diff --git a/drivers/pinctrl/rockchip/pinctrl-rv1108.c b/drivers/pinctrl/rockchip/pinctrl-rv1108.c
index f4a09a6..c28b504 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rv1108.c
+++ b/drivers/pinctrl/rockchip/pinctrl-rv1108.c
@@ -75,6 +75,33 @@
 	},
 };
 
+static int rv1108_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
+{
+	struct rockchip_pinctrl_priv *priv = bank->priv;
+	int iomux_num = (pin / 8);
+	struct regmap *regmap;
+	int reg, ret, mask, mux_type;
+	u8 bit;
+	u32 data;
+
+	regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
+				? priv->regmap_pmu : priv->regmap_base;
+
+	/* get basic quadrupel of mux registers and the correct reg inside */
+	mux_type = bank->iomux[iomux_num].type;
+	reg = bank->iomux[iomux_num].offset;
+	reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask);
+
+	if (bank->recalced_mask & BIT(pin))
+		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
+
+	data = (mask << (bit + 16));
+	data |= (mux & mask) << bit;
+	ret = regmap_write(regmap, reg, data);
+
+	return ret;
+}
+
 #define RV1108_PULL_PMU_OFFSET		0x10
 #define RV1108_PULL_OFFSET		0x110
 
@@ -177,6 +204,7 @@
 	.pmu_mux_offset		= 0x0,
 	.iomux_recalced		= rv1108_mux_recalced_data,
 	.niomux_recalced	= ARRAY_SIZE(rv1108_mux_recalced_data),
+	.set_mux		= rv1108_set_mux,
 	.pull_calc_reg		= rv1108_calc_pull_reg_and_bit,
 	.drv_calc_reg		= rv1108_calc_drv_reg_and_bit,
 	.schmitt_calc_reg	= rv1108_calc_schmitt_reg_and_bit,