summaryrefslogtreecommitdiff
path: root/arch/arm/boot/dts/berlin2cd-valve-steamlink.dts
diff options
context:
space:
mode:
authorAlexander Monakov <amonakov@ispras.ru>2018-03-18 20:12:40 +0300
committerJisheng Zhang <Jisheng.Zhang@synaptics.com>2018-05-24 10:11:54 +0300
commitdbbc3d79e7bf9f61118a894b32ca4efaae499da1 (patch)
tree801ca0f23383a507f930f62c13e12da06a361ada /arch/arm/boot/dts/berlin2cd-valve-steamlink.dts
parent13cb48c74ab435930e5beeb2834f629526b82416 (diff)
downloadlinux-dbbc3d79e7bf9f61118a894b32ca4efaae499da1.tar.xz
ARM: dts: berlin2cd: add Valve Steam Link board
Valve Steam Link is a consumer device built around the Marvell BG2CD SoC. This board file enables the UART, USB and Ethernet interfaces as well as internal I2C and SDIO, and adds SoC voltage regulator and board-specific GPIO restart method info. Cc: Sam Lantinga <saml@valvesoftware.com> Signed-off-by: Alexander Monakov <amonakov@ispras.ru> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Diffstat (limited to 'arch/arm/boot/dts/berlin2cd-valve-steamlink.dts')
-rw-r--r--arch/arm/boot/dts/berlin2cd-valve-steamlink.dts79
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/berlin2cd-valve-steamlink.dts b/arch/arm/boot/dts/berlin2cd-valve-steamlink.dts
new file mode 100644
index 000000000000..79ac842ae461
--- /dev/null
+++ b/arch/arm/boot/dts/berlin2cd-valve-steamlink.dts
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2018 Alexander Monakov <amonakov@gmail.com>
+ */
+/dts-v1/;
+
+#include "berlin2cd.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+ model = "Valve Steam Link";
+ compatible = "valve,steamlink", "marvell,berlin2cd", "marvell,berlin";
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x20000000>; /* 512 MB */
+ };
+
+ gpio-restart {
+ compatible = "gpio-restart";
+ gpios = <&porta 6 GPIO_ACTIVE_HIGH>;
+ active-delay = <100>;
+ inactive-delay = <10>;
+ wait-delay = <100>;
+ priority = <200>;
+ };
+};
+
+&cpu {
+ cpu-supply = <&vcpu>;
+ operating-points = <
+ /* kHz uV */
+ 1000000 1325000
+ >;
+};
+
+&i2c0 {
+ status = "okay";
+
+ /* There are two regulators on the board. One is accessible via I2C,
+ * with buck1 providing SoC power (set up by bootloader to 1.325V or
+ * less depending on leakage value in OTP), and buck2 likely used for
+ * DRAM (providing 1.35V). The other regulator on the opposite side
+ * of the board is probably supplying SDIO and NAND fixed voltages. */
+ regulator@19 {
+ compatible = "marvell,88pg868";
+ reg = <0x19>;
+
+ vcpu: buck1 {
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1325000>;
+ };
+ };
+};
+
+/* Fixed interface to on-board Marvell 8897 Wi-Fi/Bluetooth/NFC chip. */
+&sdhci0 {
+ keep-power-in-suspend;
+ non-removable;
+ status = "okay";
+};
+
+&uart0 {
+ /* RX/TX are routed to TP50/TP51 on the board. */
+ status = "okay";
+};
+
+/* The SoC is connected to on-board USB hub that in turn has one downstream
+ * port wired to the on-board Steam Controller wireless receiver chip. */
+&usb_phy1 { status = "okay"; };
+
+&usb1 {
+ dr_mode = "host";
+ status = "okay";
+};
+
+&eth1 { status = "okay"; };