			};

			reg_bldo2: bldo2 {
				regulator-always-on;
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-pm-lpddr4";
			};

			reg_bldo3: bldo3 {
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-name = "vcc-mipi-cam";
			};

			reg_bldo4: bldo4 {
				/* not connected */
			};

			reg_cldo1: cldo1 {
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-pc-and-their-dog";
			};

			reg_cldo2: cldo2 {
				/* not connected */
			};

			reg_cldo3: cldo3 {
				/* IO, USB-2, 3V3, card, NAND, sensor, PI */
				regulator-always-on;
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-name = "vcc-io-mmc-spi-ana";
			};

			reg_cldo4: cldo4 {
				regulator-min-microvolt = <3300000>;
				regulator-max-microvolt = <3300000>;
				regulator-name = "vcc-pj-phy";
			};

			reg_cpusldo: cpusldo {
				/* supplies the management core */
				regulator-always-on;
				regulator-min-microvolt = <900000>;
				regulator-max-microvolt = <900000>;
				regulator-name = "vdd-cpus";
			};
		};
	};

	axp323: pmic@36 {
		compatible = "x-powers,axp323";
		reg = <0x36>;
		#interrupt-cells = <1>;
		interrupt-controller;
		interrupt-parent = <&nmi_intc>;
		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
		status = "okay";

		vin1-supply = <&reg_vcc5v>;
		vin2-supply = <&reg_vcc5v>;
		vin3-supply = <&reg_vcc5v>;

		regulators {
			aldo1 {
				regulator-min-microvolt = <1800000>;
				regulator-max-microvolt = <1800000>;
				regulator-name = "vcc-mipi-dsi";
			};

			dldo1 {
				/* not connected */
			};

			/* Supplies the "big" cluster (1.8 GHz cores) */
			reg_dcdc1_323: dcdc1 {
				regulator-always-on;
				regulator-min-microvolt = <900000>;
				regulator-max-microvolt = <1160000>;
				regulator-name = "vdd-cpub";
			};

			/* DCDC2 is polyphased with DCDC1 */

			/* RISC-V management core supply */
			reg_dcdc3_323: dcdc3 {
				regulator-always-on;
				regulator-min-microvolt = <900000>;
				regulator-max-microvolt = <900000>;
				regulator-name = "vdd-dnr";
			};
		};
	};
};

&r_pio {
/*
 * Specifying the supply would create a circular dependency.
 *
 *	vcc-pl-supply = <&reg_aldo3>;
 */
	vcc-pm-supply = <&reg_aldo3>;
};

&uart0 {
	pinctrl-names = "default";
	pinctrl-0 = <&uart0_pb_pins>;
	status = "okay";
};

&usb_otg {
	/*
	 * The USB-C port is the primary power supply, so in this configuration
	 * relies on the other end of the USB cable to supply the VBUS power.
	 * So use this port in peripheral mode.
	 * It is possible to supply the board with the 5V pins on the GPIO
	 * header, and since the DCIN_5V line is hardwired to the USB-C VBUS
	 * pins, the port turns into a host port, unconditionally supplying
	 * power. The dr_mode property should be changed to "host" here, if
	 * users choose this setup.
	 */
	dr_mode = "peripheral";
	status = "okay";
};

/*
 * The schematic describes USB0_ID (PL10), measuring VBUS_5V, which looks to
 * be always on. Also there is USB-VBUSDET (PL2), which is measuring the same
 * VBUS_5V. There is also DCIN_DET, which measures DCIN_5V, so the power
 * input rail.
 * None of them seem to make any sense in relation to detecting USB devices
 * or whether there is power provided via any USB pins: they would always
 * report high, otherwise the system wouldn't be running.
 * The AXP717C provides proper USB-C CC pin functionality, but the PMIC is
 * not connected to those pins of the USB-C connector.
 */
&usbphy {
	usb0_vbus-supply = <&reg_vcc5v>;
	usb1_vbus-supply = <&reg_usb_vbus>;
	status = "okay";
};