1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
2/*
3 * Copyright 2018 Alexander Monakov <amonakov@gmail.com>
4 */
5/dts-v1/;
6
7#include "berlin2cd.dtsi"
8#include <dt-bindings/gpio/gpio.h>
9
10/ {
11	model = "Valve Steam Link";
12	compatible = "valve,steamlink", "marvell,berlin2cd", "marvell,berlin";
13
14	memory@0 {
15		device_type = "memory";
16		reg = <0x00000000 0x20000000>; /* 512 MB */
17	};
18
19	gpio-restart {
20		compatible = "gpio-restart";
21		gpios = <&porta 6 GPIO_ACTIVE_HIGH>;
22		active-delay = <100>;
23		inactive-delay = <10>;
24		wait-delay = <100>;
25		priority = <200>;
26	};
27};
28
29&cpu {
30	cpu-supply = <&vcpu>;
31	operating-points = <
32		/* kHz    uV */
33		1000000 1325000
34	>;
35};
36
37&i2c0 {
38	status = "okay";
39
40	/* There are two regulators on the board. One is accessible via I2C,
41	 * with buck1 providing SoC power (set up by bootloader to 1.325V or
42	 * less depending on leakage value in OTP), and buck2 likely used for
43	 * DRAM (providing 1.35V). The other regulator on the opposite side
44	 * of the board is probably supplying SDIO and NAND fixed voltages. */
45	regulator@19 {
46		compatible = "marvell,88pg868";
47		reg = <0x19>;
48
49		vcpu: buck1 {
50			regulator-boot-on;
51			regulator-always-on;
52			regulator-min-microvolt = <1000000>;
53			regulator-max-microvolt = <1325000>;
54		};
55	};
56};
57
58/* Fixed interface to on-board Marvell 8897 Wi-Fi/Bluetooth/NFC chip. */
59&sdhci0 {
60	keep-power-in-suspend;
61	non-removable;
62	status = "okay";
63};
64
65&uart0 {
66	/* RX/TX are routed to TP50/TP51 on the board. */
67	status = "okay";
68};
69
70/* The SoC is connected to on-board USB hub that in turn has one downstream
71 * port wired to the on-board Steam Controller wireless receiver chip. */
72&usb_phy1 { status = "okay"; };
73
74&usb1 {
75	dr_mode = "host";
76	status = "okay";
77};
78
79&eth1 { status = "okay"; };
80