This can be achieved by the register opcode Set SNK PDO (0x3F). The default SNK PDOs of MAX77958 are 5V/3A, 9V/3A and 15V/3A. After plugging in the travel adapter, device will select the highest power among the three PDOs. You can remove the 15V/3A option and change it based on your system requirement to make sure the VBUS voltage stays below 12V.