void *dvs;
 };
 
-/* BUCK 1 ~ 4 voltage table */
-static const int lp8788_buck_vtbl[] = {
-        500000,  800000,  850000,  900000,  950000, 1000000, 1050000, 1100000,
-       1150000, 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000,
-       1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000,
-       1950000, 2000000,
+/* BUCK 1 ~ 4 voltage ranges */
+static const struct regulator_linear_range buck_volt_ranges[] = {
+       REGULATOR_LINEAR_RANGE(500000, 0, 0, 0),
+       REGULATOR_LINEAR_RANGE(800000, 1, 25, 50000),
 };
 
 static void lp8788_buck1_set_dvs(struct lp8788_buck *buck)
 }
 
 static const struct regulator_ops lp8788_buck12_ops = {
-       .list_voltage = regulator_list_voltage_table,
-       .map_voltage = regulator_map_voltage_ascend,
+       .list_voltage = regulator_list_voltage_linear_range,
+       .map_voltage = regulator_map_voltage_linear_range,
        .set_voltage_sel = lp8788_buck12_set_voltage_sel,
        .get_voltage_sel = lp8788_buck12_get_voltage_sel,
        .enable = regulator_enable_regmap,
 };
 
 static const struct regulator_ops lp8788_buck34_ops = {
-       .list_voltage = regulator_list_voltage_table,
-       .map_voltage = regulator_map_voltage_ascend,
+       .list_voltage = regulator_list_voltage_linear_range,
+       .map_voltage = regulator_map_voltage_linear_range,
        .set_voltage_sel = regulator_set_voltage_sel_regmap,
        .get_voltage_sel = regulator_get_voltage_sel_regmap,
        .enable = regulator_enable_regmap,
                .name = "buck1",
                .id = BUCK1,
                .ops = &lp8788_buck12_ops,
-               .n_voltages = ARRAY_SIZE(lp8788_buck_vtbl),
-               .volt_table = lp8788_buck_vtbl,
+               .n_voltages = 26,
+               .linear_ranges = buck_volt_ranges,
+               .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges),
                .type = REGULATOR_VOLTAGE,
                .owner = THIS_MODULE,
                .enable_reg = LP8788_EN_BUCK,
                .name = "buck2",
                .id = BUCK2,
                .ops = &lp8788_buck12_ops,
-               .n_voltages = ARRAY_SIZE(lp8788_buck_vtbl),
-               .volt_table = lp8788_buck_vtbl,
+               .n_voltages = 26,
+               .linear_ranges = buck_volt_ranges,
+               .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges),
                .type = REGULATOR_VOLTAGE,
                .owner = THIS_MODULE,
                .enable_reg = LP8788_EN_BUCK,
                .name = "buck3",
                .id = BUCK3,
                .ops = &lp8788_buck34_ops,
-               .n_voltages = ARRAY_SIZE(lp8788_buck_vtbl),
-               .volt_table = lp8788_buck_vtbl,
+               .n_voltages = 26,
+               .linear_ranges = buck_volt_ranges,
+               .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges),
                .type = REGULATOR_VOLTAGE,
                .owner = THIS_MODULE,
                .vsel_reg = LP8788_BUCK3_VOUT,
                .name = "buck4",
                .id = BUCK4,
                .ops = &lp8788_buck34_ops,
-               .n_voltages = ARRAY_SIZE(lp8788_buck_vtbl),
-               .volt_table = lp8788_buck_vtbl,
+               .n_voltages = 26,
+               .linear_ranges = buck_volt_ranges,
+               .n_linear_ranges = ARRAY_SIZE(buck_volt_ranges),
                .type = REGULATOR_VOLTAGE,
                .owner = THIS_MODULE,
                .vsel_reg = LP8788_BUCK4_VOUT,