diff --git a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
index eb446cdc4ab6..9e2887fa51a7 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov920.dtsi
@@ -330,6 +330,499 @@ serial_0: serial@10880000 {
 			};
 		};
 
+		usi_1: usi@108a00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x108a00c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1008>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI01_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_1: serial@108a0000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x108a0000 0xc0>;
+				interrupts = <GIC_SPI 766 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart1_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI01_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <256>;
+				status = "disabled";
+			};
+		};
+
+		usi_2: usi@108c00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x108c00c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1010>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI02_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_2: serial@108c0000 {
+			compatible = "samsung,exynosautov920-uart",
+				     "samsung,exynos850-uart";
+				reg = <0x108c0000 0xc0>;
+				interrupts = <GIC_SPI 768 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart2_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI02_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_3: usi@108e00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x108e00c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1018>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI03_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_3: serial@108e0000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x108e0000 0xc0>;
+				interrupts = <GIC_SPI 770 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart3_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI03_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_4: usi@109000c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x109000c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1020>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI04_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_4: serial@10900000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10900000 0xc0>;
+				interrupts = <GIC_SPI 772 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart4_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI04_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_5: usi@109200c0 {
+				compatible = "samsung,exynosautov920-usi",
+					     "samsung,exynos850-usi";
+				reg = <0x109200c0 0x20>;
+				samsung,sysreg = <&syscon_peric0 0x1028>;
+				samsung,mode = <USI_V2_UART>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI05_USI>;
+				clock-names = "pclk", "ipclk";
+				status = "disabled";
+
+			serial_5: serial@10920000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10920000 0xc0>;
+				interrupts = <GIC_SPI 774 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart5_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI05_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_6: usi@109400c0 {
+				compatible = "samsung,exynosautov920-usi",
+					     "samsung,exynos850-usi";
+			reg = <0x109400c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1030>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI06_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_6: serial@10940000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10940000 0xc0>;
+				interrupts = <GIC_SPI 776 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart6_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI06_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_7: usi@109600c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x109600c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1038>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI07_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_7: serial@10960000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10960000 0xc0>;
+				interrupts = <GIC_SPI 778 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart7_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI07_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_8: usi@109800c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x109800c0 0x20>;
+			samsung,sysreg = <&syscon_peric0 0x1040>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+				 <&cmu_peric0 CLK_DOUT_PERIC0_USI08_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_8: serial@10980000 {
+			compatible = "samsung,exynosautov920-uart",
+				     "samsung,exynos850-uart";
+				reg = <0x10980000 0xc0>;
+				interrupts = <GIC_SPI 780 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart8_bus>;
+				clocks = <&cmu_peric0 CLK_MOUT_PERIC0_NOC_USER>,
+					 <&cmu_peric0 CLK_DOUT_PERIC0_USI08_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_9: usi@10c800c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10c800c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1000>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI09_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_9: serial@10c8000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10c80000 0xc0>;
+				interrupts = <GIC_SPI 787 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart9_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI09_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <256>;
+				status = "disabled";
+			};
+		};
+
+		usi_10: usi@10ca00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10ca00c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1008>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI10_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_10: serial@10ca0000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10ca0000 0xc0>;
+				interrupts = <GIC_SPI 789 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart10_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI10_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_11: usi@10cc00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10cc00c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1010>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI11_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_11: serial@10cc0000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10cc0000 0xc0>;
+				interrupts = <GIC_SPI 791 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart11_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI11_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_12: usi@10ce00c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10ce00c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1018>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI12_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_12: serial@10ce0000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10ce0000 0xc0>;
+				interrupts = <GIC_SPI 793 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart12_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI12_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_13: usi@10d000c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10d000c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1020>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI13_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_13: serial@10d00000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10d00000 0xc0>;
+				interrupts = <GIC_SPI 795 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart13_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI13_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_14: usi@10d200c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10d200c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1028>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI14_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_14: serial@10d20000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10d20000 0xc0>;
+				interrupts = <GIC_SPI 797 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart14_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI14_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_15: usi@10d400c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10d400c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1030>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI15_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_15: serial@10d40000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10d40000 0xc0>;
+				interrupts = <GIC_SPI 799 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart15_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI15_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_16: usi@10d600c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10d600c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1038>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI16_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_16: serial@10d60000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10d60000 0xc0>;
+				interrupts = <GIC_SPI 801 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart16_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI16_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
+		usi_17: usi@10d800c0 {
+			compatible = "samsung,exynosautov920-usi",
+				     "samsung,exynos850-usi";
+			reg = <0x10d800c0 0x20>;
+			samsung,sysreg = <&syscon_peric1 0x1040>;
+			samsung,mode = <USI_V2_UART>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+			clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+				 <&cmu_peric1 CLK_DOUT_PERIC1_USI17_USI>;
+			clock-names = "pclk", "ipclk";
+			status = "disabled";
+
+			serial_17: serial@10d80000 {
+				compatible = "samsung,exynosautov920-uart",
+					     "samsung,exynos850-uart";
+				reg = <0x10d80000 0xc0>;
+				interrupts = <GIC_SPI 803 IRQ_TYPE_LEVEL_HIGH>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&uart17_bus>;
+				clocks = <&cmu_peric1 CLK_MOUT_PERIC1_NOC_USER>,
+					 <&cmu_peric1 CLK_DOUT_PERIC1_USI17_USI>;
+				clock-names = "uart", "clk_uart_baud0";
+				samsung,uart-fifosize = <64>;
+				status = "disabled";
+			};
+		};
+
 		pwm: pwm@109b0000 {
 			compatible = "samsung,exynosautov920-pwm",
 				     "samsung,exynos4210-pwm";
