boot/dts/berlin2cd-valve-steamlink.dts

0001 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
0002 /*
0003  * Copyright 2018 Alexander Monakov <amonakov@gmail.com>
0004  */
0005 /dts-v1/;
0006
0007 #include "berlin2cd.dtsi"
0008 #include <dt-bindings/gpio/gpio.h>
0009
0010 / {
0011         model = "Valve Steam Link";
0012         compatible = "valve,steamlink", "marvell,berlin2cd", "marvell,berlin";
0013
0014         memory@0 {
0015                 device_type = "memory";
0016                 reg = <0x00000000 0x20000000>; /* 512 MB */
0017         };
0018
0019         gpio-restart {
0020                 compatible = "gpio-restart";
0021                 gpios = <&porta 6 GPIO_ACTIVE_HIGH>;
0022                 active-delay = <100>;
0023                 inactive-delay = <10>;
0024                 wait-delay = <100>;
0025                 priority = <200>;
0026         };
0027 };
0028
0029 &cpu {
0030         cpu-supply = <&vcpu>;
0031         operating-points = <
0032                 /* kHz    uV */
0033                 1000000 1325000
0034         >;
0035 };
0036
0037 &i2c0 {
0038         status = "okay";
0039
0040         /* There are two regulators on the board. One is accessible via I2C,
0041          * with buck1 providing SoC power (set up by bootloader to 1.325V or
0042          * less depending on leakage value in OTP), and buck2 likely used for
0043          * DRAM (providing 1.35V). The other regulator on the opposite side
0044          * of the board is probably supplying SDIO and NAND fixed voltages. */
0045         regulator@19 {
0046                 compatible = "marvell,88pg868";
0047                 reg = <0x19>;
0048
0049                 vcpu: buck1 {
0050                         regulator-boot-on;
0051                         regulator-always-on;
0052                         regulator-min-microvolt = <1000000>;
0053                         regulator-max-microvolt = <1325000>;
0054                 };
0055         };
0056 };
0057
0058 /* Fixed interface to on-board Marvell 8897 Wi-Fi/Bluetooth/NFC chip. */
0059 &sdhci0 {
0060         keep-power-in-suspend;
0061         non-removable;
0062         status = "okay";
0063 };
0064
0065 &uart0 {
0066         /* RX/TX are routed to TP50/TP51 on the board. */
0067         status = "okay";
0068 };
0069
0070 /* The SoC is connected to on-board USB hub that in turn has one downstream
0071  * port wired to the on-board Steam Controller wireless receiver chip. */
0072 &usb_phy1 { status = "okay"; };
0073
0074 &usb1 {
0075         dr_mode = "host";
0076         status = "okay";
0077 };
0078
0079 &eth1 { status = "okay"; };