xref: /linux/arch/arm64/boot/dts/amlogic/meson-gxm-ugoos-am3.dts (revision 115e74a29b530d121891238e9551c4bcdf7b04b5) 
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
4 *
5 * Debug UART (3.3V, 115200 baud) at the corner of the board:
6 *   (4) (3) (2) [1]
7 *   Vcc RXD TXD GND
8 */
9
10/dts-v1/;
11
12#include <dt-bindings/input/input.h>
13#include <dt-bindings/interrupt-controller/amlogic,meson-g12a-gpio-intc.h>
14
15#include "meson-gxm.dtsi"
16#include "meson-gx-p23x-q20x.dtsi"
17
18/ {
19	compatible = "ugoos,am3", "amlogic,s912", "amlogic,meson-gxm";
20	model = "Ugoos AM3";
21
22	adc-keys {
23		compatible = "adc-keys";
24		io-channels = <&saradc 0>;
25		io-channel-names = "buttons";
26		keyup-threshold-microvolt = <1710000>;
27
28		button-function {
29			label = "Update";
30			linux,code = <KEY_VENDOR>;
31			press-threshold-microvolt = <10000>;
32		};
33	};
34};
35
36&cvbs_connector {
37	/* Not used on this board */
38	status = "disabled";
39};
40
41&ethmac {
42	pinctrl-0 = <&eth_pins>;
43	pinctrl-names = "default";
44
45	/* Select external PHY by default */
46	phy-handle = <&external_phy>;
47
48	amlogic,tx-delay-ns = <2>;
49
50	/* External PHY is in RGMII */
51	phy-mode = "rgmii";
52
53	status = "okay";
54};
55
56&external_mdio {
57	external_phy: ethernet-phy@0 {
58		/* Realtek RTL8211F (0x001cc916) */
59		reg = <0>;
60
61		reset-assert-us = <10000>;
62		reset-deassert-us = <80000>;
63		reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
64
65		interrupt-parent = <&gpio_intc>;
66		/* MAC_INTR on GPIOZ_15 */
67		interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
68	};
69};
70
71&i2c_B {
72	status = "okay";
73	pinctrl-names = "default";
74	pinctrl-0 = <&i2c_b_pins>;
75
76	rtc: rtc@51 {
77		compatible = "haoyu,hym8563";
78		reg = <0x51>;
79		#clock-cells = <0>;
80	};
81};
82
83/* WLAN: Atheros 10k (QCA9377) */
84&sd_emmc_a {
85	max-frequency = <200000000>;
86};
87
88/* eMMC */
89&sd_emmc_c {
90	max-frequency = <100000000>;
91};
92