diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index fff5bc4faa2c99aa9b9e0c225fc35372129aacc3..512c936ae021eb8a7e1412af6383574a086d009e 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -130,6 +130,7 @@ static struct regulator_ops bd718xx_buck_regulator_nolinear_ops = {
 	.disable = regulator_disable_regmap,
 	.is_enabled = regulator_is_enabled_regmap,
 	.list_voltage = regulator_list_voltage_table,
+	.map_voltage = regulator_map_voltage_ascend,
 	.set_voltage_sel = bd718xx_set_voltage_sel_restricted,
 	.get_voltage_sel = regulator_get_voltage_sel_regmap,
 	.set_voltage_time_sel = regulator_set_voltage_time_sel,