diff --git a/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts b/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts
index 34ef15eca0b..fab70dc7b7f 100644
--- a/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts
+++ b/target/linux/ramips/dts/mt7628an_mediatek_linkit-smart-7688.dts
@@ -168,8 +168,27 @@
 	nvmem-cell-names = "mac-address";
 };
 
+&pinctrl {
+	ephy-digital;
+
+	sdxc_iot_mode: sdxc_iot_mode {
+		esd {
+			groups = "esd";
+			function = "iot";
+		};
+
+		sdxc {
+			groups = "sdmode";
+			function = "sdxc";
+		};
+	};
+};
+
 &sdhci {
 	status = "okay";
+
+	pinctrl-0 = <&sdxc_iot_mode>;
+	pinctrl-1 = <&sdxc_iot_mode>;
 	cd-inverted;
 };
 
diff --git a/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi b/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
index d279cbcfb8e..2d45e0385f1 100644
--- a/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
+++ b/target/linux/ramips/dts/mt7628an_onion_omega2.dtsi
@@ -170,8 +170,27 @@
 	nvmem-cell-names = "mac-address";
 };
 
+&pinctrl {
+	ephy-digital;
+
+	sdxc_iot_mode: sdxc_iot_mode {
+		esd {
+			groups = "esd";
+			function = "iot";
+		};
+
+		sdxc {
+			groups = "sdmode";
+			function = "sdxc";
+		};
+	};
+};
+
 &sdhci {
 	status = "okay";
+
+	pinctrl-0 = <&sdxc_iot_mode>;
+	pinctrl-1 = <&sdxc_iot_mode>;
 };
 
 &wmac {
diff --git a/target/linux/ramips/dts/mt7628an_ravpower_rp-wd009.dts b/target/linux/ramips/dts/mt7628an_ravpower_rp-wd009.dts
index 607787f68e1..71c77d7ae67 100644
--- a/target/linux/ramips/dts/mt7628an_ravpower_rp-wd009.dts
+++ b/target/linux/ramips/dts/mt7628an_ravpower_rp-wd009.dts
@@ -84,6 +84,22 @@
 	};
 };
 
+&pinctrl {
+	ephy-digital;
+
+	sdxc_iot_mode: sdxc_iot_mode {
+		esd {
+			groups = "esd";
+			function = "iot";
+		};
+
+		sdxc {
+			groups = "sdmode";
+			function = "sdxc";
+		};
+	};
+};
+
 &state_default {
 	gpio {
 		groups = "uart1", "wled_an", "p0led_an", "p2led_an", "p3led_an",
@@ -94,6 +110,9 @@
 
 &sdhci {
 	status = "okay";
+
+	pinctrl-0 = <&sdxc_iot_mode>;
+	pinctrl-1 = <&sdxc_iot_mode>;
 };
 
 &i2c {
diff --git a/target/linux/ramips/dts/mt7628an_vocore_vocore2.dtsi b/target/linux/ramips/dts/mt7628an_vocore_vocore2.dtsi
index 4982d8bccc9..da2026ec7d3 100644
--- a/target/linux/ramips/dts/mt7628an_vocore_vocore2.dtsi
+++ b/target/linux/ramips/dts/mt7628an_vocore_vocore2.dtsi
@@ -68,6 +68,22 @@
 	};
 };
 
+&pinctrl {
+	ephy-digital;
+
+	sdxc_iot_mode: sdxc_iot_mode {
+		esd {
+			groups = "esd";
+			function = "iot";
+		};
+
+		sdxc {
+			groups = "sdmode";
+			function = "sdxc";
+		};
+	};
+};
+
 &state_default {
 	gpio {
 		groups = "wled_an", "refclk", "wdt";
@@ -75,6 +91,13 @@
 	};
 };
 
+&sdhci {
+	status = "okay";
+
+	pinctrl-0 = <&sdxc_iot_mode>;
+	pinctrl-1 = <&sdxc_iot_mode>;
+};
+
 &wmac {
 	status = "okay";