diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index d59644e50f14..2f0ea4f43bf5 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -330,8 +330,13 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
 	if (muxc->dev->of_node) {
 		struct device_node *dev_node = muxc->dev->of_node;
 		struct device_node *mux_node, *child = NULL;
+		u32 base_nr = 0;
 		u32 reg;
 
+		of_property_read_u32(dev_node, "base-nr", &base_nr);
+		if (!force_nr && base_nr)
+			force_nr = base_nr + chan_id;
+
 		if (muxc->arbitrator)
 			mux_node = of_get_child_by_name(dev_node, "i2c-arb");
 		else if (muxc->gate)