diff --git a/target/linux/ramips/dts/mt7621_mikrotik_rbm11g.dts b/target/linux/ramips/dts/mt7621_mikrotik_rbm11g.dts
index 60b6395..d24b805 100644
--- a/target/linux/ramips/dts/mt7621_mikrotik_rbm11g.dts
+++ b/target/linux/ramips/dts/mt7621_mikrotik_rbm11g.dts
@@ -64,17 +64,25 @@
 		};
 	};
 
-	pcie0_vcc_reg {
+	pcie0_vcc_reg: pcie0_vcc_reg {
 		compatible = "regulator-fixed";
 		regulator-name = "pcie0_vcc";
-
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 		regulator-boot-on;
-		regulator-always-on;
 	};
+
+	card-power-switch {
+		compatible = "reg-userspace-consumer";
+		regulator-name ="card-power-switch";
+		regulator-boot-on;
+		regulator-supplies = "vcc";
+		vcc-supply = <&pcie0_vcc_reg>;
+		comment = "pcie slot vcc switch";
+	};
+
 };
 
 &spi0 {
diff --git a/target/linux/ramips/mt7621/config-4.14 b/target/linux/ramips/mt7621/config-4.14
index 2ae6afb..82c7aaf 100644
--- a/target/linux/ramips/mt7621/config-4.14
+++ b/target/linux/ramips/mt7621/config-4.14
@@ -252,6 +252,7 @@ CONFIG_REGMAP_I2C=y
 CONFIG_REGMAP_SPI=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_USERSPACE_CONSUMER=y
 CONFIG_RESET_CONTROLLER=y
 CONFIG_RFS_ACCEL=y
 CONFIG_RPS=y
diff --git a/target/linux/ramips/patches-4.14/9998-userspace-regulator.patch b/target/linux/ramips/patches-4.14/9998-userspace-regulator.patch
new file mode 100644
index 0000000..86d7410
--- /dev/null
+++ b/target/linux/ramips/patches-4.14/9998-userspace-regulator.patch
@@ -0,0 +1,85 @@
+diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c
+index 765acc1..91d50a2 100644
+--- a/drivers/regulator/userspace-consumer.c
++++ b/drivers/regulator/userspace-consumer.c
+@@ -23,6 +23,7 @@
+ #include <linux/regulator/consumer.h>
+ #include <linux/regulator/userspace-consumer.h>
+ #include <linux/slab.h>
++#include <linux/of.h>
+ 
+ struct userspace_consumer_data {
+ 	const char *name;
+@@ -105,6 +106,41 @@ static const struct attribute_group attr_group = {
+ 	.attrs	= attributes,
+ };
+ 
++static struct regulator_userspace_consumer_data *get_pdata_from_dt_node(
++		struct platform_device *pdev)
++{
++	struct regulator_userspace_consumer_data *pdata;
++	struct device_node *np = pdev->dev.of_node;
++	struct property *prop;
++	const char *supply;
++	int num_supplies;
++	int count = 0;
++
++	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
++	if (!pdata)
++		return ERR_PTR(-ENOMEM);
++
++	pdata->name = of_get_property(np, "regulator-name", NULL);
++	pdata->init_on = of_property_read_bool(np, "regulator-boot-on");
++
++	num_supplies = of_property_count_strings(np, "regulator-supplies");
++	if (num_supplies < 0) {
++		dev_err(&pdev->dev,
++			"could not parse property regulator-supplies\n");
++		return ERR_PTR(-EINVAL);
++	}
++	pdata->num_supplies = num_supplies;
++	pdata->supplies = devm_kzalloc(&pdev->dev, num_supplies *
++				sizeof(*pdata->supplies), GFP_KERNEL);
++	if (!pdata->supplies)
++		return ERR_PTR(-ENOMEM);
++
++	of_property_for_each_string(np, "regulator-supplies", prop, supply)
++		pdata->supplies[count++].supply = supply;
++
++	return pdata;
++}
++
+ static int regulator_userspace_consumer_probe(struct platform_device *pdev)
+ {
+ 	struct regulator_userspace_consumer_data *pdata;
+@@ -112,6 +148,11 @@ static int regulator_userspace_consumer_probe(struct platform_device *pdev)
+ 	int ret;
+ 
+ 	pdata = dev_get_platdata(&pdev->dev);
++	if (!pdata && pdev->dev.of_node) {
++		pdata = get_pdata_from_dt_node(pdev);
++		if (IS_ERR(pdata))
++			return PTR_ERR(pdata);
++	}
+ 	if (!pdata)
+ 		return -EINVAL;
+ 
+@@ -171,11 +212,18 @@ static int regulator_userspace_consumer_remove(struct platform_device *pdev)
+ 	return 0;
+ }
+ 
++static const struct of_device_id regulator_userspace_consumer_of_match[] = {
++	{ .compatible = "reg-userspace-consumer", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, regulator_userspace_consumer_of_match);
++
+ static struct platform_driver regulator_userspace_consumer_driver = {
+ 	.probe		= regulator_userspace_consumer_probe,
+ 	.remove		= regulator_userspace_consumer_remove,
+ 	.driver		= {
+ 		.name		= "reg-userspace-consumer",
++		.of_match_table = regulator_userspace_consumer_of_match,
+ 	},
+ };
+