ARM: SoCFPGA: add Terasic DE10-Nano board support

The Terasic DE10-Nano board is based on CycloneV SoCFPGA (5CSEBA6) with

What has been tested to work:
- SD card
- Gigabit network
- FPGA (FPPx16 & FPPx32)

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Link: https://lore.barebox.org/20210531194019.951-1-gwenj@trabucayre.com
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 127 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a637869fb6..e5c7fa6293 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -106,6 +106,7 @@ lwl-$(CONFIG_MACH_SOCFPGA_ALTERA_SOCDK) += socfpga_cyclone5_socdk.dtb.o
 lwl-$(CONFIG_MACH_SOCFPGA_EBV_SOCRATES) += socfpga_cyclone5_socrates.dtb.o
 lwl-$(CONFIG_MACH_SOCFPGA_REFLEX_ACHILLES) += socfpga_arria10_achilles.dtb.o
 lwl-$(CONFIG_MACH_SOCFPGA_TERASIC_DE0_NANO_SOC) += socfpga_cyclone5_de0_nano_soc.dtb.o
+lwl-$(CONFIG_MACH_SOCFPGA_TERASIC_DE10_NANO) += socfpga_cyclone5_de10_nano.dtb.o
 lwl-$(CONFIG_MACH_SOCFPGA_TERASIC_SOCKIT) += socfpga_cyclone5_sockit.dtb.o
 lwl-$(CONFIG_MACH_SOLIDRUN_CUBOX) += dove-cubox-bb.dtb.o
 lwl-$(CONFIG_MACH_SOLIDRUN_MICROSOM) += imx6dl-hummingboard.dtb.o imx6q-hummingboard.dtb.o \
diff --git a/arch/arm/dts/socfpga_cyclone5_de10_nano.dts b/arch/arm/dts/socfpga_cyclone5_de10_nano.dts
new file mode 100644
index 0000000000..da6da02381
--- /dev/null
+++ b/arch/arm/dts/socfpga_cyclone5_de10_nano.dts
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+ * socfpga_cyclone5_de10_nano.dts - Device Tree File for Terasic DE10-Nano
+ * Copyright (C) 2021 Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
+ */
+
+#include <arm/socfpga_cyclone5.dtsi>
+#include "socfpga.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Terasic DE10-Nano";
+	compatible = "terasic,de10-nano", "altr,socfpga-cyclone5", "altr,socfpga";
+
+	chosen {
+		bootargs = "earlyprintk";
+		stdout-path = &uart0;
+
+		environment {
+			compatible = "barebox,environment";
+			device-path = &mmc, "partname:1";
+			file-path = "barebox.env";
+		};
+	};
+
+	memory@0 {
+		name = "memory";
+		device_type = "memory";
+		reg = <0x0 0x40000000>; /* 1GB */
+	};
+
+	aliases {
+		ethernet0 = &gmac1;
+	};
+
+	regulator_3_3v: 3-3-v-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		hps_hkey0 {
+			label = "HPS_KEY";
+			gpios = <&portb 25 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		hps0 {
+			label = "hps_led0";
+			gpios = <&portb 24 0>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};
+
+&gmac1 {
+	status = "okay";
+	phy-mode = "rgmii";
+
+	txd0-skew-ps = <0>; /* -420ps */
+	txd1-skew-ps = <0>; /* -420ps */
+	txd2-skew-ps = <0>; /* -420ps */
+	txd3-skew-ps = <0>; /* -420ps */
+	rxd0-skew-ps = <420>; /* 0ps */
+	rxd1-skew-ps = <420>; /* 0ps */
+	rxd2-skew-ps = <420>; /* 0ps */
+	rxd3-skew-ps = <420>; /* 0ps */
+	txen-skew-ps = <0>; /* -420ps */
+	txc-skew-ps = <1860>; /* 960ps */
+	rxdv-skew-ps = <420>; /* 0ps */
+	rxc-skew-ps = <1680>; /* 780ps */
+
+	max-frame-size = <3800>;
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+	clock-frequency = <100000>;
+
+	adxl345: adxl345@53 {
+		compatible = "adi,adxl345";
+		reg = <0x53>;
+
+		interrupt-parent = <&portc>;
+		interrupts = <3 2>;
+	};
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&regulator_3_3v>;
+	vqmmc-supply = <&regulator_3_3v>;
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};