.ops            = &axp20x_ops_range,                            \
        }
 
-static struct regulator_ops axp20x_ops_fixed = {
+static const struct regulator_ops axp20x_ops_fixed = {
        .list_voltage           = regulator_list_voltage_linear,
 };
 
-static struct regulator_ops axp20x_ops_range = {
+static const struct regulator_ops axp20x_ops_range = {
        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .list_voltage           = regulator_list_voltage_linear_range,
        .is_enabled             = regulator_is_enabled_regmap,
 };
 
-static struct regulator_ops axp20x_ops = {
+static const struct regulator_ops axp20x_ops = {
        .set_voltage_sel        = regulator_set_voltage_sel_regmap,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .list_voltage           = regulator_list_voltage_linear,
        .is_enabled             = regulator_is_enabled_regmap,
 };
 
-static struct regulator_ops axp20x_ops_sw = {
+static const struct regulator_ops axp20x_ops_sw = {
        .enable                 = regulator_enable_regmap,
        .disable                = regulator_disable_regmap,
        .is_enabled             = regulator_is_enabled_regmap,