diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
index 025fbafd0e15ca..a83a1dc711c12f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
@@ -253,6 +253,30 @@
 		};
 	};
 
+	vcc_4g_5v: vcc-4g-5v {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio1 RK_PC7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc_4g_5v_en>;
+		regulator-name = "vcc_4g_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc_4g: vcc-4g {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio4 RK_PC7 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc_4g_en>;
+		regulator-name = "vcc_4g";
+		regulator-min-microvolt = <3800000>;
+		regulator-max-microvolt = <3800000>;
+		vin-supply = <&vcc_sysin>;
+	};
+
 	vcc1v8_codec: vcc1v8-codec-regulator {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -937,6 +961,35 @@
 	};
 };
 
+&uart3 {
+	status = "okay";
+
+	modem {
+		compatible = "quectel,eg25";
+		char-device-name = "modem-power";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&modem_control_pins>;
+
+		power-supply = <&vcc_4g>;
+		vbus-supply = <&vcc_4g_5v>;
+
+		enable-gpios = <&gpio0 RK_PB0 GPIO_ACTIVE_HIGH>; // W_DISABLE#
+		reset-gpios = <&gpio3 RK_PB0 GPIO_ACTIVE_HIGH>;
+		status-gpios = <&gpio3 RK_PA6 GPIO_ACTIVE_HIGH>;
+		pwrkey-gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
+
+		host-ready-gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>; // apready
+		wakeup-gpios = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>; // ri
+
+		dtr-gpios = <&gpio0 RK_PA3 GPIO_ACTIVE_HIGH>;
+		cts-gpios = <&gpio3 RK_PC0 GPIO_ACTIVE_HIGH>;
+		rts-gpios = <&gpio3 RK_PC1 GPIO_ACTIVE_HIGH>;
+
+		quectel,qdai = "3,0,0,4,0,0,1,1";
+	};
+};
+
 &pmu_io_domains {
 	pmu1830-supply = <&vcc_1v8>;
 	status = "okay";
@@ -997,6 +1050,29 @@
 		};
 	};
 
+	modem {
+		vcc_4g_5v_en: vcc-4g-5v-en-pin {
+			rockchip,pins = <1 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		vcc_4g_en: vcc-4g-en-pin {
+			rockchip,pins = <4 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		modem_control_pins: modem-control-pins {
+			rockchip,pins =
+				<0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>,
+				<3 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>,
+				<3 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>,
+				<0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>,
+				<0 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>,
+				<0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>,
+				<0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>,
+				<3 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>,
+				<3 RK_PC1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	pmic {
 		pmic_int_l: pmic-int-l {
 			rockchip,pins = <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_up>;