diff --git a/arch/arm64/boot/dts/renesas/r9a09g057h44-gp-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g057h44-gp-evk.dts
index 593c48181248..11c13c85d278 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g057h44-gp-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g057h44-gp-evk.dts
@@ -7,6 +7,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+#include <dt-bindings/gpio/gpio.h>
 #include "r9a09g057.dtsi"
 
 / {
@@ -14,6 +16,14 @@ / {
 	compatible = "renesas,gp-evk", "renesas,r9a09g057h44", "renesas,r9a09g057";
 
 	aliases {
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2c2 = &i2c2;
+		i2c3 = &i2c3;
+		i2c6 = &i2c6;
+		i2c7 = &i2c7;
+		i2c8 = &i2c8;
+		mmc1 = &sdhi1;
 		serial0 = &scif;
 	};
 
@@ -32,17 +42,186 @@ memory@240000000 {
 		device_type = "memory";
 		reg = <0x2 0x40000000 0x2 0x00000000>;
 	};
+
+	reg_3p3v: regulator1 {
+		compatible = "regulator-fixed";
+
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	vqmmc_sdhi1: regulator-vccq-sdhi1 {
+		compatible = "regulator-gpio";
+		regulator-name = "SDHI1 VccQ";
+		gpios = <&pinctrl RZG2L_GPIO(10, 2) GPIO_ACTIVE_HIGH>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		gpios-states = <0>;
+		states = <3300000 0>, <1800000 1>;
+	};
 };
 
 &audio_extal_clk {
 	clock-frequency = <22579200>;
 };
 
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c2 {
+	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c3 {
+	pinctrl-0 = <&i2c3_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c6 {
+	pinctrl-0 = <&i2c6_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c7 {
+	pinctrl-0 = <&i2c7_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&i2c8 {
+	pinctrl-0 = <&i2c8_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&ostm0 {
+	status = "okay";
+};
+
+&ostm1 {
+	status = "okay";
+};
+
+&ostm2 {
+	status = "okay";
+};
+
+&ostm3 {
+	status = "okay";
+};
+
+&ostm4 {
+	status = "okay";
+};
+
+&ostm5 {
+	status = "okay";
+};
+
+&ostm6 {
+	status = "okay";
+};
+
+&ostm7 {
+	status = "okay";
+};
+
 &pinctrl {
+	i2c0_pins: i2c0 {
+		pinmux = <RZG2L_PORT_PINMUX(3, 0, 1)>, /* I2C0_SDA */
+			 <RZG2L_PORT_PINMUX(3, 1, 1)>; /* I2C0_SCL */
+	};
+
+	i2c1_pins: i2c1 {
+		pinmux = <RZG2L_PORT_PINMUX(3, 2, 1)>, /* I2C1_SDA */
+			 <RZG2L_PORT_PINMUX(3, 3, 1)>; /* I2C1_SCL */
+	};
+
+	i2c2_pins: i2c2 {
+		pinmux = <RZG2L_PORT_PINMUX(2, 0, 4)>, /* I2C2_SDA */
+			 <RZG2L_PORT_PINMUX(2, 1, 4)>; /* I2C2_SCL */
+	};
+
+	i2c3_pins: i2c3 {
+		pinmux = <RZG2L_PORT_PINMUX(3, 6, 1)>, /* I2C3_SDA */
+			 <RZG2L_PORT_PINMUX(3, 7, 1)>; /* I2C3_SCL */
+	};
+
+	i2c6_pins: i2c6 {
+		pinmux = <RZG2L_PORT_PINMUX(4, 4, 1)>, /* I2C6_SDA */
+			 <RZG2L_PORT_PINMUX(4, 5, 1)>; /* I2C6_SCL */
+	};
+
+	i2c7_pins: i2c7 {
+		pinmux = <RZG2L_PORT_PINMUX(4, 6, 1)>, /* I2C7_SDA */
+			 <RZG2L_PORT_PINMUX(4, 7, 1)>; /* I2C7_SCL */
+	};
+
+	i2c8_pins: i2c8 {
+		pinmux = <RZG2L_PORT_PINMUX(0, 6, 1)>, /* I2C8_SDA */
+			 <RZG2L_PORT_PINMUX(0, 7, 1)>; /* I2C8_SCL */
+	};
+
 	scif_pins: scif {
 		pins = "SCIF_TXD", "SCIF_RXD";
 		renesas,output-impedance = <1>;
 	};
+
+	sd1-pwr-en-hog {
+		gpio-hog;
+		gpios = <RZG2L_GPIO(10, 3) GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "sd1_pwr_en";
+	};
+
+	sdhi1_pins: sd1 {
+		sd1_data {
+			pins = "SD1DAT0", "SD1DAT1", "SD1DAT2", "SD1DAT3";
+			input-enable;
+			renesas,output-impedance = <3>;
+			slew-rate = <1>;
+		};
+
+		sd1_cmd {
+			pins = "SD1CMD";
+			input-enable;
+			renesas,output-impedance = <3>;
+			slew-rate = <1>;
+		};
+
+		sd1_clk {
+			pins = "SD1CLK";
+			renesas,output-impedance = <3>;
+			slew-rate = <1>;
+		};
+
+		sd1_cd {
+			pinmux = <RZG2L_PORT_PINMUX(9, 4, 14)>; /* SD1_CD */
+		};
+	};
 };
 
 &qextal_clk {
@@ -59,3 +238,15 @@ &scif {
 
 	status = "okay";
 };
+
+&sdhi1 {
+	pinctrl-0 = <&sdhi1_pins>;
+	pinctrl-1 = <&sdhi1_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&vqmmc_sdhi1>;
+	bus-width = <4>;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	status = "okay";
+};
