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 79ð1 { status = "okay"; }; 80