diff --git a/arch/arm/dts/qcs404-evb.dtsi b/arch/arm/dts/qcs404-evb.dtsi
new file mode 100644
index 0000000..1065540
--- /dev/null
+++ b/arch/arm/dts/qcs404-evb.dtsi
@@ -0,0 +1,389 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, Linaro Limited
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include "qcs404.dtsi"
+#include "pms405.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+
+/ {
+	aliases {
+		serial0 = &blsp1_uart2;
+		serial1 = &blsp1_uart3;
+	};
+
+	chosen {
+		stdout-path = "serial0";
+	};
+
+	vph_pwr: vph-pwr-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vph_pwr";
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vdd_ch0_3p3:
+	vdd_esmps3_3p3: vdd-esmps3-3p3-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "eSMPS3_3P3";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	usb3_vbus_reg: regulator-usb3-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "VBUS_BOOST_5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&pms405_gpios 3 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_vbus_boost_pin>;
+		vin-supply = <&vph_pwr>;
+		enable-active-high;
+
+		/* TODO: Drop this when introducing role switching */
+		regulator-always-on;
+	};
+};
+
+&blsp1_uart3 {
+	status = "okay";
+
+	bluetooth {
+		compatible = "qcom,wcn3990-bt";
+		vddio-supply = <&vreg_l6_1p8>;
+		vddxo-supply = <&vreg_l5_1p8>;
+		vddrf-supply = <&vreg_l1_1p3>;
+		vddch0-supply = <&vdd_ch0_3p3>;
+
+		local-bd-address = [ 02 00 00 00 5a ad ];
+
+		max-speed = <3200000>;
+	};
+};
+
+&blsp1_dma {
+	qcom,controlled-remotely;
+};
+
+&blsp2_dma {
+	qcom,controlled-remotely;
+};
+
+&gcc {
+	protected-clocks = <GCC_BIMC_CDSP_CLK>,
+			   <GCC_CDSP_CFG_AHB_CLK>,
+			   <GCC_CDSP_BIMC_CLK_SRC>,
+			   <GCC_CDSP_TBU_CLK>,
+			   <141>, /* GCC_WCSS_Q6_AHB_CLK */
+			   <142>; /* GCC_WCSS_Q6_AXIM_CLK */
+};
+
+&pms405_spmi_regulators {
+	vdd_s3-supply = <&vph_pwr>;
+
+	pms405_s3: s3 {
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-name = "vdd_apc";
+		regulator-initial-mode = <1>;
+		regulator-min-microvolt = <1048000>;
+		regulator-max-microvolt = <1384000>;
+	};
+};
+
+&pcie {
+	status = "okay";
+
+	perst-gpios = <&tlmm 43 GPIO_ACTIVE_LOW>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&perst_state>;
+};
+
+&pcie_phy {
+	status = "okay";
+
+	vdda-vp-supply = <&vreg_l3_1p05>;
+	vdda-vph-supply = <&vreg_l5_1p8>;
+};
+
+&remoteproc_adsp {
+	status = "okay";
+};
+
+&remoteproc_cdsp {
+	status = "okay";
+};
+
+&remoteproc_wcss {
+	status = "okay";
+};
+
+&rpm_requests {
+	regulators {
+		compatible = "qcom,rpm-pms405-regulators";
+
+		vdd_s1-supply = <&vph_pwr>;
+		vdd_s2-supply = <&vph_pwr>;
+		vdd_s3-supply = <&vph_pwr>;
+		vdd_s4-supply = <&vph_pwr>;
+		vdd_s5-supply = <&vph_pwr>;
+		vdd_l1_l2-supply = <&vreg_s5_1p35>;
+		vdd_l3_l8-supply = <&vreg_s5_1p35>;
+		vdd_l4-supply = <&vreg_s5_1p35>;
+		vdd_l5_l6-supply = <&vreg_s4_1p8>;
+		vdd_l7-supply = <&vph_pwr>;
+		vdd_l9-supply = <&vreg_s5_1p35>;
+		vdd_l10_l11_l12_l13-supply = <&vph_pwr>;
+
+		vreg_s4_1p8: s4 {
+			regulator-min-microvolt = <1728000>;
+			regulator-max-microvolt = <1920000>;
+		};
+
+		vreg_s5_1p35: s5 {
+			regulator-min-microvolt = <1352000>;
+			regulator-max-microvolt = <1352000>;
+		};
+
+		vreg_l1_1p3: l1 {
+			regulator-min-microvolt = <1240000>;
+			regulator-max-microvolt = <1352000>;
+		};
+
+		vreg_l2_1p275: l2 {
+			regulator-min-microvolt = <1048000>;
+			regulator-max-microvolt = <1280000>;
+		};
+
+		vreg_l3_1p05: l3 {
+			regulator-min-microvolt = <1048000>;
+			regulator-max-microvolt = <1160000>;
