diff --git a/arch/arm/dts/r8a77990-ebisu.dts b/arch/arm/dts/r8a77990-ebisu.dts
index 1946999..8b0d24b 100644
--- a/arch/arm/dts/r8a77990-ebisu.dts
+++ b/arch/arm/dts/r8a77990-ebisu.dts
@@ -28,6 +28,24 @@
 		/* first 128MB is reserved for secure area. */
 		reg = <0x0 0x48000000 0x0 0x38000000>;
 	};
+
+	reg_1p8v: regulator0 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	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;
+	};
 };
 
 &avb {
@@ -71,6 +89,18 @@
 		groups = "scif_clk_a";
 		function = "scif_clk";
 	};
+
+	sdhi3_pins: sd2 {
+		groups = "sdhi3_data8", "sdhi3_ctrl";
+		function = "sdhi3";
+		power-source = <1800>;
+	};
+
+	sdhi3_pins_uhs: sd2_uhs {
+		groups = "sdhi3_data8", "sdhi3_ctrl";
+		function = "sdhi3";
+		power-source = <1800>;
+	};
 };
 
 &sdhi0 {
@@ -82,7 +112,15 @@
 };
 
 &sdhi3 {
+	/* used for on-board 8bit eMMC */
+	pinctrl-0 = <&sdhi3_pins>;
+	pinctrl-1 = <&sdhi3_pins_uhs>;
+	pinctrl-names = "default", "state_uhs";
+
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
 	bus-width = <8>;
+	mmc-hs200-1_8v;
 	non-removable;
 	status = "okay";
 };