diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 9c593b2..820ee97 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -180,7 +180,8 @@
 	tegra210-e2220-1170.dtb \
 	tegra210-p2371-0000.dtb \
 	tegra210-p2371-2180.dtb \
-	tegra210-p2571.dtb
+	tegra210-p2571.dtb \
+	tegra210-p3450-0000.dtb
 
 dtb-$(CONFIG_ARCH_MVEBU) +=			\
 	armada-3720-db.dtb			\
diff --git a/arch/arm/dts/tegra210-p3450-0000.dts b/arch/arm/dts/tegra210-p3450-0000.dts
new file mode 100644
index 0000000..9ef744a
--- /dev/null
+++ b/arch/arm/dts/tegra210-p3450-0000.dts
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  (C) Copyright 2019-2020 NVIDIA Corporation <www.nvidia.com>
+ */
+/dts-v1/;
+
+#include "tegra210.dtsi"
+
+/ {
+	model = "NVIDIA Jetson Nano Developer Kit";
+	compatible = "nvidia,p3450-0000", "nvidia,tegra210";
+
+	chosen {
+		stdout-path = &uarta;
+	};
+
+	aliases {
+		ethernet = "/pcie@1003000/pci@2,0/ethernet@0,0";
+		i2c0 = "/i2c@7000d000";
+		i2c2 = "/i2c@7000c400";
+		i2c3 = "/i2c@7000c500";
+		i2c4 = "/i2c@7000c700";
+		mmc0 = "/sdhci@700b0600";
+		mmc1 = "/sdhci@700b0000";
+		spi0 = "/spi@70410000";
+		usb0 = "/usb@7d000000";
+	};
+
+	memory {
+		reg = <0x0 0x80000000 0x0 0xc0000000>;
+	};
+
+	pcie@1003000 {
+		status = "okay";
+
+		pci@1,0 {
+			status = "okay";
+		};
+
+		pci@2,0 {
+			status = "okay";
+
+			ethernet@0,0 {
+				reg = <0x000000 0 0 0 0>;
+				local-mac-address = [ 00 00 00 00 00 00 ];
+			};
+		};
+	};
+
+	serial@70006000 {
+		status = "okay";
+	};
+
+	padctl@7009f000 {
+		pinctrl-0 = <&padctl_default>;
+		pinctrl-names = "default";
+
+		padctl_default: pinmux {
+			xusb {
+				nvidia,lanes = "otg-1", "otg-2";
+				nvidia,function = "xusb";
+				nvidia,iddq = <0>;
+			};
+
+			usb3 {
+				nvidia,lanes = "pcie-5", "pcie-6";
+				nvidia,function = "usb3";
+				nvidia,iddq = <0>;
+			};
+
+			pcie-x1 {
+				nvidia,lanes = "pcie-0";
+				nvidia,function = "pcie-x1";
+				nvidia,iddq = <0>;
+			};
+
+			pcie-x4 {
+				nvidia,lanes = "pcie-1", "pcie-2",
+					       "pcie-3", "pcie-4";
+				nvidia,function = "pcie-x4";
+				nvidia,iddq = <0>;
+			};
+
+			sata {
+				nvidia,lanes = "sata-0";
+				nvidia,function = "sata";
+				nvidia,iddq = <0>;
+			};
+		};
+	};
+
+	sdhci@700b0000 {
+		status = "okay";
+		cd-gpios = <&gpio TEGRA_GPIO(Z, 1) GPIO_ACTIVE_LOW>;
+		power-gpios = <&gpio TEGRA_GPIO(Z, 3) GPIO_ACTIVE_HIGH>;
+		bus-width = <4>;
+	};
+
+	sdhci@700b0600 {
+		status = "okay";
+		bus-width = <8>;
+		non-removable;
+	};
+
+	i2c@7000c400 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	i2c@7000c500 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	i2c@7000c700 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <400000>;
+	};
+
+	spi@70410000 {
+		status = "okay";
+		spi-max-frequency = <80000000>;
+	};
+
+	usb@7d000000 {
+		status = "okay";
+		dr_mode = "peripheral";
+	};
+
+	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>;
+		};
+	};
+};
diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c
index 787ff97..224efc9 100644
--- a/arch/arm/mach-tegra/board2.c
+++ b/arch/arm/mach-tegra/board2.c
@@ -217,6 +217,31 @@
 		arch_timer_init();
 #endif
 
+#if defined(CONFIG_DISABLE_SDMMC1_EARLY)
+	/*
+	 * Turn off (reset/disable) SDMMC1 on Nano here, before GPIO INIT.
+	 * We do this because earlier bootloaders have enabled power to
+	 * SDMMC1 on Nano, and toggling power-gpio (PZ3) in pinmux_init()
+	 * results in power being back-driven into the SD-card and SDMMC1
+	 * HW, which is 'bad' as per the HW team.
+	 *
+	 * From the HW team: "LDO2 from the PMIC has already been set to 3.3v in
+	 * nvtboot/CBoot on Nano (for SD-card boot). So when U-Boot's GPIO_INIT
+	 * table sets PZ3 to OUT0 as per the pinmux spreadsheet, it turns off
+	 * the loadswitch. When PZ3 is 0 and not driving, essentially the SDCard
+	 * voltage turns off. Since the SDCard voltage is no longer there, the
+	 * SDMMC CLK/DAT lines are backdriving into what essentially is a
+	 * powered-off SDCard, that's why the voltage drops from 3.3V to ~1.6V"
+	 *
+	 * Note that this can probably be removed when we change over to storing
+	 * all BL components on QSPI on Nano, and U-Boot then becomes the first
+	 * one to turn on SDMMC1 power. Another fix would be to have CBoot
+	 * disable power/gate SDMMC1 off before handing off to U-Boot/kernel.
+	 */
+	reset_set_enable(PERIPH_ID_SDMMC1, 1);
+	clock_set_enable(PERIPH_ID_SDMMC1, 0);
+#endif	/* CONFIG_DISABLE_SDMMC1_EARLY */
+
 	pinmux_init();
 	board_init_uart_f();
 
diff --git a/arch/arm/mach-tegra/tegra210/Kconfig b/arch/arm/mach-tegra/tegra210/Kconfig
index 3637473..97ed8e0 100644
--- a/arch/arm/mach-tegra/tegra210/Kconfig
+++ b/arch/arm/mach-tegra/tegra210/Kconfig
@@ -35,6 +35,12 @@
 	help
 	  P2571 is a P2530 married to a P1963 I/O board
 
+config TARGET_P3450_0000
+	bool "NVIDIA Jetson Nano Developer Kit"
+	select BOARD_LATE_INIT
+	help
+	  P3450-0000 is a P3448 CPU board married to a P3449 I/O board.
+
 endchoice
 
 config SYS_SOC
@@ -44,5 +50,6 @@
 source "board/nvidia/p2371-0000/Kconfig"
 source "board/nvidia/p2371-2180/Kconfig"
 source "board/nvidia/p2571/Kconfig"
+source "board/nvidia/p3450-0000/Kconfig"
 
 endif