socfpga: add support for Terasic DE1-SoC board

Add CycloneV based Terasic DE1-SoC board. The board boots
from SD/MMC. Ethernet and USB host is supported.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Marek Vasut <marex@denx.de>

arch/arm/dts/Makefile

@@ -133,6 +133,7 @@ dtb-$(CONFIG_ARCH_SOCFPGA) +=				\
 	socfpga_cyclone5_mcvevk.dtb			\
 	socfpga_cyclone5_socdk.dtb			\
 	socfpga_cyclone5_de0_nano_soc.dtb			\
+	socfpga_cyclone5_de1_soc.dtb			\
 	socfpga_cyclone5_sockit.dtb			\
 	socfpga_cyclone5_socrates.dtb			\
 	socfpga_cyclone5_sr1500.dtb			\

arch/arm/dts/socfpga_cyclone5_de1_soc.dts

@@ -0,0 +1,66 @@
+/*
+ * Copyright Altera Corporation (C) 2015
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "socfpga_cyclone5.dtsi"
+
+/ {
+	model = "Terasic DE1-SoC";
+	compatible = "altr,socfpga-cyclone5", "altr,socfpga";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	aliases {
+		ethernet0 = &gmac1;
+		udc0 = &usb1;
+	};
+
+	memory {
+		name = "memory";
+		device_type = "memory";
+		reg = <0x0 0x40000000>; /* 1GB */
+	};
+
+	soc {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&gmac1 {
+	status = "okay";
+	phy-mode = "rgmii";
+
+	rxd0-skew-ps = <420>;
+	rxd1-skew-ps = <420>;
+	rxd2-skew-ps = <420>;
+	rxd3-skew-ps = <420>;
+	txen-skew-ps = <0>;
+	txc-skew-ps = <1860>;
+	rxdv-skew-ps = <420>;
+	rxc-skew-ps = <1680>;
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&mmc0 {
+	status = "okay";
+	u-boot,dm-pre-reloc;
+};
+
+&usb1 {
+	status = "okay";
+};