+		};
+
+		vreg_l4_1p2: l4 {
+			regulator-min-microvolt = <1144000>;
+			regulator-max-microvolt = <1256000>;
+		};
+
+		vreg_l5_1p8: l5 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		vreg_l6_1p8: l6 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+
+		vreg_l7_1p8: l7 {
+			regulator-min-microvolt = <1616000>;
+			regulator-max-microvolt = <3000000>;
+		};
+
+		vreg_l8_1p2: l8 {
+			regulator-min-microvolt = <1136000>;
+			regulator-max-microvolt = <1352000>;
+		};
+
+		vreg_l10_3p3: l10 {
+			regulator-min-microvolt = <2936000>;
+			regulator-max-microvolt = <3088000>;
+		};
+
+		vreg_l11_sdc2: l11 {
+			regulator-min-microvolt = <2696000>;
+			regulator-max-microvolt = <3304000>;
+		};
+
+		vreg_l12_3p3: l12 {
+			regulator-min-microvolt = <3050000>;
+			regulator-max-microvolt = <3300000>;
+		};
+
+		vreg_l13_3p3: l13 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3300000>;
+		};
+	};
+};
+
+&sdcc1 {
+	status = "okay";
+
+	supports-cqe;
+	mmc-ddr-1_8v;
+	mmc-hs400-1_8v;
+	bus-width = <8>;
+	non-removable;
+
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&sdc1_on>;
+	pinctrl-1 = <&sdc1_off>;
+};
+
+&tlmm {
+	perst_state: perst-state {
+		pins = "gpio43";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+		output-low;
+	};
+
+	sdc1_on: sdc1-on-state {
+		clk-pins {
+			pins = "sdc1_clk";
+			bias-disable;
+			drive-strength = <16>;
+		};
+
+		cmd-pins {
+			pins = "sdc1_cmd";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		data-pins {
+			pins = "sdc1_data";
+			bias-pull-up;
+			drive-strength = <10>;
+		};
+
+		rclk-pins {
+			pins = "sdc1_rclk";
+			bias-pull-down;
+		};
+	};
+
+	sdc1_off: sdc1-off-state {
+		clk-pins {
+			pins = "sdc1_clk";
+			bias-disable;
+			drive-strength = <2>;
+		};
+
+		cmd-pins {
+			pins = "sdc1_cmd";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		data-pins {
+			pins = "sdc1_data";
+			bias-pull-up;
+			drive-strength = <2>;
+		};
+
+		rclk-pins {
+			pins = "sdc1_rclk";
+			bias-pull-down;
+		};
+	};
+
+	usb3_id_pin: usb3-id-state {
+		pins = "gpio116";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+};
+
+&pms405_gpios {
+	usb_vbus_boost_pin: usb-vbus-boost-state {
+		pinconf {
+			pins = "gpio3";
+			function = PMIC_GPIO_FUNC_NORMAL;
+			output-low;
+			power-source = <1>;
+		};
+	};
+	usb3_vbus_pin: usb3-vbus-state {
+		pinconf {
+			pins = "gpio12";
+			function = PMIC_GPIO_FUNC_NORMAL;
+			input-enable;
+			bias-pull-down;
+			power-source = <1>;
+		};
+	};
+};
+
+&usb2 {
+	status = "okay";
+};
+
+&usb2_phy_sec {
+	vdd-supply = <&vreg_l4_1p2>;
+	vdda1p8-supply = <&vreg_l5_1p8>;
+	vdda3p3-supply = <&vreg_l12_3p3>;
+	status = "okay";
+};
+
+&usb3 {
+	status = "okay";
+
+};
+
+&usb3_dwc3 {
+	dr_mode = "host";
+};
+
+&usb2_phy_prim {
+	vdd-supply = <&vreg_l4_1p2>;
+	vdda1p8-supply = <&vreg_l5_1p8>;
+	vdda3p3-supply = <&vreg_l12_3p3>;
+	status = "okay";
+};
+
+&usb3_phy {
+	vdd-supply = <&vreg_l3_1p05>;
+	vdda1p8-supply = <&vreg_l5_1p8>;
+	status = "okay";
+};
+
+&wifi {
+	status = "okay";
+	vdd-0.8-cx-mx-supply = <&vreg_l2_1p275>;
+	vdd-1.8-xo-supply = <&vreg_l5_1p8>;
+	vdd-1.3-rfa-supply = <&vreg_l1_1p3>;
+};
+
+/* PINCTRL - additions to nodes defined in qcs404.dtsi */
+
+&blsp1_uart2_default {
+	rx-pins {
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tx-pins {
+		drive-strength = <2>;
+		bias-disable;
+	};
+};
+
+&blsp1_uart3_default {
+	cts-pins {
+		bias-disable;
+	};
+
+	rts-tx-pins {
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	rx-pins {
+		bias-pull-up;
+	};
+};