diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 1a718157d1a68..962e0003a8d62 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1214,6 +1214,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp151a-prtt1a.dtb \
 	stm32mp151a-prtt1c.dtb \
 	stm32mp151a-prtt1s.dtb \
+	stm32mp151a-dhcor-testbench.dtb \
 	stm32mp153c-dhcom-drc02.dtb \
 	stm32mp153c-dhcor-drc-compact.dtb \
 	stm32mp157a-avenger96.dtb \
diff --git a/arch/arm/boot/dts/stm32mp151a-dhcor-testbench.dts b/arch/arm/boot/dts/stm32mp151a-dhcor-testbench.dts
new file mode 100644
index 0000000000000..e0f828ecc2faf
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp151a-dhcor-testbench.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright (C) 2022 Marek Vasut <marex@denx.de>
+ */
+
+/dts-v1/;
+
+#include "stm32mp151.dtsi"
+#include "stm32mp15xx-dhcor-som.dtsi"
+#include "stm32mp15xx-dhcor-testbench.dtsi"
+
+/ {
+	model = "DH electronics STM32MP151A DHCOR Testbench";
+	compatible = "dh,stm32mp151a-dhcor-testbench",
+		     "dh,stm32mp151a-dhcor-som",
+		     "st,stm32mp151";
+};
diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-testbench.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-testbench.dtsi
new file mode 100644
index 0000000000000..c7dcee4ee3d1d
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-testbench.dtsi
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+/*
+ * Copyright (C) 2022 Marek Vasut <marex@denx.de>
+ */
+
+/ {
+	aliases {
+		ethernet0 = &ethernet0;
+		mmc0 = &sdmmc1;
+		mmc1 = &sdmmc2;
+		serial0 = &uart4;
+		serial1 = &uart7;
+		spi0 = &qspi;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	sd_switch: regulator-sd_switch {
+		compatible = "regulator-gpio";
+		regulator-name = "sd_switch";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <2900000>;
+		regulator-type = "voltage";
+		regulator-always-on;
+
+		gpios = <&gpioi 5 GPIO_ACTIVE_HIGH>;
+		gpios-states = <0>;
+		states = <1800000 0x1>,
+			 <2900000 0x0>;
+	};
+};
+
+&adc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&adc12_ain_pins_b>;
+	vdd-supply = <&vdd>;
+	vdda-supply = <&vdda>;
+	vref-supply = <&vdda>;
+	status = "okay";
+
+	adc1: adc@0 {
+		st,adc-channels = <0 1 6>;
+		st,min-sample-time-nsecs = <5000>;
+		status = "okay";
+	};
+
+	adc2: adc@100 {
+		st,adc-channels = <0 1 2>;
+		st,min-sample-time-nsecs = <5000>;
+		status = "okay";
+	};
+};
+
+&ethernet0 {
+	status = "okay";
+	pinctrl-0 = <&ethernet0_rgmii_pins_c>;
+	pinctrl-1 = <&ethernet0_rgmii_sleep_pins_c>;
+	pinctrl-names = "default", "sleep";
+	phy-mode = "rgmii";
+	max-speed = <1000>;
+	phy-handle = <&phy0>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		reset-gpios = <&gpioz 2 GPIO_ACTIVE_LOW>;
+		reset-delay-us = <1000>;
+		reset-post-delay-us = <1000>;
+
+		phy0: ethernet-phy@7 {
+			reg = <7>;
+
+			rxc-skew-ps = <1500>;
+			rxdv-skew-ps = <540>;
+			rxd0-skew-ps = <420>;
+			rxd1-skew-ps = <420>;
+			rxd2-skew-ps = <420>;
+			rxd3-skew-ps = <420>;
+
+			txc-skew-ps = <1440>;
+			txen-skew-ps = <540>;
+			txd0-skew-ps = <420>;
+			txd1-skew-ps = <420>;
+			txd2-skew-ps = <420>;
+			txd3-skew-ps = <420>;
+		};
+	};
+};
+
+&sdmmc1 {
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc1_b4_pins_a &sdmmc1_dir_pins_b>;
+	pinctrl-1 = <&sdmmc1_b4_od_pins_a &sdmmc1_dir_pins_b>;
+	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a &sdmmc1_dir_sleep_pins_b>;
+	cd-gpios = <&gpioi 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	disable-wp;
+	st,sig-dir;
+	st,neg-edge;
+	st,use-ckin;
+	bus-width = <4>;
+	vmmc-supply = <&vdd_sd>;
+	vqmmc-supply = <&sd_switch>;
+	status = "okay";
+};
+
+&sdmmc2 {
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_c>;
+	pinctrl-1 = <&sdmmc2_b4_od_pins_a &sdmmc2_d47_pins_c>;
+	pinctrl-2 = <&sdmmc2_b4_sleep_pins_a &sdmmc2_d47_sleep_pins_c>;
+	bus-width = <8>;
+	mmc-ddr-1_8v;
+	no-sd;
+	no-sdio;
+	non-removable;
+	st,neg-edge;
+	vmmc-supply = <&v3v3>;
+	vqmmc-supply = <&v3v3>;
+	status = "okay";
+};
+
+&uart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart4_pins_b>;
+	/delete-property/dmas;
+	/delete-property/dma-names;
+	status = "okay";
+};
+
+&uart7 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart7_pins_a>;
+	uart-has-rtscts;
+	/delete-property/dmas;
+	/delete-property/dma-names;
+	status = "okay";
+};
+
+&usbh_ehci {
+	phys = <&usbphyc_port0>;
+	status = "okay";
+};
+
+&usbh_ohci {
+	phys = <&usbphyc_port0>;
+	status = "okay";
+};
+
+&usbotg_hs {
+	pinctrl-0 = <&usbotg_hs_pins_a>;
+	pinctrl-names = "default";
+	phy-names = "usb2-phy";
+	phys = <&usbphyc_port1 0>;
+	status = "okay";
+	vbus-supply = <&vbus_otg>;
+};
+
+&usbphyc {
+	status = "okay";
+};
+
+&usbphyc_port0 {
+	phy-supply = <&vdd_usb>;
+};
+
+&usbphyc_port1 {
+	phy-supply = <&vdd_usb>;
+};
