linux/arch/arm64/boot/dts/amlogic/meson-gxm-ugoos-am3.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
 *
 * Debug UART (3.3V, 115200 baud) at the corner of the board:
 *   (4) (3) (2) [1]
 *   Vcc RXD TXD GND
 */

/dts-v1/;

#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/amlogic,meson-g12a-gpio-intc.h>

#include "meson-gxm.dtsi"
#include "meson-gx-p23x-q20x.dtsi"

/ {
	compatible = "ugoos,am3", "amlogic,s912", "amlogic,meson-gxm";
	model = "Ugoos AM3";

	adc-keys {
		compatible = "adc-keys";
		io-channels = <&saradc 0>;
		io-channel-names = "buttons";
		keyup-threshold-microvolt = <1710000>;

		button-function {
			label = "Update";
			linux,code = <KEY_VENDOR>;
			press-threshold-microvolt = <10000>;
		};
	};
};

&cvbs_connector {
	/* Not used on this board */
	status = "disabled";
};

&ethmac {
	pinctrl-0 = <&eth_pins>;
	pinctrl-names = "default";

	/* Select external PHY by default */
	phy-handle = <&external_phy>;

	amlogic,tx-delay-ns = <2>;

	/* External PHY is in RGMII */
	phy-mode = "rgmii";

	status = "okay";
};

&external_mdio {
	external_phy: ethernet-phy@0 {
		/* Realtek RTL8211F (0x001cc916) */
		reg = <0>;

		reset-assert-us = <10000>;
		reset-deassert-us = <80000>;
		reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;

		interrupt-parent = <&gpio_intc>;
		/* MAC_INTR on GPIOZ_15 */
		interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
	};
};

&i2c_B {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&i2c_b_pins>;

	rtc: rtc@51 {
		compatible = "haoyu,hym8563";
		reg = <0x51>;
		#clock-cells = <0>;
	};
};

/* WLAN: Atheros 10k (QCA9377) */
&sd_emmc_a {
	max-frequency = <200000000>;
};

/* eMMC */
&sd_emmc_c {
	max-frequency = <100000000>;
};