arch/arm/boot/dts/berlin2cd-valve-steamlink.dts

   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"; };