ARM: tegra: Add p2371-2180 board

P2371-2180 is a P2180 CPU board married to a P2597 I/O board. The
combination contains SoC, DRAM, eMMC, SD card slot, HDMI, USB
micro-B port, Ethernet via USB3, USB3 host port, SATA, PCIe, and
two GPIO expansion headers.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/arch/arm/dts/tegra210-p2371-2180.dts b/arch/arm/dts/tegra210-p2371-2180.dts
new file mode 100644
index 0000000..5d9adcf
--- /dev/null
+++ b/arch/arm/dts/tegra210-p2371-2180.dts
@@ -0,0 +1,60 @@
+/dts-v1/;
+
+#include "tegra210.dtsi"
+
+/ {
+	model = "NVIDIA P2371-2180";
+	compatible = "nvidia,p2371-2180", "nvidia,tegra210";
+
+	chosen {
+		stdout-path = &uarta;
+	};
+
+	aliases {
+		i2c0 = "/i2c@0,7000d000";
+		sdhci0 = "/sdhci@0,700b0600";
+		sdhci1 = "/sdhci@0,700b0000";
+		usb0 = "/usb@0,7d000000";
+	};
+
+	memory {
+		reg = <0x0 0x80000000 0x0 0xc0000000>;
+	};
+
+	sdhci@0,700b0000 {
+		status = "okay";
+		cd-gpios = <&gpio TEGRA_GPIO(Z, 1) GPIO_ACTIVE_LOW>;
+		power-gpios = <&gpio TEGRA_GPIO(Z, 3) GPIO_ACTIVE_HIGH>;
+		wp-gpios = <&gpio TEGRA_GPIO(Z, 4) GPIO_ACTIVE_LOW>;
+		bus-width = <4>;
+	};
+
+	sdhci@0,700b0600 {
+		status = "okay";
+		bus-width = <8>;
+	};
+
+	i2c@0,7000d000 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	usb@0,7d000000 {
+		status = "okay";
+		dr_mode = "otg";
+		nvidia,vbus-gpio = <&gpio TEGRA_GPIO(CC, 4) GPIO_ACTIVE_HIGH>;
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk32k_in: clock@0 {
+			compatible = "fixed-clock";
+			reg = <0>;
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
+	};
+};