diff --git a/arch/arm/dts/mt8183.dtsi b/arch/arm/dts/mt8183.dtsi
new file mode 100644
index 0000000..294aa2b
--- /dev/null
+++ b/arch/arm/dts/mt8183.dtsi
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Copyright (C) 2021 BayLibre, SAS
+ * Author: Ben Ho <ben.ho@mediatek.com>
+ *         Erin Lo <erin.lo@mediatek.com>
+ *         Fabien Parent <fparent@baylibre.com>
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/mt8183-clk.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/phy/phy.h>
+
+/ {
+	compatible = "mediatek,mt8183";
+	interrupt-parent = <&sysirq>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+				core2 {
+					cpu = <&cpu2>;
+				};
+				core3 {
+					cpu = <&cpu3>;
+				};
+			};
+
+			cluster1 {
+				core0 {
+					cpu = <&cpu4>;
+				};
+				core1 {
+					cpu = <&cpu5>;
+				};
+				core2 {
+					cpu = <&cpu6>;
+				};
+				core3 {
+					cpu = <&cpu7>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x000>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <741>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x001>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <741>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x002>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <741>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x003>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <741>;
+		};
+
+		cpu4: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x100>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu5: cpu@101 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x101>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu6: cpu@102 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x102>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <1024>;
+		};
+
+		cpu7: cpu@103 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a73";
+			reg = <0x103>;
+			enable-method = "psci";
+			capacity-dmips-mhz = <1024>;
+		};
+	};
+
+	clk26m: oscillator {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <26000000>;
+		clock-output-names = "clk26m";
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		watchdog: watchdog@10007000 {
+			compatible = "mediatek,mt8183-wdt",
+				      "mediatek,wdt";
+			reg = <0 0x10007000 0 0x100>;
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <4>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x40000>,  /* GICD */
+			      <0 0x0c100000 0 0x200000>, /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
+			ppi-partitions {
+				ppi_cluster0: interrupt-partition-0 {
+					affinity = <&cpu0 &cpu1 &cpu2 &cpu3>;
+				};
+				ppi_cluster1: interrupt-partition-1 {
+					affinity = <&cpu4 &cpu5 &cpu6 &cpu7>;
+				};
+			};
+		};
+
+		sysirq: interrupt-controller@c530a80 {
+			compatible = "mediatek,mt8183-sysirq",
+				     "mediatek,mt6577-sysirq";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			reg = <0 0x0c530a80 0 0x50>;
+		};
+
+		topckgen: syscon@10000000 {
+			compatible = "mediatek,mt8183-topckgen", "syscon";
+			reg = <0 0x10000000 0 0x1000>;
+			#clock-cells = <1>;
+		};
+
+		infracfg: syscon@10001000 {
+			compatible = "mediatek,mt8183-infracfg", "syscon";
+			reg = <0 0x10001000 0 0x1000>;
+			#clock-cells = <1>;
+		};
+
+		apmixedsys: syscon@1000c000 {
+			compatible = "mediatek,mt8183-apmixedsys", "syscon";
+			reg = <0 0x1000c000 0 0x1000>;
+			#clock-cells = <1>;
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt8183-uart",
+				     "mediatek,hsuart";
+			reg = <0 0x11002000 0 0x1000>;
+			interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
+			clock-frequency = <26000000>;
+			clocks = <&clk26m>, <&infracfg CLK_INFRA_UART0>;
+			clock-names = "baud", "bus";
+			status = "disabled";
+		};
+
+		mmc0: mmc@11230000 {
+			compatible = "mediatek,mt8183-mmc";
+			reg = <0 0x11230000 0 0x1000>,
+			      <0 0x11f50000 0 0x1000>;
+			interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+			clocks = <&topckgen CLK_TOP_MUX_MSDC50_0>,
+				 <&infracfg CLK_INFRA_MSDC0>,
+				 <&infracfg CLK_INFRA_MSDC0_SCK>;
+			clock-names = "source", "hclk", "source_cg";
+			status = "disabled";
+		};
+
+		u3phy: usb-phy@11f40000 {
+			compatible = "mediatek,generic-tphy-v2";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			status = "okay";
+
+			u2port0: usb-phy2@11f40000 {
+				reg = <0 0x11f40000 0 0x700>;
+				clocks = <&clk26m>;
+				clock-names = "ref";
+				#phy-cells = <1>;
+				status = "okay";
+			};
+
+			u3port0: usb-phy3@11f40700 {
+				reg = <0 0x11f40700 0 0x900>;
+				clocks = <&clk26m>;
+				clock-names = "ref";
+				#phy-cells = <1>;
+				status = "okay";
+			};
+		};
+
+		usb: usb@11200000 {
+			compatible ="mediatek,mt8183-mtu3", "mediatek,mtu3";
+			reg = <0 0x11200000 0 0x3e00>,
+			      <0 0x11203e00 0 0x0100>;
+			reg-names = "mac", "ippc";
+			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_LOW>;
+			phys = <&u2port0 PHY_TYPE_USB2>;
+			clocks = <&infracfg CLK_INFRA_UNIPRO_SCK>,
+				 <&infracfg CLK_INFRA_USB>;
+			clock-names = "sys_ck", "ref_ck";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			status = "disabled";
+
+			ssusb: ssusb@11200000 {
+				compatible = "mediatek,ssusb";
+				reg = <0 0x11200000 0 0x3e00>;
+				reg-names = "mac";
+				interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_LOW>;
+				status = "disabled";
+			};
+
+			usb_host: xhci@11200000 {
+				compatible = "mediatek,mtk-xhci";
+				reg = <0 0x11200000 0 0x1000>;
+				reg-names = "mac";
+				interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_LOW>;
+				clocks = <&infracfg CLK_INFRA_UNIPRO_SCK>,
+					 <&infracfg CLK_INFRA_USB>;
+				clock-names = "sys_ck", "ref_ck";
+				status = "disabled";
+			};
+		};
+	};
+};