REGULATOR_LINEAR_RANGE(2300000, 63, 63, 0),
 };
 
-static struct regulator_ops rk809_buck5_ops_range = {
+static const struct regulator_ops rk809_buck5_ops_range = {
        .list_voltage           = regulator_list_voltage_linear_range,
        .map_voltage            = regulator_map_voltage_linear_range,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .set_suspend_disable    = rk817_set_suspend_disable,
 };
 
-static struct regulator_ops rk817_reg_ops = {
+static const struct regulator_ops rk817_reg_ops = {
        .list_voltage           = regulator_list_voltage_linear,
        .map_voltage            = regulator_map_voltage_linear,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .set_suspend_disable    = rk817_set_suspend_disable,
 };
 
-static struct regulator_ops rk817_boost_ops = {
+static const struct regulator_ops rk817_boost_ops = {
        .list_voltage           = regulator_list_voltage_linear,
        .map_voltage            = regulator_map_voltage_linear,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .set_suspend_disable    = rk817_set_suspend_disable,
 };
 
-static struct regulator_ops rk817_buck_ops_range = {
+static const struct regulator_ops rk817_buck_ops_range = {
        .list_voltage           = regulator_list_voltage_linear_range,
        .map_voltage            = regulator_map_voltage_linear_range,
        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
        .set_suspend_disable    = rk817_set_suspend_disable,
 };
 
-static struct regulator_ops rk817_switch_ops = {
+static const struct regulator_ops rk817_switch_ops = {
        .enable                 = regulator_enable_regmap,
        .disable                = regulator_disable_regmap,
        .is_enabled             = rk8xx_is_enabled_wmsk_regmap,